PRO ELITE - Performance Wholesale

TECHNICAL ASSISTANCE is available through a variety of sources:

Toll Free: 1.877.776.4323Local: 901.259.1134Website: www.racingheadservice.comEmail: [email protected] Hour Fax: 901.368.1951

Technical and Sales Personnel are available from 8:00 a.m. to 5:00 p.m. CST, Monday through Friday. RHS® is closed on weekends and legal holidays.

PRO ELITE™

CNC-PORTED CYLINDER HEADSpage 13, 15 & 19

New Products

LS RACE BLOCKpage 2-4

CYLINDER HEADASSEMBLY KITSpage 20

PRO ACTION™ 360 XSMALL BLOCK CHRYSLER

CYLINDER HEADSpage 16

ULTRA PRO MAGNUM™

ROCKER ARMSpage 24

Cylinder Head FAQs ...................................... 33

Cylinder Head Specs & Related Parts Guide .................................. 35

Corporate Warranty Policy ................................................... 44 About RHS® ......................................................... 45

RESOURCES

Engine Blocks LS Race Block ............................................................ 2

Cylinder Heads The RHS® Difference ................................................... 5 Series Explained ......................................................... 6

GM VORTEC Pro Torker™ Vortec ...................................................... 7

SMALL BLOCK CHEVY Pro Torker™ 23˚ ........................................................... 8 Pro Action™ 23˚ ........................................................... 9 Pro Action™ 23˚ Style Raised Runner ........................ 11 Pro Action™ 14˚ ......................................................... 12 Pro Elite™ 23˚ CNC-Ported ........................................ 13

BIG BLOCK CHEVY Pro Action™ 24˚ ......................................................... 14 Pro Elite™ 24˚ CNC-Ported ........................................ 15

SMALL BLOCK CHRYSLER Pro Action™ 360-X ..................................................... 16

SMALL BLOCK FORD Pro Action™ 20˚ ......................................................... 17 Pro Elite™ 20˚ ............................................................. 19

Parts Kits Cylinder Head Assembly Kits .................................... 20 Stud Kits ................................................................... 20

Valve Train Guide Plates ............................................................. 21 Polylocks .................................................................. 21 Pushrods ................................................................... 22 Rocker Arms ............................................................. 24 Rocker Studs ............................................................ 26 Stud Girdles .............................................................. 26 Valves ........................................................................ 27

Gaskets Intake ........................................................................ 28 Exhaust ..................................................................... 28 Valve Cover ............................................................... 28

Spark Plugs Champion ................................................................. 29 ZEX™ .......................................................................... 29

Intake Manifolds LSXR

™ 102mm Intake Manifold ................................. 30 Big Mouth 102mm Throttle Body™ ............................ 30

Tools Cylinder Head Tools .................................................. 31 Engine Block Tools .................................................... 31 Pushrod Tools ........................................................... 31 Abrasives .................................................................. 31 Simulation Software .................................................. 31

Merchandise Apparel ...................................................................... 32 Banners / Decals ....................................................... 32

Over the past few years, LS engine technology has revolu-tionized the GM performance aftermarket. Gen IV engines have set a new standard for factory horsepower and torque. To meet the growing demand of today’s high performance engine builders and racing enthusiasts, engineers at RHS® have recently designed an all-new LS engine block for rad-ical street and all-out racing applications.

Going beyond the limitations of other GM LS blocks, the LS Race Block is available in both standard (9.240") and tall (9.750") deck height combinations and is engineered for maximum clearance around a 4.600" stroke crankshaft. This was done by raising the camshaft centerline (.388"/9.86mm) and including priority main oiling that shifts the oil galley out-board. With this unique design, RHS® engineers were also able to minimize windage in the rotating assembly – leading to superior engine lubrica-tion at higher rpm.

To make it friendly for exist-ing race applications, the block contains both factory and motor plate race mounts for Gen I, Gen II, Gen III and Gen IV engines. And for quality control assurance, RHS® conducts a CT scan (similar to a medical CAT scan) on each block to ensure maximum precision and consistency. Combine that with more standard features than any block on the market and you get the new benchmark of LS pow-er, strength and compatibility.

LSRACE

BLOCK

Welcome to the LS revolution.

• Designed from aircraft-quality A357-T6 aluminum

• Siamese cast bore walls (4.125" or 4.165" diameter) with press-in cast iron sleeves

• Available in standard (9.240") & tall (9.750") deck heights with beefy deck thickness (.500" stan-dard/.750" tall deck); standard (5.87") & tall (6.38") deck cylinder sleeves available

• 6 head bolt design with full water jacket around the cylinders walls; large windows in the valley allow ac-cess to an inboard 6th head bolt

• Block design includes large front & rear AN-12 side feeds for serious dry sump setups

• Material for oversized lifters (accepts 1.060" bushing for keyed lifters) with lifter bosses that are designed to clear tie bar style lifters

STANDARD FEATURES

• Race Mounts

• Accommodates Up To A 60mm

Camshaft

• Full Water Jacket Around Cylinders

• Chilled Main Bearing

Bulkheads

in the rotating assembly – leading cac -

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ory nnnttttnnnn s nnnnnndnn

• Priority main oiling – galley moved outboard to accommodate up to 4.600” stroke with standard rod pins (2.100”diameter) & oversized 60mm camshaft

• Raised cam centerline (.388”/9.86mm); 2 extra links in timing chain – Timing sets available from COMP Cams®

• Bay-to-bay breathing improved with larger side window area & increased windage passage under bores & around caps

RACE-INSPIRED DESIGN

• Dry Sump Friendly Front &

Rear AN-12 Fittings

• 4.125"-4.165" Press-In Spun Cast Iron Liners

With Siamese Parent Bore

• Gen IV Knock Sensor Compatible

• Gen I & III Mounts

*GO TO WWW.RACINGHEADSERVICE.COM/LSBLOCK FOR AN IN-DEPTH LOOK AT THIS REVOLUTIONARY DESIGN

3

• Priority main oiling – galley moved outboard to accommodate up to 4.600" stroke with standard rod pins (2.100" diameter) & oversized 60mm camshaft

• Raised cam centerline (.388"/9.86mm); 2 extra links in timing chain – timing sets available from COMP Cams®

• Bay-to-bay breathing improved with larger side window area & increased windage passage under bores & around caps

RACE-INSPIRED DESIGN

• Dry Sump Friendly Front &

Rear AN-12 Fittings

• 4.125"-4.165" Press-In Spun Cast Iron

Liners With Siamese Parent Bore

• Gen IV Knock Sensor Compatible

• Gen I (Traditional SBC)

& III Mounts

*GO TO WWW.RACINGHEADSERVICE.COM/LSBLOCK FOR AN IN-DEPTH LOOK AT THIS REVOLUTIONARY DESIGN

3W W W . R A C I N G H E A D S E R V I C E . C O M • 1 . 8 7 7 . 7 7 6 . 4 3 2 3

See Pg. 4 For Block Part #’s & Related Components

Part # Description Deck Height Bore Width Cylinder SleeveLength

FINISHED54900 LS Aluminum Race Block Tall (9.750") 4.165" 6.38"

54901 LS Aluminum Race Block Tall (9.750") 4.125" 6.38"

54902 LS Aluminum Race Block Standard (9.240") 4.165" 5.87"

54903 LS Aluminum Race Block Standard (9.240") 4.125" 5.87"

UNFINISHED54900U LS Aluminum Race Block Tall (9.760") 4.160" 6.38"

54901U LS Aluminum Race Block Tall (9.760") 4.120" 6.38"

54902U LS Aluminum Race Block Standard (9.250") 4.160" 5.87"

54903U LS Aluminum Race Block Standard (9.250") 4.120" 5.87"

* Unfi nished blocks feature a .010” thicker deck and .005” smaller bore size for custom machining operations.

APPLICATION CHART

LS Race Blockcont’d.

4

Service Items

APPLICATION CHART

Part # Description

HARD PARTS3154 Timing Chain Set*

3173KT Adjustable Timing Chain Set*

549100-1 8620 Billet Main Cap*

549101 Rear Seal Cover*

549102 Brass Cam Thrust Plate 6 bolts*

549103-1 4.125 Short Deck Sleeve

549104-1 4.125 Tall Deck Sleeve

549105-1 3.900 Short Deck Sleeve

FASTENERS549300-1 Main Cap Stud, Long

549301-1 Main Cap Stud, Short

549302-1 Main Cap Side Bolt

549303-1 Main Cap 12pt Nut

549304-1 Main Cap Washer

549305-1 Main Cap Side Washer

HARDWARE549200-1 Aluminum -12AN Port Plug

549201-1 Main Cap Dowel Pin

549202-1 Cam Bearings

549203-1 O-Ring For -12 Port Plug

549204-1 O-Ring For Thrust Plate

549205-1 Block-To-Transmission Dowel Pin

ENGINE BLOCK TOOLS549106 LS Engine Main Cap Puller

* Required For RHS® Block Applications

Custom options such as oversized cam journals & super tall decks height are

also available.

Call for details & lead time.

NEED A ROTATING ASSEMBLY?

Our RACING HEAD HELP™ line can give you the ideal bottom-end solution for your LS

Race Block application.

With the latest CAD technology, state-of-the-art engineering

and close-tolerance machining, you get race-proven airfl ow

technology in each cylinder head series.

Each new series of RHS® cylinder heads must go through an

extensive regimen of engine dyno and fl owbench testing.

With the industry’s largest and most profi cient team of

airfl ow engineers, RHS® constantly explores new develop-

ments to stay at the forefront of automotive technology.

• Premium bronze valve guides

• Modified water jacket dimensions for cooler operation

• Multi-angle Serdi valve job• Clean Cast Technology™ for smoother,

less restricted airflow

• CNC-machined for screw-in studs

Standard Features

5

The internal combustion engine is often considered to be a large air pump. As the part of the engine where airfl ow is most critical, the cylinder head is key to the performance of an engine. The shape of the combustion chamber, intake ports and passages (and to a less-er extent the exhaust) determines a major portion of the volumetric effi ciency and power output of the engine. And nobody designs and engineers more power-effi cient cylinder heads than RHS®.

Since 1967, Racing Head Service® has been a premiere name in cylinder head performance. A member of the COMP Performance Group™, RHS® produces a wide variety of cylinder heads from stock replacement to hardcore racing, all to maximize the perfor-mance of each unique engine application. The industry’s largest and most capable engineering team works hand-in-hand with the most sophisticated airfl ow technology in the aftermarket to pro-duce the best possible products.

A company founded by racers, RHS® understands the importance of cylinder head horsepower. Using advanced CAD software, ex-clusive production methods and joint R&D efforts with valve train engineers at COMP Cams®, RHS® is able to develop the most in-novative cylinder heads seen in the aftermarket. And with more standard features than any cylinder head in the aftermarket, our cylinder heads are guaranteed to improve your performance – right out of the box!

CylinderHeads

Power By Design... Not Just A Slogan,It’s The Foundation Of Everything We Do

Cylinder Head SeriesExplained

6

Pro Torker™ (Cast Iron) The RHS® Pro Torker™ series of cast iron cylinder heads is designed specifi cally for stock re-placement and mild street performance applications. These heads utilize the exclusive Clean Cast Technology™ and the industry’s tightest machining tolerances for enhanced performance, exact component fi t and maximum durability.

• Cast iron core material for maximum consistency & durability • Clean Cast Technology™ delivers enhanced airfl ow & performance

Pro Action™ (Cast Iron & Aluminum)Pro Action™ Cylinder Heads, the cornerstone of the RHS®

line, are ideal for a variety of performance applications, in-cluding hot rods, drag racing, oval track racing and marine. Available in aluminum or cast iron, Pro Action™ heads de-liver more features, higher fl ow characteristics and better fi nish quality than other competitive brands.

• Available in cast iron & aluminum with a wide vari-ety of runner & chamber sizes

• Enhanced features & superior quality out-perform the competition right out of the box

Pro Elite™

(Cast Iron & Aluminum)The RHS® Pro Elite™ series of CNC-ported cylinder heads is designed for absolute max-imum engine performance. Utilizing innova-tive design features, modern engineering methods & precision CNC machining, Pro Elite™ Cylinder Heads are second-to-none.

• Innovative cast iron & aluminum de-signs w/ race-inspired features

• Delivers maximum airfl ow for re-markable performance gains

Application: Stock replacement & mild street performance applications

Application: Hardcore street, race & powerboat engine applications

Application: Extreme performance & race applications

7

SERIES: PRO TORKER™

DESCRIPTION: 23° Sma l l B lock Chevy Vortec Cylinder Heads; Cast Iron; Straight Plug; Bare Or Fully Assembled; Flat Tappet & Hy-draulic Roller Assemblies Available (#12410); Center-Bolt Valve Cover Provisions

APPLICATION: 327-383c.i. Recommended Street Performance/Iron-Mandated Circle Track Racing Classes

VALVE GUIDES: #12407 Integral Cast Iron,#12410 Premium Bronze Material

SPARK PLUGS: 14mm Thread, .708" Reach, Tapered Seat

ASSEMBLIES INCLUDE: Sta in less Stee l Valves, Valve Springs, Retainers, Valve Locks, Guide Plates, Rocker Studs & Valve Seals

RHS® Uses OnlyPremium Components

Touring auctions and digging through junkyards for a good set of Vortec heads can get old. Pro Torker™ Vortec Heads are designed as a stock re-placement for the popular GM 906 casting but fl ow far better and are much more powerful. RHS® patented Clean Cast Technology™ and close tolerance machining provide exceptional fi nish quality for superior performance and reliability, and the revised water jacket design helps prevent cracking com-monly found in GM 906 factory castings. And when you add up the money you spend repairing and machining factory heads, these heads actually save you money – giving you maximum power for your performance dollar.

• Made from quality cast iron using patented Clean Cast Technology™ for racing classes where iron heads are required

• Standard features include hardened radius exhaust seats, multi-an-gle intake seats & “Fast Burn” combustion chambers

• Equipped with 1.550" valve spring seats & valve guides to avoid re-tainer-to-guide clearance issues when used with high lift camshafts

• Available “as-cast” or assembled (#12410) with COMP Cams® com-ponents; 170cc intake runner sizes & 64cc combustion chambers

ASSEMBLED HEADS

AssembledPart # Material Runners Chambers Spark Plugs

ValvesValve Train Max Lift Bare Head

Part #In. Ex.

GM VORTEC - PRO TORKER™ CYLINDER HEADS, CAST IRON12410-01 Cast Iron 170cc 64cc Straight 2.020" 1.600" Flat Tappet .560" 12410

12410-02 Cast Iron 170cc 64cc Straight 2.020" 1.600" Hyd. Roller .600" 12410

* .100" Long Valve Length

BARE HEADS

Part # Description Runner Chamber Spark PlugsValve Size

ApplicationIn. Ex.

GM VORTEC - PRO TORKER™ CYLINDER HEADS, CAST IRON12407 Pro Torker™ 23º GM Vortec 170cc 64cc Straight 1.940" Stock Length 1.500" Stock Length 327-350c.i.

12410* Pro Torker™ 23º GM Vortec 170cc 64cc Straight 2.020" + .100" Long 1.600" + .100" Long 327-383c.i.

W W W . R A C I N G H E A D S E R V I C E . C O M

PRO TORKER™ VORTECCast Iron Cylinder Heads G

M Vo

rtec

Dual bolt pattern (4 and 6-bolt) allows compatibility with both early-style SBC

and GM Vortec intake manifolds.

8

SERIES: PRO TORKER™

DESCRIPTION: 23° Early-Style SBC Cylin-der Heads; Cast Iron; Straight Plug

APPLICATION: 327-350c.i. Recommended Stock Replacement/Street Performance

VALVE GUIDES: Integral Cast Iron

SPARK PLUGS: 14mm thread, .708" Reach, Tapered Seat

SPECIAL NOTE: #12400 & #12402 Legal For Use In NHRA Super Stock

Designed as a cast iron replacement head for early-style SBC applications, Pro Torker™ Heads deliver impressive gains for stock replacement and mild street performance engines. Clean Cast Technology™ and close tolerance machining are utilized to provide superior fi nish quality for increased per-formance and reliability. Premium cast iron material and a revised water jacket design help prevent cracking commonly found in GM factory cast-ings – making this a popular choice of production engine rebuilders. And for those who wish to modify the engine’s compression, these heads feature an extra-thick deck surface to allow angle milling.

• Designed for early-style Small Block Chevy factory replacement & mild street performance engine applications

• Clean Cast Technology™ & close tolerance machining deliver precise component fi t & reduce airfl ow restriction

• Multi-angle valve job signifi cantly increases airfl ow – right out of the box

• Refi ned water jacket design increases resistance to cracking by re-ducing engine “hot spots”

BARE HEADS


ApplicationIn. Ex.

SMALL BLOCK CHEVY - PRO TORKER™ 23˚ EARLY-STYLE SBC CYLINDER HEADS, CAST IRON12402 Pro Torker™ 23º Early-Style SBC 170cc 67cc Straight 1.940" Stock Length 1.500" Stock Length 327-350c.i.

12403 Pro Torker™ 23º Early-Style SBC 170cc 67cc Straight 2.020" Stock Length 1.600" Stock Length 327-383c.i.



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Custom AssembliesAre Available.

Call For Information.

SERIES: PRO ACTION™

DESCRIPTION: 23° Small Block Chevy Cyl-inder Head; Cast Iron Or Aluminum; Straight Or Angle Plug; Bare Or Fully Assembled; Flat Tap-pet & Hydraulic Roller Assemblies Available

APPLICATION: 262-421c.i. Recommended Street Perf./Drag Racing/Circle Track Racing

VALVE GUIDES: Premium Bronze Material

SPARK PLUGS: Cast Iron: 14mm Thread, .708" Reach, Tapered – Aluminum: 14mm Thread, .750" Reach, Gasketed


RHS® Uses OnlyPremium Components These heads deliver signifi cant gains in both power and torque for all Small

Block Chevrolet applications – right out of the box. Available in aluminum or cast iron, Pro Action™ SBC Heads are the perfect choice for a variety of per-formance engines, including street rod, muscle car, oval track and drag rac-ing applications. Standard features include a multi-angle Serdi valve job and the choice of straight or angle plug confi guration. Valve springs up to 1.550" and all standard rocker arms and valve train components are accepted.

• Advanced port/runner/chamber design & modifi ed water jacket for optimal performance & added reliability

• Standard features include multi-angle intake & radiused exhaust valve seats for up to 5% more airfl ow than the competition

• Select from 180cc, 200cc, 220cc & 235cc intake runner volumes with 50cc, 64cc or 72cc combustion chambers

• Available in aluminum or cast iron; as cast or fully assembled with pre-mium COMP Cams® valve train components

ASSEMBLED HEADS



Part #In. Ex.

SMALL BLOCK CHEVY - PRO ACTION™ 23˚ CYLINDER HEADS, CAST IRON12317-01 Cast Iron 180cc 64cc Straight 2.020" 1.600" Flat Tappet .560" 12317


12318-01 Cast Iron 180cc 64cc Angle 2.020" 1.600" Flat Tappet .560" 12318

12318-02 Cast Iron 180cc 64cc Angle 2.020" 1.600" Hyd. Roller .600" 12318

12301-01 Cast Iron 180cc 72cc Straight 2.020" 1.600" Flat Tappet .560" 12301










9W W W . R A C I N G H E A D S E R V I C E . C O M

* .100” Long Valve Length Small Block Chevy Cylinder Heads - Continued On Pg. 10

PRO ACTION™ 23°Cast Iron Or Aluminum Cylinder Heads

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For Complete Flow Data,See Website.

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ASSEMBLED HEADS



Part #In. Ex.

SMALL BLOCK CHEVY - PRO ACTION™ 23˚ CYLINDER HEADS, CAST IRON12320-01 Cast Iron 200cc 64cc Angle 2.020" 1.600" Flat Tappet .560" 12320


























SMALL BLOCK CHEVY - PRO ACTION™ 23˚ CYLINDER HEADS, ALUMINUM12052-01 Aluminum 180cc 64cc Straight 2.020" 1.600" Flat Tappet .560" 12052

12052-02 Aluminum 180cc 64cc Straight 2.020" 1.600" Hyd. Roller .600" 12052

12053-01 Aluminum 180cc 64cc Angle 2.020" 1.600" Flat Tappet .560" 12053

12053-02 Aluminum 180cc 64cc Angle 2.020" 1.600" Hyd. Roller .600" 12053

12041-01 Aluminum 180cc 72cc Straight 2.020" 1.600" Flat Tappet .560" 12041




























* .100” Long Valve Length

PRO ACTION™ 23° cont’d.Cast Iron Or Aluminum Cylinder Heads



DESCRIPTION: 23° Small Block Chevy Cyl-inder Heads; Cast Iron; Angle Plug

APPLICATION: 350-421c.i. Recommended Iron-Mandated Circle Track & Drag Racing



Designed for circle track and Nostalgia Drags Junior Class B Fuel competi-tion, these cast iron heads have been angle milled from the factory to a 21˚ valve angle, thereby increasing performance potential. This cost saving modifi cation is acceptable with most race sanctioning bodies, who typically allow a two-degree plus or minus valve angle change. The Pro Action™ 23˚ Style Raised Runner Heads are available in three confi gurations, including the standard “as cast” version with 220cc intake runners, raised runner P-Ports with machined seats and guide holes and raised runner P-Ports with-out machined seats or guide holes.

• Ideal cast iron head for circle track & nostalgia drag racing engines

• Angle-milled to 21° valve angle – allowable by most sanctioning rac-ing bodies where original valve angle is required

• P-Port versions allow for custom porting & are available with or with-out machined valve seats & guide holes

• Standard “as cast” version features hardened multi-angle 2.080" in-take & radiused 1.600" exhaust valve seats

BARE HEADS


ApplicationIn. Ex.

SMALL BLOCK CHEVY - PRO ACTION™ 23˚ STYLE RAISED RUNNER CYLINDER HEADS, CAST IRON12801 Pro Action™ 23º Style Raised Runner - As Cast 220cc 64cc Angle 2.125" + .500" Long 1.625" + .500" Long 350-421c.i.

12802Pro Action™ 23º Style Raised Runner-

Seats/Guides Installed220cc N/A Angle N/A N/A 350-421c.i.

12803Pro Action™ 23º Style Raised Runner-

No Seats/Guides220cc N/A Angle N/A N/A 350-421c.i.

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PRO ACTION™ 23° STYLE RAISED RUNNERCast Iron Cylinder Heads



DESCRIPTION: 14° Small Block Chevy Cyl-inder Heads; Cast Iron; Angle Plug




The Pro Action™ 14˚ Heads offer the largest volume runner of any SBC iron cylinder head on the market at 235cc with the capability to be sized up to 285cc. In addition, the rolled valve angle, high port intake opening and offset valve location provide the most airfl ow potential of any competitive performance cylinder head. The fl atter piston-to-valve angle nets a 47cc combustion chamber to generate high compression without a raised piston dome. The heads are available in three versions: standard “as cast”, P-Port with seats and guide holes machined, and P-Port without machined seats or guide holes.

• Designed for use with Small Block Chevy circle track & NHRA Junior Fuel A Class nostalgia drag racing applications

• Features fl atter piston-to-valve angle to deliver high compression without the need for a large piston dome

• High intake port runner location provides line of sight to the valve, thereby increasing airfl ow & horsepower potential

• 235cc intake runner volume capable of 285cc volume sizing

BARE HEADS


ApplicationIn. Ex.

SMALL BLOCK CHEVY - PRO ACTION™ 14˚ CYLINDER HEADS, CAST IRON12804 Pro Action™ 14º - As Cast Runner- CNC Chamber 235cc 47cc Angle 2.125" + .800" Long 1.625" + .800" Long 350-421 c.i.

12805 Pro Action™ 14º - Seats/Guides Installed 235cc 47cc Angle N/A N/A 350-421 c.i.

12806 Pro Action™ 14º - No Seats/Guide Holes 235cc 47cc Angle N/A N/A 350-421 c.i.

12 R A C I N G H E A D H E L P ™ 1 . 8 7 7 . 7 7 6 . 4 3 2 3

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BARE HEADS

SERIES: PRO ELITE™

DESCRIPTION: 23° CNC-Ported Small Block Chevy Cylinder Heads; Cast Iron; Straight Or Angle Plug




y

, .708 Reach, Tapered Seat

The only SBC 23-degree cast iron head that is CNC-ported from the factory, the Pro Elite™ is designed to maximize airfl ow and horsepower for racing ap-plications where iron heads are mandated. Not only does this head feature CNC-ported runners, but the combustion chambers are also CNC-ported to relieve valve shrouding that occurs when the edge of the valve is in close proximity to the combustion chamber wall. Standard features include multi-angle intake and radiused exhaust valve seats for up to 5% more fl ow right out of the box!

• SBC 23° heads designed for iron-mandated circle track & drag racing

• CNC-ported intake & exhaust runners developed by RHS® engineers

• 2.055" multi-angle intake & 1.600" radius exhaust valve seats

• CNC-ported 69cc combustion chambers to improve airfl ow effi ciency


ApplicationIn. Ex.

SMALL BLOCK CHEVY - PRO ELITE™ 23˚ CNC-PORTED CYLINDER HEADS, CAST IRON12326 Pro Elite™ SBC 23º CNC-Ported 228cc 69cc Straight 2.055" + .100" Long 1.600" + .100" Long 383-421c.i.

12327 Pro Elite™ SBC 23º CNC-Ported 228cc 69cc Angle 2.055" + .100" Long 1.600" + .100" Long 383-421c.i.

12328 Pro Elite™ SBC 23º CNC-Ported* 240cc 53cc Straight 2.100" + .100" Long 1.625" + .100" Long 383-434c.i.

12329 Pro Elite™ SBC 23º CNC-Ported* 240cc 53cc Angle 2.100" + .100" Long 1.625" + .100" Long 383-434c.i.

PRO ELITE™ 23° CNC-PORTEDCast Iron Cylinder Heads

* Requires offset rocker arms on the intake side


14


DESCRIPTION: 24° Big Block Chevy Cyl-inder Head; Cast Iron Or Aluminum; Bare Or Fully Assembled; Hydraulic Roller & Mechani-cal Roller Assemblies Available; Angle Plug

APPLICATION: 496-632c.i. Recommended Street Perf./Drag Racing/Powerboat Racing


SPARK PLUGS: 14mm Thread, .750" Reach, Gasketed



First-rate performance, progressive engineering and unmatched quality are the foundations of the Pro Action™ head series, and the RHS® BBC heads feature all of them and more. Capable of making up to 1000 horsepower, Pro Action™ BBC Cylinder Heads provide you with more features, better fl ow-chart numbers and superior “as cast” fi nished quality. They are available in cast iron or aluminum, as cast or fully assembled and are a tremendous per-former for Big Block Chevy street, drag race and powerboat applications.

• Patented Clean Cast™ Technology provides superior port-to-chamber transitions & optimal airfl ow effi ciency

• Hardened multi-angle intake & radiused exhaust valve seats are uti-lized to outfl ow the competition by up to 5%

• Premium bronze valve guides for superior heat dissipation & longer life

• Refi ned water jacket design improves thermal conductivity & extra-thick deck faces allow angle milling for compression

ASSEMBLED HEADS

AssembledPart # Material Runners Chambers Spark Plug


Part #In. Ex.

BIG BLOCK CHEVY - PRO ACTION™ 24˚ CYLINDER HEADS, CAST IRON11301-01 Cast Iron 320cc 119cc Angle 2.250" 1.880" Hyd. Roller .600" 11301

11301-02 Cast Iron 320cc 119cc Angle 2.250" 1.880" Mech. Roller .750" 11301


11302-02 Cast Iron 360cc 119cc Angle 2.300" 1.880" Mech. Roller .750" 11302

BIG BLOCK CHEVY - PRO ACTION™ 24˚ CYLINDER HEADS, ALUMINUM11011-02 Aluminum 320cc 119cc Angle 2.250" 1.880" Hyd. Roller .600" 11011

11011-03 Aluminum 320cc 119cc Angle 2.250" 1.880" Mech. Roller .750" 11011


11012-03 Aluminum 360cc 119cc Angle 2.300" 1.880" Mech. Roller .750" 11012

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* .250” Long Intake Valve Length, .100" Long Exhaust Valve Length

Big

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hevy





DESCRIPTION: 24° CNC-Ported Big Block Chevy Cylinder Heads; Aluminum; Angle Plug

APPLICATION: 496-632c.i. Recommended Drag Racing/Powerboat Racing



Increased airfl ow volume and speed are most essential for drag racing and powerboat applications that seek to improve horsepower and torque. These new Pro Elite™ Aluminum Cylinder Heads are CNC-ported to maximize airfl ow and assure port-to-port consistency in runner shapes and sizes. The CNC-ported intake and exhaust runners optimize both the air volume and speed, while the CNC-ported combustion chambers relieve the valve shrouding that commonly occurs in “as cast” chambers. With more standard features than any Big Block Chevy head in the aftermarket, the Pro Elite™ series is sure to give your Big Block Chevy the performance it deserves.

• 24˚ aluminum cylinder heads designed for use with hardcore Big Block Chevy drag & marine racing applications

• CNC-ported 376cc or 339cc intake & 135cc exhaust runners with CNC-ported 121cc combustion chambers

• Multi-angle intake & radiused exhaust valve seats for superior airfl ow & increased horsepower straight from the factory

• Extra-thick deck surface allows angle milling for compression & in-creased rigidity; improves head gasket retention

BARE HEADS

15

Part # Description Runner Chamber Spark PlugValve Size

ApplicationIn. Ex.

BIG BLOCK CHEVY - PRO ELITE™ 24˚ CNC-PORTED CYLINDER HEADS, ALUMINUM11034 Pro Elite™ BBC 24º CNC-Ported 339cc 121cc Angle 2.250" + .250" Long 1.880" + .100" Long 468-540c.i.

11038 Pro Elite™ BBC 24º CNC-Ported 376cc 121cc Angle 2.300" + .350" Long 1.880" + .100" Long 540-632c.i.


PRO ELITE™ 24° CNC-PORTEDAluminum Cylinder Heads

Big

Blo

ck Chevy

ICATION: 496-632c.i. Recommended Racing/Powerboat Racing

E GUIDES: Premium Bronze Material

K PLUGS: 14mm Thread, .750" Reach, eted

Increased airfl ow volume and speed are most essential for drag racinpowerboat applications that seek to improve horsepower and torque. new Pro Elite™ Aluminum Cylinder Heads are CNC-ported to maximize aAluminum Cylinder Heads are CNC-ported to maximize a


16


DESCRIPTION: 18° Small Block Chrysler Magnum & LA-style Cylinder Heads; Cast Iron; Angle Plug

APPLICATION: 318-415c.i. Recommended Street Performance

VALVE GUIDES: Integral Cast Iron


RHS® and Indy Cylinder Heads teamed up to give Mopar enthusiasts the performance cast iron head they deserve. A replacement for small block LA and Magnum applications, the Pro Action™ 360 X Cylinder Heads feature a host of improvements over the factory originals and are an easy ticket to making 400 to 550 horsepower. The Pro Action™ 360 X is divided into two sub-series – the LA-X and the MA-X. The LA-X head uses the standard Chrysler LA intake manifold and rocker shaft, is drilled for the proper valve cover and gasket and contains both LA and Magnum accessory holes on both ends of the head. Designed for use with the Magnum intake manifold, rocker arms, gaskets and valve covers, the MA-X head features a pedes-tal large enough to enable 7/16"-14 drilling and tapping for stud-mounted rocker arms and guide plates.

• Cast iron replacement head designed for use with street/strip small block Chrysler LA & Magnum engines

• 179cc intake & 62cc exhaust runners with a 62cc combustion chamber

• Hardened multi-angle intake (1.920") & radiused exhaust (1.625") valve seats for up to 5% more fl ow out of the box

• Dual pattern exhaust bolts (standard & W2)

• Extra thick deck faces to allow angle milling

• Revised water jacket design for cooler, more effi cient engine operations

BARE HEADS

Part # Description Runner Chamber Spark PlugValve Size

ApplicationIn. Ex.

SMALL BLOCK CHRYSLER - PRO ACTION™ 360 X CYLINDER HEADS, CAST IRON20300 MA-X Small Block Chrysler Magnum 179cc 62cc Angle 1.920" x 5/16" 1.625" x 5/16" 318-415 c.i.

20301 LA-X Small Block Chrysler LA 179cc 62cc Angle 1.920" x 5/16" 1.625" x 5/16" 318-415 c.i.

R A C I N G H E A D H E L P ™ 1 . 8 7 7 . 7 7 6 . 4 3 2 3

With combined R&D investment and col-laborated design efforts, airfl ow special-ists at RHS® and Chrysler experts at Indy were able to develop the ultimate cyl-inder heads for Mopar-powered street/strip applications.

* Stock Valve Length

Sm

all B

lock

Chr

ysle

r PRO ACTION™ 360 XCast Iron Cylinder Heads



DESCRIPTION: 20° Small Block Ford Cyl-inder Heads; Cast Iron Or Aluminum; Bare Or Fully Assembled; Flat Tappet & Hydraulic Roller Assemblies Available

APPLICATION: 289-421c.i. Recommended Street Performance/Drag Racing/Circle Track Racing


SPARK PLUGS: Aluminum: 14mm Thread, .750” Reach, Gasketed – Cast Iron: 14mm Thread, .460” Reach, Tapered


The Small Block Windsor and 5.0-liter engines are two of the most popu-lar engine designs in the history of Ford technology. And now, RHS® has developed an impressive head series to provide Small Block Ford engines with increased airfl ow and horsepower – no porting or modifi cations needed. RHS® Pro Action™ Small Block Ford Cylinder Heads include more standard features than any Ford head in the industry, including premium bronze valve guides for extended valve sealing and durability. With a host of runner and chamber sizes to meet various performance needs, these heads are truly the race winner’s choice.

• Designed for Small Block Ford 289-351 Windsor & 5.0-liter engines; compatible with all OEM & aftermarket components

• Smaller valve package allows usage without piston modifi cation

• Dual exhaust bolt pattern fi ts both stock manifold & large tube headers

• Clean Cast Technology™ provides better casting quality for minimized airfl ow restriction & improved airfl ow effi ciency

ASSEMBLED HEADS

17

AssembledPart # Material Runners Chambers Spark Plug


Part #In. Ex.

SMALL BLOCK FORD - PRO ACTION™ 20˚ CYLINDER HEADS, CAST IRON35304-01 Cast Iron 180cc 58cc Angle 2.020" 1.600" Flat Tappet .560" 35304













Small Block Ford Cylinder Heads - Continued On Pg. 18* .100” Long Intake & Exhaust Valve Length


Sm

all Blo

ck Fo

rd



RHS® exclusive Clean Cast Technology™ provides a high-quality casting surface. This gives you smoother port-to-chamber transitions & improves airfl ow effi ciency.

CLEAN CAST TECHNOLOGY™

ASSEMBLED HEADS



Part #In. Ex.

SMALL BLOCK FORD - PRO ACTION™ 20˚ CYLINDER HEADS, ALUMINUM35010-01 Aluminum 160cc 58cc Angle 1.940" 1.600" Flat Tappet .560" 35010
















R A C I N G H E A D H E L P ™ 1 . 8 7 7 . 7 7 6 . 4 3 2 3

* .100” Long Valve Length

18

PRO ACTION™ 20° cont’d.Cast Iron Or Aluminum Cylinder Heads

Custom Assemblies Are Available.Call For Information.


DESCRIPTION: 20° CNC-Ported Small Block Ford cylinder heads; aluminum

APPLICATION: 289-351c.i. recommended Circle Track & Drag Racing


SPARK PLUGS: 14mm thread, .750" reach, gasketed

Designed with the Small Block Ford racing enthusiast in mind, these heads give you all of the benefi ts of professional CNC porting – straight from the factory! However, the CNC porting is done off of a known port, providing more airfl ow consistency than hand-ported runners. In addition to the CNC-ported intake and exhaust runners, the combustion chambers are also CNC-ported to moderate valve shrouding and maximize airfl ow effi ciency. Prior to porting, the heads are given a multi-angle Serdi valve job for up to 5 % more airfl ow right from the start!

• Designed for use with Small Block Ford 289, 302 & 351 Windsor drag and circle track racing applications

• CNC-ported 205cc/221cc intake & 79cc exhaust runners

• Unique multi-angle intake & radiused exhaust valve seats for in-creased airfl ow volume horsepower potential

• CNC-ported 62cc combustion chamber moderates valve shrouding

• Thick deck surface allows angle milling for compression & increases rigidity; improves head gasket retention

BARE HEADS


ApplicationIn. Ex.

SMALL BLOCK FORD - PRO ELITE™ 20˚ CNC-PORTED CYLINDER HEADS, ALUMINUM35020 Pro Elite™ SBF 20º CNC-Ported 205cc 62cc Angle 2.055" + .100" Long 1.600" + .100" Long 289-351c.i.

35025 Pro Elite™ SBF 20º CNC-Ported 221cc 62cc Angle 2.080" + .100" Long 1.625" +. 100" Long 289-351c.i.

W W W . R A C I N G H E A D S E R V I C E . C O M 19

PRO ELITE™ 20°Aluminum Cylinder Heads

Sm

all Blo

ck Fo

rd

ELITE™

20° CNC-Ported Small Block ds; aluminum

289-351c.i. recommended ag Racing

Premium Bronze Material

14mm thread, .750" reach,

Designed with the Small Block Ford racing enthusiast in mind, these hgive you all of the benefits of professional CNC porting – straight from


When it comes to street performance and/or competitive racing, the horsepower capability of cylinder heads can be limited if not used with the ideal parts. Cylinder head studs and components can mean the difference between high performance dura-bility and stress-related component failures. That’s why RHS® tests all of its cylinder head series with premium COMP Cams®

components – to give you the optimal airfl ow combination for maximum engine performance. These exclusive RHS® parts kits give you the ideal combination of components for your cylinder head assembly and are proven to offer superior performance to your specifi c engine application.

Parts Kits

20

Part # Description IntakeValve

ExhaustValve

ValveLock

Retainer InnerSpring

OuterSpring

Spring Seat ValveSeals

RockerStuds

GuidePlatesAluminum Cast Iron

SMALL BLOCK CHEVY

12987-01 180cc Runner, Hyd. Roller 6001 6002 611 740 975 984 4770 4771 529 4503 4808

12972-01 180cc Runner, Flat Tappet 6001 6002 601 743 N/A 972 4696 529 4502 4808

12918-01B180cc Runner, Hyd. Roller

w/ Beehive™ Springs 6001 6002 648 787 N/A 26918 4705 529 4503 4808

12987-02 235cc Runner, Hyd. Roller 6003 6002 611 740 975 984 4770 4771 529 4503 4808



ExhaustValve

ValveLock


OuterSpring

SpringSeat

ValveSeals

RockerStuds

GuidePlates

SMALL BLOCK FORD

35987-01 160cc Runner, Hyd. Roller 6014 6002 611 740 975 984 4771 529 4503 4816


35972-02 180cc Runner, Flat Tappet & Hyd. Roller 6001 6002 601 743 N/A 972 4696 529 4502 4808

35987-02 200cc Runner, Flat Tappet & Hyd. Roller 6001 6002 611 740 975 984 4771 529 4503 4808




ExhaustValve

ValveLock


OuterSpring

SpringSeat

ValveSeals

RockerStuds

GuidePlates

BIG BLOCK CHEVY


11991-01 320cc Runner, Solid Roller 6022 6023 611 733 N/A 991 4774 529 4512 4806


11991-02 360cc Runner, Solid Roller 6021 6023 611 733 N/A 991 4774 529 4512 4806

11120-01B 320cc Runner, Hyd. Roller w/ Beehive™ Springs 6022 6023 611 795 N/A 26120 4696 529 4512 4806

CYLINDER HEAD ASSEMBLY KITS

Bolt Kit Part # Description Stud Kit

Part # Description

SMALL BLOCK CHEVY SMALL BLOCK CHEVY

HBK-12100 23° Cast Iron OEM & Gen III Vortec/Truck, Hex HSK-12100 23° Cast Iron OEM & Gen III Vortec/Truck, 12-Point Nuts

BIG BLOCK CHEVY BIG BLOCK CHEVY

HBK-11100 Late Bowtie Iron & Aluminum, Hex HSK-11100 Late Bowtie Iron & Aluminum, 12-Point Nuts

SMALL BLOCK FORD SMALL BLOCK FORD

HBK-31100 289-302, 5.0L w/Factory or Aftermarket Heads, 12-Point Nuts HSK-31100 289-302, 5.0L w/Factory or Aftermarket Heads, 1/2"-13w/ 12-Pt. Nuts

HBK-35100 351 Windsor w/ Factory or Aftermarket Heads, Hex HSK-35100 351 Windsor w/ Factory or Aftermarket Heads, 12-Point Nuts

CYLINDER HEAD BOLT KITS CYLINDER HEAD STUD KITS

21

Valve TrainYour cylinder heads are only as good as the valve train that works with them. In order to maximize the performance capability of each application, RHS® conducts joint re-search and development with valve train innovator COMP Cams®. Through combined engineering efforts, the companies design and test their products together to maxi-mize horsepower potential for one another. That’s why RHS® strongly recommends these top quality valve train components from COMP Cams®.

Polylocks

• Designed for unmatched strength & superior locking force

• Magnum polylocks designed for mod-erate lift & spring pressure applications

• Hi-Tech™ Polylocks work well in all high end race applications

• Stud girdle polylocks are precision ground for minimum runout & tapered for extra strength in the locking area

Guide Plates

• Designed using stereo lithography techniques for precise fi t

• Hardened & black oxide fi nished

• Feature exact stud placement & rounded contact points

• Available in many different confi gra-tions to fi t your engine’s needs

Part # Description Type Pushrod Size Stud Diameter

CHEVROLET4800-8A 265-400 Raised 5/16" 7/16"

4802-8A 265-400 Raised 3/8" 7/16"

4808-8A 265-400 Flat 5/16" 7/16"

4810-8A 265-400 Flat 3/8" 7/16"

4836-8E 265-400 Flat Adjustable 5/16" 7/16"

4837-8E 265-400 Flat Adjustable 3/8" 7/16"

4806-8 396-454 Raised 3/8" 7/16"

4820-8 396-454 Raised 7/16" 7/16"

GM LS4854-8B GM LS Series Flat 5/16" 8mm

4856-8B GM LS Series Flat 3/8" 8mm

FORD4803-8A Cleveland Raised 5/16" 7/16"

4804-8A Cleveland Raised 3/8" 7/16"

4816-8A 289-351W Flat 5/16" 7/16"

4818-8A 289-351W Flat 3/8" 7/16"

4834-8A 429-460 Raised 5/16" 7/16"

4838-8A 429-460 Raised 3/8" 7/16"

DODGE4825-8C Magnum V8 Flat 5/16" 5/16"

OLDSMOBILE4842-8D 350-455 Flat 5/16" 5/16"

4843-8D 350-455 Flat 3/8" 5/16"

PONTIAC4842-8D 350-455 Flat 5/16" 5/16"

4843-8D 350-455 Flat 3/8" 5/16"

4729 Stud Boss Cutter

w/ Arbor/PilotN/A N/A N/A

A. Some applications require machine work

B. Replacement components only, must be used with #13703-KIT & #13705-KIT

C. Only for engines with stud mount rockers. No machine work required. For 3.9L V6, use -6 suffi x, for 8.0L V10 trucks, use -10 suffi x.

D. No machine work required with Part #4542-16 stud

E. Fits Ford 289-351W

Part # Description Stud Dia.

4600-16 Hi-Tech™ Polylock for Aluminum, Stainless Rockers 7/16"

4601-16 Hi-Tech™ Polylock for Aluminum, Stainless Rockers 3/8"

4602-16 Magnum Polylock 3/8"

4603-16 Magnum Polylock 7/16"

4508-1 Stud Girdle Adjusting Nut 7/16"

4508-16 Stud Girdle Adjusting Nut (12) #4508 & (4) #4508S 7/16"

4508S-1 Stud Girdle Adjusting Nut (w/ Snap Ring to Hold Girdle Bar) 7/16"

4509-1 Stud Girdle Adjusting Nut 3/8"

4509-16 Stud Girdle Adjusting Nut (12) #4509 & (4) #4509S 3/8"

4509S-1 Stud Girdle Adjusting Nut (w/ Snap Ring to Hold Girdle Bar) 3/8"

4510-8 Stud Girdle Adjusting Nut, Intake BB Chevrolet 7/16"

4511-16 Stud Girdle Adjusting Nut, BB Ford Threaded Through Full Length 7/16"


Valve Train

Pushrods

Made from one-piece .080” wall chromemoly steel tubing, COMP Cams®

pushrods are heat-treated for both durability and guide plate compat-ibility. The black oxide fi nish and laser-etched part number and length give these pushrods a great performance look and also shed oil giving you smoother, more effi cient valve train operation. The Magnum series is designed for street performance and mild racing while the Hi-Tech™

series is ideal for hardcore street and race applications.

MAGNUM PUSHRODS

Part # Description Guide Plates DiameterLength

EndIntake / Exhaust

CHEVROLET7608-16 V8 265-400 + 90° V6 200-262 w/ OEM Hyd. Roller Cam Yes 5/16" 7.200" F-F

7609-16 V8 265-400 + 90° V6 w/ Retro-Fit Hydraulic Roller Cam Yes 5/16" 7.300" F-F

7372-16 V8 265-400 + 90° V6 200-262, Hardened Stock Length Yes 5/16" 7.800" F-F

7693-16 V8 265-400 + 90° V6 200-262, +.100" Hardened Yes 5/16" 7.900" F-F




7513-16 V8 265-400 + 90° V6 200-262, Hardened Stock Length Yes 3/8" 7.800" D-D

7684-16 V8 265-400 + 90° V6 200-262, +.100" Hardened Yes 3/8" 7.900" D-D

7154-16 V8 396-454, #7131 Intake - #7141 Exhaust (Standard Length, Standard Block) Yes 3/8" 8.280"/9.250" D-D

7663-16V8 396-454, #7164 Intake - #7174 Exhaust

(w/ Retro-Fit Hydraulic Roller Cam, Standard Block)Yes 3/8" 7.750"/8.700" D-D

7654-16 V8 366-427, #7651 Intake - #7661 Exhaust (Truck & Marine Tall Deck Block) Yes 3/8" 8.680"/9.652" D-D

CHRYSLER7592-16 V8 273-360 w/ Non-Adjustable Rockers No 5/16" 7.513" C-C

7692-16 V8 273-360 w/ Adjustable Rockers No 5/16" 7.342" A-C

7402-16 V8 383-400 w/ Non-Adjustable Rockers No 5/16" 8.555" C-C

7422-16A V8 383-400 w/ Adjustable Rockers No 3/8" 8.710" *

7412-16 V8 440 w/ Non-Adjustable Rockers No 5/16" 9.295" C-C

7432-16 V8 440 w/ Non-Adjustable Rockers No 3/8" 9.295" A-C

7442-16 V8 440 w/ Adjustable Rockers No 3/8" 9.030" A-C

7632-16 Special for Dodge Magnum Rocker Kit (#1425-KIT) Yes 5/16" 6.800" F-F

FORD7632-16 V8 221-302, 1962-69 Yes 5/16" 6.800" F-F

7631-16 V8 302, 1969-85 Non-Roller, Non-H.O. Yes 5/16" 6.900" F-F

7492-16 V8 Boss 302, 1969-70 Boss Yes 5/16" 7.605" E-E

7472-16 V8 351W, 1969-78 Yes 5/16" 8.150" F-F

7502-16 V8 351C (Cobra Jet), 1970-74 Yes 5/16" 8.400" F-F

7522-16 V8 351C, 1970-74 Yes 3/8" 8.400" D-D

7532-16 V8 Boss 351C, 1971-72 Yes 3/8" 8.492" G-G

7530-16B V8 352-428, 1965-76 w/ Adjustable Rockers No 11/32" 9.157" **

7651-16 V8 429-460, 1969-71 Yes 3/8" 8.680" D-D

OLDSMOBILE7131-16 V8 260-403, .046" Longer Than Stock Yes 3/8" 8.280" D-D

7582-16 V8 400 & 455, Hardened Replacement Yes 5/16" 9.547" E-E

7664-16 V8 400 & 455, +.100" Hardened Yes 3/8" 9.647" G-G

PONTIAC7262-16 V8 350-455, 1968-79 Yes 5/16" 9.130" F-F

7263-16 V8 350-455, 1968-79 w/ Solid Lifter Cam Yes 5/16" 9.300" F-F

*. 3/8" Non-oiling cup and 3/8" non-oiling ball

**. 5/16" Non-oiling cup and 3/8" non-oiling formed tip

A 5/16" non-oiling pressed-in cup B 5/16" non-oiling welded ball C 5/16" non-oiling pressed-in ball D 3/8" body w/ 5/16" oiling formed tip E 5/16" oiling pressed-in ball F 5/16" body w/ 5/16" oiling formed tip G 3/8" body w/ 5/16" oiling pressed-in tip

A B C D E F G

Part # Description WallThickness Diameter

LengthIntake / Exhaust

SMALL BLOCK CHEVROLET7940-16 -.600" Short Standard Length Small Block Chevrolet OE Hydraulic Roller Lifter .080" 5/16" 7.200"

7944-16 -.550" Short Small Block Chevrolet .080" 5/16" 7.250"

7949-16 -.500" Short Small Block Chevrolet Retro-Fit Standard Length Hydraulic Roller Lifter .080" 5/16" 7.300"




7972-16 Standard Length Small Block Chevrolet .080" 5/16" 7.800"

7974-16 +.050" Long Small Block Chevrolet .080" 5/16" 7.850"





7913-16 Standard Length Small Block Chevrolet, 3/8" Diameter .080" 3/8" 7.800"

7984-16 +.100" Long Small Block Chevrolet, 3/8" Diameter .080" 3/8" 7.900"

GM GEN III LS1/LS2/LS67949-16 -.100" Short GM Gen III/LS1/LS2/LS6 .080" 5/16" 7.300"

7950-16 -.050" Short GM Gen III/LS1/LS2/LS6 .080" 5/16" 7.350"

7955-16 Standard Length GM Gen III/LS1/LS2/LS6 .080" 5/16" 7.400"

7956-16 +.050" Long GM Gen III/LS1/LS2/LS6 .080" 5/16" 7.450"

7957-16 +.100" Long GM Gen III/LS1/LS2/LS6 .080" 5/16" 7.500"

BIG BLOCK CHEVROLET7954-16 Standard Length Big Block Chevrolet Set (8) - #7931 Intake & (8) - #7941 Exhaust .080" 3/8" 8.280"/9.250"

7982-16 Standard Big Block +.100" Long Set (8) - #7969 Intake & (8) - #7979 Exhaust .080" 3/8" 8.380"/9.350"

7998-16 Standard Big Block w/ Retro-Fit Hydraulic Roller Cam Set (8) - #8905 Intake & (8) - #7907 Exhaust .080" 3/8" 7.750"/8.700"

7964-16 Standard Length Big Block Tall Deck Set (8) - #7951 Intake & (8) - #7961 Exhaust .080" 3/8" 8.680"/9.650"

7942-16 +.100" Long Big Block Tall Deck Set (8) - # 7968 Intake and (8) - #7978 Exhaust .080" 3/8" 8.780"/9.750"

7962-16 Standard Length Big Block Set (8) - #7911 Intake and (8) - #7988 Exhaust .125" 7/16" 8.275"/9.250"

7952-16 Standard Length Big Block Tall Deck Set (8) - #7943 Intake & (8) - #7953 Exhaust .125" 7/16" 8.675"/9.650"

SMALL BLOCK FORD7929-16 Standard Length Small Block Ford 1962-69 221-302 .080" 5/16" 6.800"

7930-16 +.050" Long Small Block Ford 1962-69 221-302 .080" 5/16" 6.850"

7933-16 +.100" Long Small Block Ford 1962-69 221-302 .080" 5/16" 6.900"

7930-16 Standard Length Small Block Ford 1968-85 255 and 302 .080" 5/16" 6.850"

7935-16 +.100" Long Small Block Ford 1968-85 255 and 302 .080" 5/16" 6.950"

7997-16 -.050" Short Small Block Ford 1969-78 351W .080" 5/16" 8.100"

7965-16 Standard Length Small Block Ford 1969-78 351W .080" 5/16" 8.150"

7966-16 +.050" Long Small Block Ford 1969-78 351W .080" 5/16" 8.200"

7945-16 Standard Length Small Block Ford 1970-74 351C and Cobra Jet .080" 5/16" 8.400"

7975-16 +.050" Long Small Block Ford 1970-74 351C and Cobra Jet .080" 5/16" 8.450"

7976-16 +.100" Long Ford 1970-74 351C and Cobra Jet; Standard Length Ford 1971-C47'72 Boss 351 .080" 5/16" 8.500"

7932-16 Standard Length Small Block Ford 1971 and '72 Boss 351 .080" 3/8" 8.500"

BIG BLOCK FORD7976-16 -.050" Short Big Block Ford 1972-78 429-460 .080" 5/16" 8.500"

7948-16 Standard Length Big Block Ford 1972-78 429-460 .080" 5/16" 8.550"

7977-16 +.050" Long Big Block Ford 1972-78 429-460 .080" 5/16" 8.600"

7992-16 -.100" Short Big Block Ford 1972-78 429-460 .080" 3/8" 8.450"



7968-16 +.100" Long Big Block Ford 1969-71 429-460 .080" 3/8" 8.780"

SMALL BLOCK CHRYSLER – NON-ADJUSTABLE ROCKERS7956-16 -.050" Short Small Block Chrysler “A” 273-360 .080" 5/16" 7.450"

7957-16 Standard Length Small Block Chrysler “A” 273-360 .080" 5/16" 7.500"

7958-16 +.050" Long Small Block Chrysler “A” 273-360 .080" 5/16" 7.550"

BIG BLOCK CHRYSLER – NON-ADJUSTABLE ROCKERS7934-16 Standard Length Big Block Chrysler “B” 383-400 .080" 3/8" 8.550"

7977-16 +.050" Long Big Block Chrysler “B” 383-400 .080" 5/16" 8.600"

7923-16 Standard Length Big Block Chrysler “RB” 413-440 .080" 3/8" 9.300"

BIG BLOCK CHRYSLER – ADJUSTABLE ROCKERS7924-16B Standard Length Big Block Chrysler “B” 383-400 with Adjustable Rocker Arms .080" 3/8" 8.710"

CHRYSLER 5.7L HEMI7914-16 Standard Length 5.7L Hemi Set (8) - #7974-8 Intake and (8) - #7769-8 Exhaust .080" 5/16" 6.600"/7.850"

*Additional confi gurations available. For the full list of applications, go to www.compcams.com.

HI-TECH™ PUSHRODS

23

24

ULTRA PRO MAGNUM™

ROCKER ARMS

ULTRA-GOLD™

ALUMINUM ROCKER ARMS

Valve Train

Part # Description Rocker Stud Ratio

CHEVROLET19001-16A V8 265-400 3/8" 1.5

19001-12A V6 200-262 3/8" 1.5

19002-16A V8 265-400 3/8" 1.6

19002-12A V6 200-262 3/8" 1.6

19003-16A V8 265-400 3/8" 1.65

19003-12A V6 200-262 3/8" 1.65

19004-16A V8 265-400 7/16" 1.5

19004-12A V6 200-262 7/16" 1.5

19005-16A V8 265-400 7/16" 1.6

19005-12A V6 200-262 7/16" 1.6

19006-16A V8 265-400 7/16" 1.65

19006-12A V6 200-262 7/16" 1.65

19021-16B V8 396-454 7/16" 1.7

GM LS19024-16C GM LS Series 8mm 1.72

19025-16C GM LS Series 8mm 1.82

FORD19043-16D V8 289-302-351W 3/8" 1.6

19045-16 V8 351C 7/16" 1.73

19048-16D V8 289-302-351W 3/8" 1.72

19044-16D V8 289-302-351W 7/16" 1.6

19049-16D V8 289-302-351W 7/16" 1.72

PONTIAC19060-16 V8 265-455 7/16" 1.5

19061-16 V8 265-455 7/16" 1.65

A. Will not replace late model rocker

B. Includes pedestals and bolts

C. Must use screw-in studs and guide plates

D. Requires stud #4514-16 to replace late model pedestal

Part # Description Rocker Stud Ratio

CHEVROLET1601-12 V6 200-262 3/8" 1.52

1601-16 V8 265-400 3/8" 1.52

1602-12 V6 200-262 3/8" 1.6

1602-16 V8 265-400 3/8" 1.6

1604-12 V6 200-262 7/16" 1.52

1604-16 V8 265-400 7/16" 1.52

1605-12 V6 200-262 7/16" 1.6

1605-16 V8 265-400 7/16" 1.6

1607-8 V8 265-400 Twisted Wedge Head, Intake Valve 3/8" 1.52




1617-12 V6 1988 & Later w/ Self Aligning Rockers 3/8" 1.52




1620-16 V8 396-454 7/16" 1.7

1629-16 V8 348-409 3/8" 1.7

GM LS1675-16 GM LS Series 3/8" 1.75

1676-16 LS3-L92-L99 (Factory Off-Set) 3/8" 1.77

FORD1619-12 V6 3.8L 3/8" 1.7

1630-16 V8 Boss 302, 351C, 429-460 7/16" 1.7

1631-16 V8 289-302-351W 3/8" 1.6

1632-16 V8 289-302-351W 7/16" 1.6

1634-16 V8 Self Aligning Rockers 3/8" 1.6

ULTRA PRO MAGNUM™

ROCKER ARMS

• Investment cast 8650 chromemoly steel body & arched, web-like design increase strength & rigidity while signifi cantly re-ducing the moment of inertia

• CAD & FEA design is approximately 29% stronger than the previous Pro Mag-num™ Rocker Arm design

• Black oxide exterior fi nish helps prevent corrosion of the rocker body

• Increased retainer & spring clear-ance for use with large diameter valve springs, retainers & +.050" locks

• Feature oversized trunions, precision-sorted needle bearings, hardened roller tips, rebuildable design & lifetime guaran-tee on the rocker body

• CNC-machined, lightweight design yields superior quality & consistency

• Precision-sorted trunion bearing de-signed to withstand highly aggressive valve spring pressure & valve lifts

• Additional clearance versus competitors - clears 1.650" O.D. spring

• Increased retainer & spring clearance for use with large diameter valve springs, re-tainers & +.050" valve locks

• Designed specifi cally for high perfor-mance street & racing engines

SHAFT MOUNT ALUMINUM ROCKER SYSTEMS

Part # DescriptionRatio Offset

Intake Exhaust Intake Exhaust

CHEVROLET1502 Small Block AFR#190-195-210 1.6 1.5 .250 .080

1503A Small Block Dart Iron Eagle 1.6 1.5 .170 .170

1506 Small Block Brodix Track 1 1.6 1.5 .170 .080

1508 Small Block GM Bowtie 18º 1.6 1.5 .550 .000

1510 Small Block RHS™ Pro Action™ Iron 1.5 1.5 .170 .080

1511 Small Block RHS™ Pro Action™ Aluminum 1.5 1.5 .250 .080

1519 Small Block Brodix 8X, 10X, 11X 1.6 1.5 .450 .080

1520Big Block RHS™ Pro Action™

Aluminum & Iron 320/360 Runner1.7 1.7 .000 .000

1504 Big Block Standard/Dart Iron Eagle 1.7 1.7 .000 .000

1505 Big Block Brodix 2+, Dart 320/360 1.7 1.7 .000 .000

1507 Big Block Brodix 2 Xtra 1.7 1.7 .000 .000

1512Big Block Brodix Big Duke/Dart Iron Eagle,

World Products Grumpy1.7 1.7 .000 .000

1513 Big Block 18 ˚ Brodix Big Duke/Dart Big Chief 1.7 1.7 .750 .400

5712160 Small Block Brodix/Pontiac -12 1.6 1.5 .450 .000

5011170 Big Block Dart Iron Eagle 1.7 1.7 .000 .000

GM LS1500 GM LS Series 1.7 1.7 .000 .000

1501 GM LS Series 1.8 1.8 .000 .000

1509 GM Gen III/LS1 RHS™ Pro Elite™ 1.7 1.7 .050 .050

1521 GM LS3/L92 1.7 1.7 .215 .000

CHRYSLER

1515Small Block (273-360) OEM Iron Head Single

(OE Through Shaft Oiling)1.5 1.5 .000 .000

1516Big Block (383-440) OEM Iron Head Single

(OE Through Shaft Oiling)1.5 1.5 .250 .080

1517Big Block (383-440) Indy Head 440-1 &

440-C Single (OE Through Shaft Oiling)1.5 1.5 .800 .000

1522B 426 Hemi OEM Iron Head 1.6 1.5 1.900 .000

FORD1514 289-351W Production Head 1.6 1.6 .000 .000

PONTIAC1518 Edelbrock P8 1.5 1.5 .080 .080

1519 867 with 40/60 Spacing 1.6 1.5 .450 .080

5712160 Small Block Brodix/Pontiac -12 1.6 1.5 .450 .000

A. This system will not work on the 49cc Dart Iron Eagle Cylinder Heads

B. Requires spray bar oiling or oiling valve cover

Note: Custom applications available, call CAM HELP® 1.800.999.0853

• Rigidity of shaft system adds stability to the cylinder head & valve train

• Most effi cient way to transfer the power of the cam to the valve

• Made from 2024 aluminum & use 8620 hardened steel shaft

• Oiling system ensures consistent oil fl ow from the pushrod cup to the shaft bearings to the roller tip

• Designed using the latest CAD & FEA technology & fi eld tested by experts in every genre of racing


Valve Train

• Made of 6061-T6 aluminum for light weight & anodized to reduce windage

• Solid bar one & two-piece spring loaded designs

• Kits come complete with hex head adjusting nuts, in-terlocking set screws & all necessary hardware

• Magnum studs are best for moderate lift & spring pres-sure applications

• Hi-Tech™ Race Studs work in all high-end applications

• Hi-Tech™ Race Studs fea-ture thin jam nut for rocker clearance, rolled threads for maximum contact & ground-fl at top for accu-rate valve adjustment

• Black oxide fi nish prevents oxidation of the threads

Stud Girdles

Rocker Arm Studs

Part # Description Stud Diameter

CHEVROLET4007 265-400 Solid Bar Design 3/8"

4009 265-400 Solid Bar Design 7/16"

4001 265-400 Spring Loaded Design 3/8"


4018 265-400 Brodix Pontiac Spring Loaded Design, 40/60 Stud Spacing 7/16"

4019 265-400 Brodix Pontiac Spring Loaded Design, 40/60 Stud Spacing 3/8"

4010A 265-400 Alum. Bowtie Cyl. Head Solid Bar Design 7/16"

4011 265-400 Brownfi eld Cyl. Head Solid Bar Design 7/16"

4012 265-400 Brodix Pontiac Solid Bar Design, 40/60 Stud Spacing 7/16"

4021 396-454 Solid Bar Design Standard Stud Spacing, Brodix-2 7/16"

FORD4013 289-302, 351W Standard Head 3/8"

4014 289-302, 351W Standard Head 7/16"

4015 289-302, 351W RHS® Pro Action™ or Motorsport Aluminum Head 7/16"

4016 351W Boss, Motorsport Aluminum Head 7/16"

4017 429-460 TFS Motorsport Aluminum Head, Will Not Fit Stock OEM Head 7/16"

4034 429-460 Production Heads, Including Cobra Jet & Super Cobra Jet Models 7/16"

Note: All COMP Cams® Ford stud girdles shown above are solid bar design

A. Cast iron Bowtie heads & Dart Iron Eagle heads use standard Chevrolet girdles Part #4007, #4009, #4001 & #4004

ULTRA GOLD™ STUD GIRDLES

Part # Description Stud Diameter

CHEVROLET4022 265-400 Spring Loaded Design 7/16"





4035 396-454 for RHS® Head 7/16"

FORD4024 289-302, 351W Solid Bar Design 7/16"

4030 289-302, 351W Solid Bar Design 3/8"

Note: Kits are complete with hex head adjusting nuts, interlocking set screws & all hardware

Part # DescriptionBase Thread Stud

DiameterStud

LengthDiameter Length

4502-16 Magnum Rocker Stud 7/16" .680" 3/8" 1.750"

4503-16 Magnum Rocker Stud 7/16" .825" 7/16" 1.750"

4504-16 Magnum Rocker Stud Ford 5/16" .680" 3/8" 1.750"

4542-16A Magnum Rocker Stud Oldsmobile,

Dodge Magnum V6, V8, V105/16" .580" 3/8" 1.520"

4505-16 Hi-Tech™ Race Rocker Stud 7/16" .680" 3/8" 1.750"



4507-8Hi-Tech™ Race Exhaust for 396-454 for

Chevrolet w/ Aluminum Heads7/16" 1.680" 7/16" 2.000"

4554-16B Hi-Tech™ Race Rocker Stud for GM Gen III/LS1/LS2/LS6 8mm .800" 3/8" 1.500"

4512-16 Hi-Tech™ Race Rocker Stud for Chevrolet Big Block 7/16" .750" 7/16" 1.900"

4514-16Hi-Tech™ Race Rocker Stud for

Chevrolet Big Block Mark V & Mark VI3/8" .750" 7/16" 1.900"

A. Must be used with guide plates

B. Replacement components only, must be used with #13705-KIT

26

Valve Train

Part # Description StudDiameter

LockGroove

ValveType

HeadDiameter

StemSize

TipLength

6006-8 Chevrolet 265-400 4.911" Single Intake 1.940” 11/32" N/A

6004-8 Chevrolet 265-400 4.911" Single Intake 2.020" 11/32" N/A







6016-8 Chevrolet 265-400 4.911" Single Exhaust 1.500" 11/32" N/A




6022-8 Chevrolet 396-454 5.468" Single Intake 2.250" See Below* N/A

6021-8 Chevrolet 396-454 5.468" Single Intake 2.300" See Below* N/A

6023-8 Chevrolet 396-454 5.454" Single Exhaust 1.880" See Below* N/A

6039-8 GM Gen III LS1/LS2/LS6 4.900" Single Intake 2.020" 8mm .170"



6048-8 GM Gen III LS1/LS2/LS6 4.930" Single Exhaust 1.570" 8mm .170"






* Big Block Chevrolet factory valve stem size is 3/8", however all COMP Cams® Big Block Chevy valves listed feature 11/32" valve stem diameter for increased fl ow & less weight 27

SportsmanStainless Steel Valves

COMP Cams® Sportsman Stainless Steel Valves are avail-able in a variety of diameters and stem lengths for street/competition engines. Made from 21-4N forged steel alloy with 50 HRc minimum hard tips (eliminates the need for a lash cap), these valves deliver tremendous performance and durability. The hard chrome-plated 11/32" stems utilize pro-prietary oil retention surfacing, rather than thin fl ash plating.

To increase fl ow without in-creasing the valve diameter, high fl ow under-head fi llet re-lief was added to the design. Additionally, the swirl-polished fi llets generate a higher fl ow rate with reduced radial crack propagation, increasing their resistance to failure.

• 21-4N forged high-strength stainless steel alloy for per-formance & durability

• Chrome-plated stem and hardened valve tip with no lash cap required

• Spiral polished & under-head machining for mini-mum fl ow restriction

• Precision manufactured to strict tolerances & rigor-ously quality inspected

• Recommended for all hy-draulic & solid fl at tappet or roller lifter applications

Gaskets

Gaskets

Properly changing cylinder heads can-not be completed without replacing the gaskets that were disturbed when the old heads were removed. RHS® offers high quality intake, exhaust and valve cover gaskets to suit many GM and Ford ap-plications. The intake manifold and valve cover gaskets are made from a silicone-reinforced material for superb sealing characteristics and are designed for reli-able, leak-free performance – even when used in high-powered race engines. The header gaskets feature reinforced graph-ite construction for maximum heat resis-tance and protection against blowing out, ensuring that your exhaust system oper-ates at peak effi ciency.

Part # Application Description Port Dimensions

INTAKE GASKETS1707 Small Block Chevy .060" Thick Paper w/ Silicone 1.32" x 2.22"

1710 Big Block Chevy .060" Thick Paper w/ Silicone 1.85" x 2.55"

1713 Small Block Ford .060" Thick Paper w/ Silicone 1.29" x 2.12"

EXHAUST GASKETS1708 Small Block Chevy Graphite -SBC Small Port 1.51" x 1.56"

1711 Big Block Chevy Graphite 1.89" x 1.95"

1714 Small Block Ford Graphite 1.30" x 1.60"

1716 GM Gen III LS1/LS2/LS6 Graphite 1.57" x 1.76"

VALVE COVER GASKETS1709 Small Block Chevy .120" Thick Paper w/ Silicone N/A

1712 Big Block Chevy .120" Thick Paper w/ Silicone N/A

1715 Small Block Ford .120" Thick Paper w/ Silicone N/A

Learn. Share. Experience.To stay informed about the newest RHS® products, view install videos, read customer reviews and keep up with the latest news from the automotive industry, visit www.cpgnation.com.

R A C I N G H E A D H E L P ™ 1 . 8 7 7 . 7 7 6 . 4 3 2 3

We Power The Aftermarket,

You Power Us!> Photo Gallery > Message Board> Tech Support > User Videos

28

Spark Plugs

Part # Description Size Seat

CHAMPION SPARK PLUGS82209 Projected Tip - Nickel Shell, Copper Core #S57YC 14mm, .708" Reach, 5/8" Hex Flat

82211 Cut Back Ground - Nickel Shell, Copper Core #V59C 14mm, .460" Reach, 5/8" Hex Tapered

82212 Cut Back Ground - Nickel Shell, Copper Core #V57C 14mm, .460" Reach, 5/8" Hex Tapered

82216 Projected Tip - Nickel Shell, Copper Core #V57YC 14mm, .450" Reach, 5/8" Hex Flat

82210 Projected Tip - Nickel Shell, Copper Core #V59YC 14mm, .708" Reach, 5/8" Hex Flat

82213 Fine Wire - Nickel Shell, Copper Core #C59 14mm, .750" Reach, 5/8" Hex Flat

82214 Fine Wire - Nickel Shell, Copper Core #C57 14mm, .750" Reach, 5/8" Hex Flat

82215 Projected Tip - Nickel Shell, Copper Core #C59YC 14mm, .750" Reach, 5/8" Hex Flat

ZEX™ SPARK PLUGS82003 Hyperformance - Nickel Shell, Copper Core 14mm, .708" Reach, 5/8" Hex Flat

82070 Power Tune - Nickel Shell, Copper Core 14mm, .750" Reach, 5/8" Hex Tapered

Available individually or in sets of 8

Spark Plugs

RHS® offers many application-specifi c spark plugs for our lineup of high perfor-mance aluminum and cast iron cylinder heads. For street performance applica-tions, ZEX™ High Performance Spark Plugs are offered, and for racing usage a specially-designed line of Champion spark plugs is available with a wide assort-ment of heat ranges.

The ZEX™ spark plugs feature Igniter Core™ Technology, which allows them to conduct electricity over fi ve times better than platinum and nearly three times better than iridium. This results in more horsepower-producing spark energy and greater detonation resistance than either of these materials. Champion, a great name in aftermarket spark plug design, has created a line of top performing rac-ing plugs for RHS®. These plugs incorporate Heat-Active™ alloy material for maxi-mum heat dissipation and conductivity to retain stable operating temperatures.

• Application-specifi c spark plugs de-signed for perfect RHS® compatibility and maximum performance

• ZEX™ spark plugs for street perfor-mance & Champion line for racing

• ZEX™ plugs feature Igniter Core Tech-nology™ for increased spark energy

• Assortment of heat ranges to tune for specifi c needs & engine combination

29

R A C I N G H E A D H E L P ™ 1 . 8 7 7 . 7 7 6 . 4 3 2 330

Part # Description Part # DescriptionBIG MOUTH THROTTLE BODY™

54092 92mm Throttle Body 54102 102mm Throttle Body

54095 92mm Throttle Body w/ TPS 54103 102mm Throttle Body w/ TPS

54020 Throttle Position Sensor

FAST™ Big Mouth Body™ (92mm or 102mm)

When it comes to improving performance, increased airfl ow is a key ingredient. Available in 92mm or 102mm diameters, the Big Mouth Throttle Body™ increases airfl ow through a series of in novative design changes and slightly enlarged throttle opening. Signifi cant testing and engineering was conducted to optimize cross-sec-tional fl ow and eliminate airfl ow turbulence, especially at part-throttle operation.

The throttle blade’s increased thickness elimi nates defl ection, especially in boost-ed applications. To improve throttle response, the blade pivot is offset, while the beefed up linkage and dual throttle spring mechanism ensure total throttle control.

Intake Manifolds

Modular Designw/ Removable Intake Runners

FAST™ LSXR™

102mm Intake Manifold

Designed for GM L92/LS3/LS7 engines using the latest RHS® design technology, the LSXR™ features a three-piece modular construction to allow easy disassembly & porting. Extensive testing led to a longer, less restrictive runner design, allowing re-moval of individual runners for modifi ca-tion. Dyno tests with a Big Mouth 102mm Throttle Body™ produced gains as large as 26+ horsepower & 25+ ft/lbs of torque at the fl ywheel.

Constructed from advanced polymer mate-rial, the LSXR™ is lighter, stronger and more heat resistant than comparable aluminum intakes. While it features a 102mm air inlet, it can be used with 90mm or 92mm throttle bodies. Other features include integrated nitrous bungs & perfect bolt-on fi tment, al-lowing use of factory accessories without clearance issues.

LS PORT IDENTIFICATION

Rectangle PortRaised Rectangle Port

Use Part #146202

Use Part #146102

LS7LSXR

™LS3L92LSXR

™

Part # Description Application

LSXR™ 102MM INTAKE MANIFOLD146102 102mm Intake Manifold* L92/LS3

146202 102mm Intake Manifold* LS7

146000 102mm Upper Shell L92/LS3/LS7

146001 102mm Lower Shell L92/LS3

146201 102mm Lower Shell LS7

146053 102mm Intake Manifold Replacement Runner Set L92/LS3

146253 102mm Intake Manifold Replacement Runner Set LS7

146020-KIT LS7 Fuel Rail Kit LS7

* Compatible with the 92mm or 102mm Big Mouth Throttle Body™


ToolsFor maximum effi ciency and ease-of-use, RHS® offers a mul-titude of tools to aid you in cylinder head installation and/or modifi cation. In addition to tools and measuring instruments, our simulation software will ensure that you fi nd the optimal performance package without the hassle of trial and error.

Part # Description

CYLINDER HEAD TOOLSPOW101330 14mm Bolt Style (Most Engines) TDC Stops: Head On

POW351015 Heavy-Duty Manual Valve Spring Compressor

POW351140 125cc x .2cc Pro Head CC Kit

POW351150 100cc x .2cc Pro Head CC Kit

POW351155 100cc x 1cc Pro Head CC Kit

POW351160 250cc x 1cc Pro Head CC Kit

POW351170 50cc X .1cc x .2cc Pro Head CC Kit

POW351319 Spring Seat Cutter 1.320" O.D.

POW351400 V-Style Aluminum Head Holders, Pair

POW351405 V-Style Steel Head Holders, Pair

POW735001 Valve Train Organizer - Valves, Springs & Retainers

POW735002 Valve Train Organizer - Rockers, Lifters & Pushrods

Part # Description

PUSHROD TOOLS7701-1 Hi-Tech™ Checking Pushrods

7705-1 Hi-Tech™ Master Checking Pushrod Kit

7900-1 Magnum Master Checking Pushrod Kit

7905-1 Magnum Checking Pushrods

Part # Description

ENGINE BLOCK TOOLS549106 LS Engine Main Cap Puller

Part # Description

ENGINE SIMULATION SOFTWARE186011 DeskTop Dyno 5™

181501 Dyno Sim 5™

181810 Dynomation 5™

DRAG STRIP VEHICLE SIMULATION SOFTWARE186401 DeskTop Drag 5™

181601 Drag Sim 5™

RACE VEHICLE SIMULATION SOFTWARE186301 DeskTop FastLap 5™

181701 FastLap Sim 5™

POW351150 & POW351405 shown.

Cylinder head not included.

Part # Description

ABRASIVESPOW351475 Cartridge Roll & Mandrel Assortment

POW351510 3 Piece Porting Mandrel Kit 1",4",8"

POW351700 Deluxe Cylinder Head Porting Kit

POW351705 Cartridge Roll Assortment

* A wide selection of Porting Burrs is also available. Call for details.

32

Merchandise

Show your support with RHS® merchandise – from apparel to banners to decals! All t-shirts are 100% cotton. The RacingHeadService.com T-shirts are available in white and gray, while the RHS® “Use Your Head” T-shirts are avail-able in black only. Also available is the RHS® hat, made from black twill with orange vents and an attractive RHS® logo embroidered on the front and the RHS® website on the adjust-able back band. One size fi ts all.

Or, you can show your support for RHS® by displaying our lightweight 3' x 8' fabric banner in your shop or a decal on your vehicle.

Part # Description

T-SHIRTSR635B RHS® Cap

R1011-SIZE RacingHeadService.com T-Shirt (White) (M-XXXL)

R1012-SIZE RacingHeadService.com T-Shirt (Gray) (M-XXL)

R1013-SIZE RHS® “Use Your Head” Logo T-Shirt (Black) (M-XXL)

BANNERS & DECALS100 RHS® Decal

408 RHS 3' x 8' Banner

Front

Front

Back

Back

TECHNICAL ASSISTANCE is available through a variety of sources:

Toll Free: 1.877.776.4323Local: 901.259.1134Website: www.racingheadservice.comEmail: [email protected] Hour Fax: 901.368.1951

Technical and Sales Personnel are available from 8:00 a.m. to 5:00 p.m. CST, Monday through Friday. RHS® is closed on weekends and legal holidays.

ST,

Frequently Asked Questions

Any ideas on what type of after-market headers I can run with RHS® Cylinder Heads?

In most cases, aftermarket headers are more than acceptable – they are en-couraged. They will typically improve the performance potential of any cyl-inder head (or engine, for that matter). However, RHS® cylinder heads feature spark plug locations that are optimized for better atomization to ensure maxi-mum performance. Therefore, it is im-portant to check for fi tment issues prior to ordering aftermarket headers – especially in unique, less common engine applications.

I’ve picked out a set of heads, any ideas on an intake manifold?

Look at velocity for low rpm torque, and fl ow for high rpm horsepower. Most carbureted performance intake manifolds are divided into two cat-egories – dual plane and single plane. Dual plane manifolds are better for low and midrange torque, and single plane manifolds (e.g., open plenum intake manifolds) emphasize mid and upper-rpm horsepower. In general, dual plane manifolds are better for street use; sin-gle plane manifolds are better for track use. Check with your intake manifold’s manufacturer for specifi c information. EFI manifolds differ in design charac-teristics, with improved midrange and top-end horsepower being common advantages of aftermarket EFI intakes.

Based on my cylinder head choice, what is the right pushrod size for my engine?

Some variables infl uencing pushrod length are engine block deck height, cyl-inder head dimensions, camshaft speci-fi cations, and many other characteristics that vary between individual engines. We recommend you measure using a simple, inexpensive pushrod length-checking to tool verify geometry, and contact us so we can set you up with the correct push-rods the fi rst time around.

What valve springs should I run with my cylinder heads?

Valve springs should be chosen based on compatibility with the camshaft you plan to use. Figure 1 lists general guidelines to help you decide which spring to run based on pressure requirements for different types of cams. Your valve springs must also have coil bind clearance of at least .060" over the camshaft’s peak lift. All fully assem-bled cylinder heads offered by RHS® display maximum valve lift in their tech sheets. Beehive™ springs typically have lighter open and seat pressures than conventional springs. The best way to choose a set of valve springs is to go with your cam manu-facturer’s recommendation after fi rst verifying that the valve springs will satisfy your cylinder head’s spring pocket diameter and installed height requirements.

Figure 1.

GENERAL VALVE SPRING PRESSURE RECOMMENDATIONS*

Camshaft Seat Pressure Open Pressure

Hydraulic & Solid Flat Tappet 100-130+ lbs. 270-350+ lbs.

Hydraulic Roller 105-135+ lbs. 280-350+ lbs.

Solid Roller (Street Pattern) 150-180+ lbs. 450-600+ lbs.

Solid Roller (Race Pattern) 190-300+ lbs. 600-1000+ lbs.

* General guideline only – consult with your camshaft manufacturer for exact valve spring recommendations, or contact RACING

HEAD HELP™ at (877)776-4323 to verify valve spring specifi cation based on application. RHS® assumes no liability for engine

damage due to improperly chosen valve springs.

What kind of camshaft should I run with my new cylinder heads?

Figure 2 lists a “ballpark” range of camshaft durations to consider based on the intake runner volume of various RHS® cylinder heads. Unless you run a high valve lift (above .550") camshaft with 220 or 235cc heads, you may not realize any performance advantage over cylinder heads with smaller intake runners. We do not make recommendations based on advertised duration because of the various rating methods used by cam manufacturers, which makes for poor camshaft comparison. Remember – this is a general guideline. Your intended application or the advice of your engine builder should always take precedence when it comes to cam selection on an individual basis.

Cubic Inches Intake Runner Volume .050" Camshaft Duration

SMALL BLOCK - SMALL BORE/SHORT STROKEUp to 350 170-180cc 210-225°

302-350 200-210cc 215-235°

347-400+ 215-220cc 230-245°

383-421+ 235cc 240°+

SMALL BLOCK - LARGE BORE/LONG STROKEUp to 350 180cc 210-225°

302-350 200-210cc 225-235°

347-400+ 215-220cc 230-245°

383-421+ 235cc 240°+

BIG BLOCK CHEVROLET468-500+ 320cc 250°+

500-565+ 360cc 275°+

* General recommendation only - not meant to replace other methods of camshaft selection. Camshaft/head recommen-dation “up to 350c.i.” should also be taken to include 351W and other Small Block Ford engines.

Figure 2.

CAMSHAFT GUIDELINES BASED ON INTAKE RUNNER VOLUME*

33

Frequently Asked Questions Cont.

Basic Engine Formulas

Compression Ratio = Cylinder + Chamber Volume

Chamber Volume

Chamber Volume = Cylinder Volume

Compression Ratio - 1.0

Displacement Ratio = Cylinder Volume

Chamber Volume

Piston Speed in FPM = 2 x Stroke in Inches x RPM

12

RPM = Piston Speed in FPM x 6

Stroke in Inches

Chamber Volume = π

x Bore2 x Stroke 4( )

Displacement = π

x Bore2 x Stroke x Number of Cylinders 4( )

Stroke = π

x Bore2 x Number of Cylinders 4

Displacement

( )

( )Bore = π

x Stroke x Number of Cylinders 4

Displacement

( )

π = 3.1415927 π

= 0.7853982 4

.006" off per cc, Angle Mill .0078" off per cc

Amt. To Mill = New Disp. Ratio - Old Disp. Ratio

x Stroke New Disp. Ratio x Old Disp. Ratio( )

Can you tell me if I have enough piston-to-valve clearance based on my engine data? Where do rocker arm ratios fi gure into all of this?

Piston-to-valve clearance varies between individual engines. Not checking it could lead to your camshaft having more lift than clearance, which can bend your valves, or worse, punch holes in your pistons – necessitating engine teardown or even a ground-up engine replacement. Write down your clearance once you’ve measured it, so if you decide to swap cams, some easy math can tell you if you have enough clear-ance. Measurement needs to be performed again if engine modifi cation occurs, such as swapping blocks or heads, machining deck surfaces or changing head gaskets. Refer to your existing measurement to verify fi t if you swap to a higher lift cam or change to a higher rocker arm ratio.

The following equations help explain the effect rocker arm ratio has on valve lift. As an example, we look at a common rocker swap: Small Block Chevy – switching from the fac-tory 1.5-1.52 ratio to a 1.6 ratio. Assuming a .500” lift cam-shaft (based on 1.5 ratio); we fi rst need to calculate lobe lift. The equation is as follows:

Valve Lift / Rocker Ratio = Lobe Lift

Plugging in the numbers gives us: .500”/1.5 = .333” lobe lift. Rearranging the equation gives us our gross valve lift with the new rocker ratio:

Lobe Lift x New Rocker Ratio = Valve Lift

Inserting the cam and rocker specs gives us .333 X 1.6=.534” – a substantial difference in lift. Many people say “switching to a 1.6 from a 1.5 gives .030” more lift!” This is true in some cases, but this number is a ratio – not a constant. Do not assume lift increase will be any set number. Do the math, re-cord the numbers and verify that you have clearance. You’ll never have to worry about putting a valve through your brand new forged racing pistons!

* If running a split pattern cam with a different intake and exhaust lobe lifts, do the equation twice (once for each lobe) to accurately calculate your gross valve lift.

34

The following equations explain the basic engine measurements needed for more effective cylinder head selection and compatibility. Here, π is used as a mathematical constant that represents the ratio of the bore’s circumference to its diameter.

Technical & Sales Personnel are available from 8:00 a.m. to 5:00 p.m. CST, Monday through Friday. RHS® is closed on weekends & legal holidays.

CYLINDER HEADSPECIFICATIONS & RELATED PARTS REFERENCE GUIDE

In this section, RHS® provides

you with a comprehensive guide

to fi nding the ideal parts for your

cylinder head assembly. And for

bare heads, we provide crucial

information to help you match

the proper cylinder heads with

your performance engine.

36

Part # Series Confi g. Material IntakeRunners Chambers Spark

Plugs Valve Train Max Lift AssemblyKit Part #

In. Valve Part # In. Valve Size Ex. Valve

Part # Ex. Valve Size

SMALL BLOCK CHEVY CYLINDER HEADS

12407-01 Pro Torker Vortec Cast Iron 170cc 64cc Straight Flat Tappet .560" N/A 6014 1.940" X 11/32" +.100'' Long 6016 1.500" X 11/32"

+.100'' Long

12407-02 Pro Torker Vortec Cast Iron 170cc 64cc Straight Hyd. Roller .600" N/A 6014 1.940" X 11/32" +.100'' Long 6016 1.500" X 11/32"

+.100'' Long

12410-01 Pro Torker Vortec Cast Iron 170cc 64cc Straight Flat Tappet .560" 12972-01 6001 2.020'' x 11/32'' +.100'' Long 6002 1.600" x 11/32

+ .100" Long

12410-02 Pro Torker Vortec Cast Iron 170cc 64cc Straight Hyd. Roller .600" 12987-01 6001 2.020'' x 11/32'' +.100'' Long 6002 1.600" x 11/32

+ .100" Long

12041-01 Pro Action 23° Aluminum 180cc 72cc Straight Flat Tappet .560" 12972-01 6001 2.020" x 11/32"+ .100" Long 6002 1.600" x 11/32

+ .100" Long

12041-02 Pro Action 23° Aluminum 180cc 72cc Straight Hyd. Roller .600" 12987-01 6001 2.020" x 11/32"+ .100" Long 6002 1.600" x 11/32

+ .100" Long

12042-01 Pro Action 23° Aluminum 180cc 72cc Angle Flat Tappet .560" 12972-01 6001 2.020" x 11/32"+ .100" Long 6002 1.600" x 11/32

+ .100" Long

12042-02 Pro Action 23° Aluminum 180cc 72cc Angle Hyd. Roller .600" 12987-01 6001 2.020" x 11/32"+ .100" Long 6002 1.600" x 11/32

+ .100" Long


+ .100" Long


+ .100" Long


+ .100" Long


+ .100" Long


+ .100" Long


+ .100" Long


+ .100" Long


+ .100" Long


+ .100" Long


+ .100" Long


+ .100" Long


+ .100" Long


+ .100" Long


+ .100" Long


+ .100" Long


+ .100" Long


+ .100" Long


+ .100" Long


+ .100" Long


+ .100" Long


+ .100" Long


+ .100" Long


+ .100" Long


+ .100" Long


+ .100" Long


+ .100" Long


+ .100" Long


+ .100" Long

12301-01 Pro Action 23° Cast Iron 180cc 72cc Straight Flat Tappet .560" 12972-01 6001 2.020" x 11/32"+ .100" Long 6002 1.600" x 11/32

+ .100" Long

12301-02 Pro Action 23° Cast Iron 180cc 72cc Straight Hyd. Roller .600" 12987-01 6001 2.020" x 11/32"+ .100" Long 6002 1.600" x 11/32

+ .100" Long

ASSEMBLED CYLINDER HEADS - APPLICATION GUIDE

37

Spring Part #

Ret.Part #

LockPart #

Seal Part #

Guide PlatePart #

Spring Locator Part # Spark Plug Specs

Spark Plug Recommended GasketsStud Girdle

ZEX / Champion Intake Exhaust Valve Cover

972 743 601 529 4808 4696 14mm, .450" reach, tapered N/A / V57C 1707 1708 1709 4002 Spring Loaded

987 740 611 529 4808 4771 14mm, .450" reach, tapered N/A / V57C 1707 1708 1709 4003 Spring Loaded

972 743 601 529 4808 4696 14mm, .708" reach, tapered 82070 / S57YC 1707 1708 1709 4004 Spring Loaded


972 743 601 529 4808 4696 14mm, .750" reach, gasketed 82003 / C57YC 1707 1708 1709 4004 Spring Loaded



































38





SMALL BLOCK CHEVY CYLINDER HEADS

12302-01 Pro Action 23° Cast Iron 180cc 72cc Angle Flat Tappet .560" 12972-01 6001 2.020" x 11/32" + .100" Long 6002 1.600" x 11/32

+ .100" Long

12302-02 Pro Action 23° Cast Iron 180cc 72cc Angle Hyd. Roller .600" 12987-01 6001 2.020" x 11/32" + .100" Long 6002 1.600" x 11/32

+ .100" Long

12303-01 Pro Action 23° Cast Iron 200cc 72cc Straight Flat Tappet .560" 12972-01 6001 2.020" x 11/32" + .100" Long 6002 1.600" x 11/32

+ .100" Long

12303-02 Pro Action 23° Cast Iron 200cc 72cc Straight Hyd. Roller .600" 12987-01 6001 2.020" x 11/32" + .100" Long 6002 1.600" x 11/32

+ .100" Long


+ .100" Long


+ .100" Long


+ .100" Long


+ .100" Long


+ .100" Long


+ .100" Long


+ .100" Long


+ .100" Long


+ .100" Long


+ .100" Long


+ .100" Long


+ .100" Long


+ .100" Long


+ .100" Long


+ .100" Long


+ .100" Long


+ .100" Long


+ .100" Long


+ .100" Long


+ .100" Long


+ .100" Long


+ .100" Long


+ .100" Long


+ .100" Long


+ .100" Long


+ .100" Long


+ .100" Long


+ .100" Long


+ .100" Long


+ .100" Long


+ .100" Long


+ .100" Long


+ .100" Long

12336-02 Pro Action 23° Cast Iron 220cc 50cc Angle Hyd. Roller .600" 12987-01 6001 2.020"x 11/32" + .100" Long 6002 1.600" x 11/32

+ .100" Long

39

Spring Part #

Retainer Part #

LockPart #

Seal Part #

Guide PlatePart #














































BIG BLOCK CHEVY CYLINDER HEADS

11011-02 Pro Action 24° Aluminum 320cc 119cc Angle Hyd. Roller .600" 11924-01 6022 2.250" x 11/32" + .250" Long 6023 1.880" x 11/32"

+ .100" Long

11011-03 Pro Action 24° Aluminum 320cc 119cc Angle Mech. Roller .750" 11991-01 6022 2.250" x 11/32" + .250" Long 6023 1.880" x 11/32"

+ .100" Long

11012-02 Pro Action 24° Aluminum 360cc 119cc Angle Hyd. Roller .600" 11924-02 6021 2.300" x 11/32" + .250" Long 6023 1.880" x 11/32"

+ .100" Long

11012-03 Pro Action 24° Aluminum 360cc 119cc Angle Mech. Roller .750" 11991-02 6021 2.300" x 11/32" + .250" Long 6023 1.880" x 11/32"

+ .100" Long

11301-01 Pro Action 24° Cast Iron 320cc 119cc Angle Hyd. Roller .600" 11924-01 6022 2.250" x 11/32" + .250" Long 6023 1.880" x 11/32"

+ .100" Long

11301-02 Pro Action 24° Cast Iron 320cc 119cc Angle Mech. Roller .750" 11991-01 6022 2.250" x 11/32" + .250" Long 6023 1.880" x 11/32"

+ .100" Long

11302-01 Pro Action 24° Cast Iron 360cc 119cc Angle Hyd. Roller .600" 11924-02 6021 2.300" x 11/32" + .250" Long 6023 1.880" x 11/32"

+ .100" Long

11302-02 Pro Action 24° Cast Iron 360cc 119cc Angle Mech. Roller .750" 11991-02 6021 2.300" x 11/32" + .250" Long 6023 1.880" x 11/32"

+ .100" Long

SMALL BLOCK FORD CYLINDER HEADS

35010-01 Pro Action 20° Aluminum 160cc 58cc Angle Flat Tappet .560" 35972-01 6014 1.940" X 11/32" +.100" Long 6002 1.600" X 11/32"

+ .100" Long

35010-02 Pro Action 20° Aluminum 160cc 58cc Angle Hyd. Roller .600" 35987-01 6014 1.940" X 11/32" +.100" Long 6002 1.600" X 11/32"

+ .100" Long


+ .100" Long


+ .100" Long


+ .100" Long


+ .100" Long


+ .100" Long


+ .100" Long


+ .100" Long


+ .100" Long


+ .100" Long


+ .100" Long


+ .100" Long


+ .100" Long


+ .100" Long


+ .100" Long

35301-01 Pro Action 20° Cast Iron 180cc 64cc Angle Flat Tappet .560" 35972-02 6001 2.020" X 11/32" +.100" Long 6002 1.600" X 11/32"

+ .100" Long

35301-02 Pro Action 20° Cast Iron 180cc 64cc Angle Hyd. Roller .600" 35972-02 6001 2.020" X 11/32" +.100" Long 6002 1.600" X 11/32"

+ .100" Long


+ .100" Long


+ .100" Long


+ .100" Long


+ .100" Long


+ .100" Long


+ .100" Long


+ .100" Long


+ .100" Long


+ .100" Long


+ .100" Long


40

Spring Part #

Retainer Part #

LockPart #

Seal Part #

Guide PlatePart #




924 741 611 529 4806 4771 14mm, .750" reach, gasketed 82003 / C57YC 1710 1711 1712 n/a








972 743 601 529 4808 4696 14mm, .750" reach, gasketed 82003 / C57YC 1713 1714 1715 4015
















972 743 601 529 4808 4696 14mm, .460" reach, tapered N/A / V57C 1713 1714 1715 4015












41

Part # Series Material ValveAngles

IntakeRunner

ExhaustRunner

Combustion Chamber Spark Plugs Intake Valve Exhaust Valve Valve Length Application

SMALL BLOCK CHEVY CYLINDER HEADS12400 Pro Torker Cast Iron 23° 170cc 67cc 76cc Straight 1.940" 1.500" Stock 327-350c.i.

12401 Pro Torker Cast Iron 23° 170cc 67cc 76cc Straight 2.020" 1.600" Stock 327-383c.i.



12407 Pro Torker Cast Iron 23° 170cc 67cc 64cc Straight 1.940" 1.500" .100” Long 327-350c.i.

12410 Pro Torker Cast Iron 23° 170cc 67cc 64cc Straight 2.020" 1.600" .100" Long 327-383c.i.

12317 Pro Action Cast Iron 23° 180cc 74cc 64cc Straight 2.020" 1.600" .100" Long 262-350c.i.

12318 Pro Action Cast Iron 23° 180cc 74cc 64cc Angle 2.020" 1.600" .100" Long 262-350c.i.



















12052 Pro Action Aluminum 23° 180cc 74cc 64cc Straight 2.020" 1.600" .100" Long 262-350c.i.

12053 Pro Action Aluminum 23° 180cc 74cc 64cc Angle 2.020" 1.600" .100" Long 262-350c.i.
















12802 Pro Action Cast Iron 21° 220cc 100cc 64cc Angle N/A N/A .100" Long 350-421c.i.





12326 Pro Elite Cast Iron 23° 228cc 82cc 69cc Straight 2.055" 1.600" .100" Long 383-421c.i.

12327 Pro Elite Cast Iron 23° 228cc 82cc 69cc Angle 2.055" 1.600" .100" Long 383-421c.i.

12328 Pro Elite Cast Iron 23° 240cc 85cc 53cc Straight 2.100" 1.625" .100" Long 305-383c.i.

12329 Pro Elite Cast Iron 23° 240cc 85cc 53cc Angle 2.100" 1.625" .100" Long 305-383c.i.

BARE CYLINDER HEADS - APPLICATION GUIDE

42

If you have any questions or would like to start an online discussion about an RHS® product,

check out our Product Support Forum at www.cpgnation.com/forum/rhs-product-support.html

For the latest advancements in RHS®

cylinder head and engine block tech-nology, go to www.RacingHeadService.com. Here, you’ll fi nd detailed informa-tion about our new and existing prod-ucts, contact information for technical assistance and an easy-to-use online store for one-stop shopping. Stay up-to-date and ahead of the competition with the RHS® website.

For the latest advancements in RHS®

cylinder head and engine block tech-nology, go to www.RacingHeadService.com. Here, you’ll fi nd detailed informa-tion about our new and existing prod-ucts, contact information for technicalassistance and an easy to use online

Part # Series Material Valve Angles

IntakeRunner

ExhaustRunner

Combustion Chamber Spark Plugs Intake Valve Exhaust Valve Valve Length Application

BIG BLOCK CHEVY CYLINDER HEADS

11301 Pro Action Cast Iron 24° 320cc 135cc 119cc Angle 2.250" 1.880".250" Long Intake

.100" Long Exhaust396-632c.i.

11302 Pro Action Cast Iron 24° 320cc 135cc 119cc Angle 2.300" 1.880".250" Long Intake


11011 Pro Action Aluminum 24° 320cc 135cc 119cc Angle 2.250" 1.880".250" Long Intake


11012 Pro Action Aluminum 24° 320cc 135cc 119cc Angle 2.300" 1.880".250" Long Intake


11034 Pro Elite Aluminum 24° 339cc 135cc 121cc Angle 2.250" 1.880".250" Long Intake


11038 Pro Elite Aluminum 24° 376cc 135cc 121cc Angle 2.300" 1.880".250" Long Intake


SMALL BLOCK CHRYSLER CYLINDER HEADS20300 MA-X Cast Iron 18° 179cc 62cc 67cc Angle 1.920" 1.625" Stock Length 318-415c.i.

20301 LA-X Cast Iron 18° 179cc 62cc 67cc Angle 1.920" 1.625" Stock Length 318-415c.i.

SMALL BLOCK FORD CYLINDER HEADS35304 Pro Action Cast Iron 20° 180cc 66cc 58cc Angle 2.020" 1.600" .100" Long 289-351c.i.














35020 Pro Elite Aluminum 20° 205cc 79cc 62cc Angle 2.055" 1.600" .100" Long 289-351c.i.

35025 Pro Elite Aluminum 20° 221cc 79cc 62cc Angle 2.080" 1.625" .100" Long 289-351c.i.

BARE CYLINDER HEADS - APPLICATION GUIDE

www.racingheadservice.com

43

Limited Warranty

Racing Head Service® (RHS®) warrants that all of its products are free from defects in material and workmanship, for a period of one year. The warranty period begins from the date of purchase. We recommend that you keep your invoice or receipt because proof of purchase date is required.

This limited warranty shall only cover the original purchaser.

The warranty does not include the following:

A. Any product that has been physically altered, improperly installed or maintained.

B. Any product used in an improper application, abused or not used in connection with the proper parts.

C. Any product that is defective due to neglect, unauthorized repair or as the result of an accident.

There is no implied warranty of merchantability or fi tness for a particular purpose. The RHS® obligation under this warranty is limited to the re-pair or replacement of its products. There are no warranties that extend beyond the description on the face of this warranty. RHS® will not be responsible for incidental, consequential, indirect, special or exemplary damages or any third-party claims or property damage or personal dam-ages resulting from use of its products. If there is by law an implied war-ranty of merchantability and/or fi tness, it is limited to the warranty terms set forth above.

This limited warranty gives you specifi c legal rights, and you may have other legal rights which vary from state to state or country to country.

MAKING A WARRANTY CLAIM

A. Contact RHS® within the warranty period at 3416 Democrat Rd, Memphis, TN 38118 or by phone at (901) 259-1134 Monday - Friday 8:00 a.m. to 5:00 p.m. CST. Before any merchandise is returned for warranty, please contact RHS® to obtain a Return Material Authoriza-tion (RMA). RHS® will need a specifi c and detailed description of your problem, along with the type of product and information about you for contact purposes.

B. Send the merchandise, freight prepaid and insured to RHS® at the ad-dress below, along with dated proof of purchase. All merchandise returned for warranty must be accompanied by an RMA. The purchaser must pre-pay transportation charges for return of defective parts. RHS® is not liable for any taxes or duties associated with international shipments.

Note: Products must be inspected prior to replacement.

RACING HEAD SERVICE®

3416 Democrat Road • Memphis, TN 38118www.racingheadservice.com

RHS® is a proud member of the

COMP Performance Group™ family.Other CPG companies include:

www.compperformancegroup.com

compcams.com1.800.999.0853

zex.com1.888.817.1008

tciauto.com1.888.776.9824

inglese.com1.866.450.8089

powerhouseproducts.com1.800.872.7223

quartermasterusa.com1.888.258.8241

proracingsim.com901.259.2355

fuelairspark.com1.877.334.8355

44

Delivering Power By Design™

Racing Head Service® - the legendary innovator of airfl ow technology – offers the ultimate in cylin-der head, engine block and intake manifold per-formance. Utilizing the resources of the industry leading COMP Performance Group™ engineering and development team and the most sophis-ticated engine technology in the performance aftermarket, RHS® has re-established itself as a leader in airfl ow design.

THE LEGACY OF INNOVATION

Founded in 1967, Racing Head Service® began exclusively as a manufacturer of racing cylinder heads. Over the years, RHS® grew into an inte-grated racing company, offering complete turn-key engines and race car parts via mail order. Always an innovator, RHS® was among the fi rst to offer “crate engines” and mail order parts, es-tablishing its reputation as a leader.

With innovative cylinder head designs and port-ing techniques, the company became a perfor-mance icon during the 1970’s and ’80s in both circle track and drag racing competition.

In 1976, the RHS® management team, recogniz-ing the direct performance link between cylinder heads and camshafts, launched a new compa-ny – Competition Cams®. Throughout the ‘80s, RHS® and COMP Cams® became an amazing one-two punch for everything to do with racing. From their headquarters in Memphis, Tennessee, the two dominated NHRA and short track com-petition with their racing heads, valve train com-ponents and engines.

Today, COMP Cams® has grown to be the domi-nant force in valve train technology and an estab-lished leader in the automotive aftermarket.

THE RETURN OF A LEGEND

As the company that started it all, RHS® is proud to re-emerge as a member of the COMP Perfor-mance Group™ with the industry’s largest and most advanced airfl ow technology team. By combining knowledge with valve train experts at COMP Cams® for more comprehensive R&D ef-forts, our engineers have been able to develop some of the highest fl owing, best performing cyl-inder heads and intake manifolds in the perfor-mance aftermarket.

And recently, RHS® has designed the most ad-vanced engine block ever built for GM LS en-gines. These developments have helped usher in a new era of performance engine technology . . . and you are there to witness the event!

45

RHS5-2009V: 1.0

© Copyright 2009 by COMP Performance Group™

Racing Head Service™

3416 Democrat Rd. Memphis, Tennessee 38118

P: 901-259-1134 • F: 901-368-1951

RHS® cylinder heads and blocks are the product of winning perfor-mance, superior engineering and unmatched quality. All RHS® cyl-inder head and engine block models feature patented Clean Cast Technology™, a revolutionary process that eliminates casting fl aws and the need for expensive fi nish machining prior to use. This inno-vative development sequence also leads to more power – right out of the box. With advanced engineering technology and more standard features than any competing product, every RHS® engine block or cylinder head is designed, engineered and manufactured to deliver Power By Design™.

Available @

PRO ELITE - Performance Wholesale

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