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Thumpr™ Hydraulic Flat Tappet CamshaftsNow available for hydraulic flat tappet applications, COMP Cams® new Thumpr™ Camshafts are the hottest cam seriesto hit the streets in more than a decade. Street rodders and muscle car enthusiasts just can’t get enough of the incred-ible exhaust sound and equally impressive performance delivered by these innovative camshafts.

Applying a new camshaft design concept originally created for sports car endurance racing, the COMP Cams® engineer-ing team incorporated early exhaust valve opening, long exhaust duration and a generous amount of intake and exhaustoverlap to maximize your engine’s nasty-idling characteristics without negatively impacting power output or streetability.

• Available for carbureted Small & Big Block Chevy, Ford 351 Windsor and Chrysler Small Block engines

• Long exhaust duration & other design characteristics produce a “serious power” sound

• Excellent hp gains & broad torque curve deliver real seat of the pants performance

APPLICATION / CAMSHAFTSVALVE

SETTINGIN. EX.

RPMOPERATING

RANGE

CAMSHAFTPART

NUMBER

CAMGRIND

NUMBER

DURATIONADVERTISED

IN. EX.@ .050”IN. EX.

LOBESEP.

ANGLE

VALVE LIFTW/ 1.5 ROCKER

IN. EX.

TTHHUUMMPPRR™™ HHYYDD.. FFLLAATT TTAAPPPPEETT CCAAMMSSHHAAFFTTSS FFOORR SSMMAALLLL BBLLOOCCKK CCHHEEVVYY 226622--440000,, ''5555--''9988 NNOONN--FFAACCTTOORRYY BBLLOOCCKK

THUMPR™ – High performance street, stock converter ok, best with 2000+ converter and Hyd Hyd 2000 to 5800 12-600-4 279THF7 279 297 227 241 .479 .465 107°gears, choppy/thumping idle

MUTHA' THUMPR™ – High performance street/strip, needs 9:1 CR, 2500+ stall, intake, Hyd Hyd 2200 to 6100 12-601-4 287THR7 287 305 235 249 .489 .476 107°gears, and headers, rough idleBIG MUTHA' THUMPER™ – Street/strip, needs 9.5:1 CR, 2800+ stall, intake, gears, & Hyd Hyd 2500 to 6400 12-602-4 295THR7 295 313 243 257 .500 .486 107°headers, very rough idle

APPLICATION / CAMSHAFTSVALVE

SETTINGIN. EX.

RPMOPERATING

RANGE

CAMSHAFTPART

NUMBER

CAMGRIND

NUMBER

DURATIONADVERTISED

IN. EX.@ .050”IN. EX.

LOBESEP.

ANGLE

VALVE LIFTW/ 1.7 ROCKER

IN. EX.

TTHHUUMMPPRR™™ HHYYDD.. FFLLAATT TTAAPPPPEETT CCAAMMSSHHAAFFTTSS FFOORR BBIIGG BBLLOOCCKK CCHHEEVVYY 339966--445544,, MMAARRKK IIVV ''6655--''9966

THUMPR™ – High performance street, stock converter ok, best with 2000+ converter and Hyd Hyd 1800 to 5600 11-600-4 279THF7 279 297 227 241 .498 .483 107°gears, choppy/thumping idle

MUTHA' THUMPR™ – High performance street/strip, needs 9:1 CR, 2400+ stall, intake, Hyd Hyd 2000 to 5900 11-601-4 287THR7 287 305 235 249 .510 .495 107°gears, and headers, rough idleBIG MUTHA' THUMPER™ – Street/strip, needs 9.5:1 CR, 2800+ stall, intake, gears, & Hyd Hyd 2300 to 6200 11-602-4 295THR7 295 313 243 257 .522 .507 107°headers, very rough idle

Pro Plasma™ NitridingCOMP Cams® is the only aftermarket valve train com-pany in America that owns and operates a Pro Plasma™

Nitriding Service, having invested in this leading edgetechnology process. Nitriding is recognized by metal-lurgists worldwide as the best way to increase thehardness and lubricity of flat tappet cams to enhancebreak-in and durability. Pro Plasma™ Nitriding is apatented process that uses pulsed nitrogen plasma toinfuse nitrogen ions into the steel – strengthening andfortifying the metal on a molecular level.

Now available for any COMP Cams® flat tappetcamshaft or lifters, this added service has been provento deliver unmatched wear resistance and uniformcase hardness. With the Pro Plasma™ Nitriding Servicelocated in our Memphis, TN manufacturing facility,COMP Cams® is able to offer fast turnaround timewhile once again proving our commitment to deliveringthe most advanced valve train products available.Don’t get blinded by shiny surface finishing or heat-treating – nitriding has been race-proven around theworld and documented to deliver superior results.

APPLICATION / CAMSHAFTSVALVE

SETTINGIN. EX.

RPMOPERATING

RANGE

CAMSHAFTPART

NUMBER

CAMGRIND

NUMBER

DURATIONADVERTISED

IN. EX.@ .050”IN. EX.

LOBESEP.

ANGLE

VALVE LIFTW/ 1.6 ROCKER

IN. EX.

TTHHUUMMPPRR™™ HHYYDD.. FFLLAATT TTAAPPPPEETT CCAAMMSSHHAAFFTTSS FFOORR SSMMAALLLL BBLLOOCCKK FFOORRDD 335511 WWIINNDDSSOORR,, ''6699--''9955**

THUMPR™ – High performance street, stock converter ok, best with 2000+ converter and Hyd Hyd 2000 to 5800 35-600-4 279THF7 279 297 227 241 .490 .475 107°gears, choppy/thumping idle

MUTHA' THUMPR™ – High performance street/strip, needs 9:1 CR, 2500+ stall, intake, Hyd Hyd 2200 to 6100 35-601-4 287THR7 287 305 235 249 .501 .486 107°gears, and headers, rough idleBIG MUTHA' THUMPER™ – Street/strip, needs 9.5:1 CR, 2800+ stall, intake, gears, & Hyd Hyd 2500 to 6400 35-602-4 295THR7 295 313 243 257 .512 .498 107°headers, very rough idle*TECH NOTE: Fits all Small Block Ford Windsor '62-'95 – those that came with factory hydraulic roller valve trains and those that came

with flat tappet valve trains; utilizes 5.0/351W firing order: 1-3-7-2-6-5-4-8. Also compatible with Ford 221-302 '63-’95,please consult CAM HELP® technician for special installation instructions.

APPLICATION / CAMSHAFTSVALVE

SETTINGIN. EX.

RPMOPERATING

RANGE

CAMSHAFTPART

NUMBER

CAMGRIND

NUMBER

DURATIONADVERTISED

IN. EX.@ .050”IN. EX.

LOBESEP.

ANGLE

VALVE LIFTW/ 1.5 ROCKER

IN. EX.

TTHHUUMMPPRR™™ HHYYDD.. FFLLAATT TTAAPPPPEETT CCAAMMSSHHAAFFTTSS FFOORR SSMMAALLLL BBLLOOCCKK CCHHRRYYSSLLEERR 227733--336600,, ''6644--''9922** ((LLOONNGG SSNNOOUUTT))

THUMPR™ – High performance street, stock converter ok, best with 2000+ converter and Hyd Hyd 2000 to 5800 20-600-4 279THF7 279 297 227 241 .486 .473 107°gears, choppy/thumping idle

MUTHA' THUMPR™ – High performance street/strip, needs 9:1 CR, 2500+ stall, intake, Hyd Hyd 2200 to 6100 20-601-4 287THR7 287 305 235 249 .497 .483 107°gears, and headers, rough idleBIG MUTHA' THUMPER™ – Street/strip, needs 9.5:1 CR, 2800+ stall, intake, gears, & Hyd Hyd 2500 to 6400 20-602-4 295THR7 295 313 243 257 .507 .494 107°headers, very rough idle*TECH NOTE: These cams are only for use with the single shaft mount rocker arm cylinder head; they are not compatible with the '92-'02

Magnum head pedestal or stud mount rocker arms

02

DESCRIPTION PART NO. Camshaft Nitriding 1-111-1

GM ZZ4 Power PackagesGM’s ZZ4 engine has great performance potential straight out of the crate; but in today’s realm of high performanceengines, 350 hp is not exactly something you brag to your buddies about. COMP Cams® is dedicated to producing topquality components that draw the most power and torque from any engine platform. As a result of this effort, COMPhas designed bolt-on GM ZZ4 power packages that dramatically improve the horsepower, torque and “fun factor” asso-ciated with this engine.

Test results prove that carefully selected combinations of COMP Performance Group™ products can transform yourstock ZZ4 into a small block powerhouse with bullet-proof reliability. Each COMP Cams® Performance Package hasbeen dyno tested in-house to demonstrate real world, repeatable results. After completing Stage 1 of the five perform-ance packages, select the level of horsepower you desire from the four remaining stages to deliver dependable,streetable power.

*All tests were performed on a brand new GM ZZ4 engine which achieved baseline performance of 344 hp @ 5300 rpm and 390 lb./ft. @4300 rpm – both figures slightly less than the factory ratings. Our dyno tests utilized a Demon 650 cfm carburetor, 1 3/4–inch primarytube headers and the factory dual plane intake manifold (performance dual plane intake utilized for Stages 2-5 to supply adequate airflow).

compcams.com | CAM HELP® 1.800.999.0853

Sta

ge 1

Sta

ge 2

Sta

ge 3

Sta

ge 4

Sta

ge 5

*Use .015" thick head gasket to retain stock ZZ4 compression ratio

Roller Rocker Arm and Pushrod Package– Pro Magnum Rocker Arms™ #1301-16– Magnum Pushrods #7608-16

Thumpr™ Camshaft & Beehive™ Valve Spring Package– Thumpr™ Camshaft #08-600-8– Beehive™ Valve Springs #26918-16– Retainer Set #787-16 (Steel) or #788-16 (Titanium)

Mutha Thumpr™ Camshaft & Beehive™ Valve Spring Package

– Mutha Thumpr™ Camshaft #08-601-8– Beehive™ Valve Springs #26918-16– Retainer Set #787-16 (Steel) or #788-16 (Titanium)

RHS™ 180 CC Cylinder Head Package w/ Thumpr™ Camshaft

– RHS™ Pro Action™ Cylinder Heads #12318-05Cast Iron 180 CC Runner/64 CC Chamber*

– Thumpr™ Camshaft #08-600-8

RHS™ 180 CC Cylinder Head Package w/ Mutha Thumpr™ Camshaft– RHS™ Pro Action™ Cylinder Heads #12318-05

Cast Iron 180 CC Runner/64 CC Chamber*– Mutha Thumpr™ Camshaft #08-601-8

360 HP / 400 TQ,+16 HP / 10 TQ

399 HP / 410 TQ,+55 HP / 20 TQ

408 HP / 410 TQ,+64 HP / 20 TQ

427 HP / 426 TQ,+83 HP / 36 TQ

436 HP / 424 TQ,+92 HP / 34 TQ

High Load Ford 2 & 3 Valve Beehive™ Valve SpringsCOMP Cams® has created the industry’s most technologically advanced valve spring for Ford 4.6L & 5.4L, 2 & 3 valveengines with aggressive performance upgrades. The COMP Cams® engineering team designed the H/L Ford 2 & 3 ValveBeehive™ Valve Springs with a seat pressure of 120 lbs and 275 lbs open pressure, providing correct valve spring pres-sure for demanding high boost supercharger/turbocharger applications.

• Ideal for high boost & aggressive camshaft profiles

• Drop-in replacement for Ford 2 & 3 valve engines

• Feature 120 lbs on the seat and 275 lbs openpressure to handle aggressive hp upgrades

• Super Clean™ wire material & superior design pro-cesses yield increased durability & performance

• Beehive™ technology reduces harmonics & valvetrain mass; delivers extended usable rpm range

PART NO. SEAT LOAD OPEN LOAD COIL BIND RETAINER

26918-16 125 lbs @ 1.800" 367 lbs @ 1.150" 1.100" #761, #774, #783, #787, (Steel)#762, #772, #788 (Titanium)

*Springs are available as singles (-1) and sets of (-16)

Redesigned #26918 Beehive™ Valve SpringsThe industry’s best selling Beehive™ Valve Spring has now been totally redesigned for significantly improved perform-ance and durability. Realizing that today’s most aggressive late model engines (especially GM Gen III/LS engines) haveevolved beyond the limitations of the original #26918 design, the COMP Cams® engineering team has developed thenext generation #26918 Beehive™ Valve Spring.

Featuring many of the same manufacturing processes as our exotic NASCARrestrictor plate and Daytona Prototype Beehive™ Valve Springs, the new#26918 offers an extended .625" lift capability and added spring pressureto control today’s aggressive camshaft designs. These new valve springsremain dimensionally identical to the previous design and are easy to spotas a result of an advanced micro-peening process that eliminates materialstress, leaving behind a unique silver satin finish. Furthermore, we contin-ue to refine our exclusive Super Clean™ process to ensure that only thefinest wire material from premiere steel mills around the world is used inthe manufacture of COMP Cams® Valve Springs – nobody goes to greaterlengths to ensure the integrity of their valve springs. From daily driver tohardcore street/strip vehicles, you now have more reasons than ever beforeto make the #26918 Beehive™ Valve Springs your valve spring of choice.

04

• Extended .625” max lift, 125 lbs seat pressure at 1.800” installed height for aggressive cam designs

• Incorporates 10+ years of Beehive™ Valve Spring development and refined manufacturing processes

• Designed with GM Gen III/LS engines in mind – for use with hydraulic and solid roller camshafts

• Features manufacturing processes found in exotic race springs, providing a unique silver satin finish

PART NO. SEAT LOAD OPEN LOAD COIL BIND RETAINER

26125-24 120 lbs @ 1.640" 275 lbs @ 1.040" .902" #700, #792 (Steel)#702, #791 (Titanium)

*Springs are available as singles (-1), sets of (-16) and (-24)

Endure-X™ Gen III Solid Roller LiftersCOMP Cams® has engineered a new Endure-X™ Gen III Solid Roller Lifter for LS1/LS2/LS6 applications that is 14grams lighter than earlier designs. Suitable for applications ranging from high performance street to high rpmdrag/road race, they feature a Tool Steel axle, precision-sized needle bearing rollers and a rebuildable design to ensureyears of dependable service. Available individually or in sets of 16, they can be run with COMP Cams® Gen III streetand race solid roller camshafts or any other Gen III solid roller cam.

• 14 grams lighter than previous Gen III solid roller tappets

• Enhanced oiling includes pressure-fed oiling to bearing &axle for improved durability

• Unique features include ultra-precision race lifter tolerances,Tool Steel axle and precision-sized needle bearing rollers

• Solid roller design delivers maximum rpm capability for per-formance street & race applications

DESCRIPTION PART NO. Endure-X™ Gen III Solid Roller Lifters 8956-16*Lifters are available as singles (-1) and sets of (-16)

Ultra-Gold™ Aluminum Rocker ArmsCOMP Cams® has been a major proponent of steel rockers arms for many years, however with recent developments inthe design and manufacturing of aluminum rocker arms, it is now possible for us to offer a premium aluminum rock-er alternative. COMP Cams® proudly introduces the new “Gold Standard” in stud-mount, aluminum roller rocker arms– the Ultra-Gold™.

Designed specifically for high performance street and race engines, the Ultra-Gold™ Aluminum Rocker Arms are pre-cision CNC-machined to strict tolerances. Developed to meet the demands of professional engine builders, these rock-ers include features never before possible in an aluminum rocker arm.

• The most advanced aluminum rocker armever; incorporates modern design features

• Lifetime warranty - buy them once, usethem for a lifetime

• CNC-machined, lightweight design yieldsunrivaled quality & ratio accuracy

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

• Proven to withstand extremely aggressivespring pressure and valve lift

PART NO. DESCRIPTION STUD RATIO19001-16 A Chevrolet Small Block V8 265-400, V6 200-262 3/8" 1.519002-16 A Chevrolet V8 265-400, V6 200-262 3/8" 1.619004-16 A, B Chevrolet V8 265-400, V6 200-262 7/16" 1.519005-16 A, B Chevrolet V8 265-400, V6 200-262 7/16" 1.619021-16 C Chevrolet Big Block V8 396-454 7/16" 1.719043-16 Ford Small Block V8 289-302-351W 3/8" 1.619044-16 B Ford Small Block V8 289-302-351W 7/16" 1.6A For V6 order use -12 suffix. Will not replace late model rail rocker.B Must use screw-in studs and guide platesC Requires stud #4514-16 to replace late model pedestal

compcams.com | CAM HELP® 1.800.999.0853

LightweightTool Steel RetainersThe new COMP Cams® Lightweight Tool Steel Retainers pro-vide the best of all valve train benefits: light weight, as wellas exceptional strength and wear characteristics.Approximately 33 percent lighter than conventionalchromemoly steel retainers and only 2-4 grams heavier thantitanium (depending upon application), they are made fromhigh-grade Tool Steel, making them able to withstand eventhe most demanding race applications. Currently, these inno-vative new retainers are available for 1.437" and 1.500" dou-ble valve springs and accept COMP’s 10° Super Locks™ forunrivaled reliability.

• CNC-machined for consistent quality

• Developed using latest FEA & CAD software

• Spintron®-tested to extreme rpm to prove strengthis equivalent to titanium and standard steel

Gen IIIDouble Roller Billet Timing SetThe new COMP Cams® Gen III Double Roller Billet Timing Set is a 9-keyway set designed for up to eight degrees ofadvance or retard in two-degree increments. The timing set features heat-treated, machined billet steel gears for out-standing strength and a Torrington thrust bearing that reduces friction to a minimum. Additional features include apre-stretched, heat-treated roller chain with heavy-duty large pin design to further enhance high rpm and high horse-power strength and durability. The COMP Cams® GM Gen III 9-Keyway Double Roller Billet Timing Set is available inboth standard length and .005" undersized for engines that have a reduced crankshaft to camshaft centerline due toalign boring or other machining procedures.

Double Spring Style

Dia. 3

Dia. 2

Dia. 1

Lock Valve ValvePart # Description Angle Stem Size Spring Diameter Dia. 1 Dia. 2 Dia. 3

1730-16 Tool Steel Retainer 10° All 1.437"-1.500" 1.437" 1.065" .700"1731-16 Tool Steel Retainer 10° All 1.500"-1.550" 1.437" 1.100" .800"1732-16 Tool Steel Retainer 10° All 1.500"-1.550" 1.500" 1.110" .710"

*All retainers are available as singles (-1) and sets of (-16)

DESCRIPTION PART NO. Gen III Double Roller 7153Billet Timing Set (Standard)Gen III Double Roller 7153-5Billet Timing Set (.005" Undersized)

06