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COMP Cams CL08-602-8 Big Mutha' Thumpr Hydraulic Roller Cam and Lifter Kit - 243/257

(GMC G2500 1987-95, Yukon 1992-95, K1500 1988-95, C1500 1988-95, K2500 1988-95, Jimmy 1987-91, C3500 1988-95, K2500 Suburban 1992-95 + 89 more models)

Manufacturer

Picture for manufacturer COMP Cams

Part Number

CL08-602-8
8 reviews
Sale Price

$857.95

Estimated ship date Saturday, November 21

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Product Details

The COMP Cams Big Mutha' Thumpr CL08-602-8 is a complete hydraulic roller camshaft and lifter kit engineered for serious performance enthusiasts seeking an aggressive idle and strong mid-range power in their small block Chevy engine. This kit is designed specifically for OE roller block applications and delivers a distinctive lope with exceptional throttle response.

Camshaft Specifications:

  • Advertised Duration: 243° intake / 257° exhaust
  • Duration at .050": 223° intake / 235° exhaust
  • Valve Lift: .523" intake / .525" exhaust (with 1.5 rocker ratio)
  • Lobe Separation Angle: 112°
  • Hydraulic roller design for OE roller blocks

Complete Kit Includes:

  • Hydraulic roller camshaft
  • Hydraulic roller lifters (16)
  • Assembly lube for proper break-in
  • Installation instructions
  • COMP Cams decals

The Big Mutha' Thumpr series is ideal for street/strip applications where you want maximum attitude with reliable hydraulic roller technology. This cam profile produces excellent power from 1,500 to 5,600 RPM and works best with aftermarket cylinder heads, headers, and a performance intake manifold. Recommended for engines with 9.0:1 or higher compression ratio and 2,400+ RPM stall converter in automatic transmission applications.

Application: Small Block Chevy (SBC) engines with OE roller blocks including 262, 265, 267, 283, 302, 305, 307, 327, 350, and 400 cubic inch displacements.

Products specifications

Fits

GMC G2500 1987-95, Yukon 1992-95, K1500 1988-95, C1500 1988-95, K2500 1988-95, Jimmy 1987-91, C3500 1988-95, K2500 Suburban 1992-95, K3500 1988-95, C2500 1988-95, K1500 Suburban 1992-95, G25/G2500 Van 1987-95, C1500 Suburban 1992-95 + 84 more models

Advertised Exhaust Duration

319

Advertised Intake Duration

299

Basic Operating RPM Range

1,900-5,600

Engine Family

Chevrolet 305-350 c.i. 8 Cylinder O.E. Roller (1987-1998)

Kit Type

Cl-Kit - Cam and Lifter Kit

Exhaust Valve Lift

0.519

Intake Valve Lift

0.533

Intake Duration at .050 Inch Lift

243

Exhaust Duration at .050 inch Lift

257

Camshaft Material

Austempered Ductile Iron

Assembly Lubricant Included

No

Valve Springs Required

Yes

Prop 65

WARNING: Cancer and Reproductive Harm P65Warnings.ca.gov

C.A.R.B. Exempt for Foreign Vehicles Manufactured Before 1967?

Yes, but must meet tailpipe emission standards for year of vehicle.

C.A.R.B. Exempt for On-Road Vehicles?

No

C.A.R.B. Exempt for Racing and Off-Road Only Vehicles?

Yes, but must be a race/competition only vehicle.

C.A.R.B. Exempt for California Certified Vehicles Manufactured Before 1965?

Yes, but must meet tailpipe emission standards for year of vehicle.

C.A.R.B. Exempt for Federally Certified Vehicles Manufactured Before 1967?

Yes, but must meet tailpipe emission standards for year of vehicle.

Gaskets Included

No

Camshaft Gear Attachment

3-Bolt

Locks Included

No

Lifter Type

Hydraulic Roller

Cam Type

Hydraulic Roller

Lifters Included

Yes

Retainers Included

No

Timing Chain and Gears Included

No

LOBE SEPARATION

107

Usage

Street/Strip

Valve Stem Seals Included

No

Camshaft Series

Thumpr

Great price for the item. Both internet and phone conversations were quick and knowledgeable.

Fast service purchased from them many times no problems and usually have coupon codes!! Will do buissiness with again.

Great price, good e-mail communication and fast shipping. Positive experience with Autoplicity so far.

Cheapest price by far, not the speediest shipment unfortunately.

Found the best price at Autoplicity on my cold air intake. Quick turn-around time and inexpensive shipping. I'll definitely be back.

fast shipping and great prices

Great pricing on almost every product! Quick process and fast shipping! Will definitely order from Autoplicity again in the future.

quick and polite service will deal with again

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