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COMP Cams CL11-602-8 Big Mutha Thumpr Hydraulic Roller Cam and Lifter Kit for Chevy Big Block 396-454

(Chevrolet Camaro 1967-72, Corvette 1967-74, Impala 1965-76, Malibu 1966-67, 1973-75, C1500 1990-93, Chevelle 1965-73, Blazer 1973-74 + 108 more models)

Manufacturer

Picture for manufacturer COMP Cams

Part Number

CL11-602-8
7 reviews
Sale Price

$1,225.95

Estimated ship date Thursday, November 19

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Product Details

The COMP Cams Big Mutha Thumpr CL11-602-8 is a complete hydraulic roller camshaft and lifter kit engineered specifically for Chevrolet big block engines (396-454 cubic inches). This aggressive street performance cam delivers a distinctive lumpy idle, strong mid-range torque, and excellent top-end power, making it ideal for muscle car restorations and performance street builds.

Camshaft Specifications:

  • Intake Duration: 243° at .050" lift
  • Exhaust Duration: 257° at .050" lift
  • Hydraulic roller cam design for reduced friction and wear
  • Optimized for engines with 9.0:1 to 11.0:1 compression ratio
  • Recommended RPM range: 1,600-5,800 RPM
  • Aggressive lope idle with excellent street manners

Complete Kit Includes:

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

The Big Mutha Thumpr series is designed for enthusiasts who want maximum performance sound and aggressive power delivery without sacrificing streetability. This cam works exceptionally well with aftermarket cylinder heads, headers, and performance intake manifolds. Professional installation and proper valve spring selection are recommended to ensure optimal performance and longevity.

Products specifications

Fits

Chevrolet Camaro 1967-72, Corvette 1967-74, Impala 1965-76, Malibu 1966-67, 1973-75, C1500 1990-93, Chevelle 1965-73, Blazer 1973-74, C10 Pickup 1968-80, Caprice 1966-76, C10 1975-81, El Camino 1966-75, Monte Carlo 1970-75 + 103 more models

Advertised Exhaust Duration

319

Advertised Intake Duration

299

Basic Operating RPM Range

2,500-6,100

Kit Type

Cl-Kit - Cam and Lifter Kit

Exhaust Valve Lift

0.554

Intake Valve Lift

0.57

Intake Duration at .050 Inch Lift

243

Exhaust Duration at .050 inch Lift

257

Camshaft Material

Austempered Ductile Iron

AMAZON ASIN

B001GESFJ2

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

Engine Family

Chevrolet 396-454 c.i. 8 Cylinder (1967-1996)

Prices are among the lowest around. Had a change with my order. Customer support team was quick to respond to emails and make corrections. Will order from Autoplicity again.

Excellent store! I found the fuel pump that I was looking for right away and for almost half the cost of competitors. Better yet, the order shipped out that night! I make a lot of online purchases and have grown accustomed to the normal lengthy process but this store knows what they're doing! Great experience overall and I will be sure to buy from them again and spread the word!

Great prices. Fast Shipping. I would definitely do business again.

Fast shipping , product just as described, and quality product.

Nobody else had part in stock. Instant shipping and a good price. Will do business again!

Excellent service!!!! Ordered another part from one of those big chain stores three days earlier and got your part one day sooner than theirs. Thanks. Excellent customer service. Wouldn't hesitate to use you again.

Best place to find good products for cheap. I just got a jet programmer for almost $100 below the normal price. I also appreciate the fact that they gave me a call to make sure I was the one ordering.

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