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COMP Cams CL11-600-8 Thumpr 227/241 Hydraulic Roller Cam and Lifter Kit for Chevy Big Block

(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

CL11-600-8
6 reviews
Sale Price

$1,225.95

In Stock (7)

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Product Details

The COMP Cams CL11-600-8 Thumpr Hydraulic Roller Camshaft and Lifter Kit delivers aggressive performance with a signature lope for Chevrolet Big Block 396-454 engines. This complete kit features a hydraulic roller cam with 227/241 duration specs designed to maximize throttle response and provide substantial power gains in the 2,500-6,500 RPM range.

Key Features:

  • Hydraulic roller camshaft with Thumpr profile for aggressive sound and performance
  • 227°/241° advertised duration provides strong mid-range to high-RPM power
  • Includes matching hydraulic roller lifters engineered for precise valve control
  • Complete kit includes camshaft, lifters, assembly lube, installation instructions, and COMP Cams decals
  • Designed specifically for Chevrolet Big Block 396-454 cubic inch engines
  • Ideal for street/strip applications seeking maximum performance with a distinctive idle

The Thumpr series is renowned for delivering exceptional throttle response and a choppy, aggressive idle that announces serious performance. This hydraulic roller design provides durability and reduced friction compared to flat tappet cams while maintaining excellent street manners. Perfect for enthusiasts looking to transform their big block Chevy with proven COMP Cams engineering and that unmistakable Thumpr sound.

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

303

Basic Operating RPM Range

1,900-5,500

Kit Type

Cl-Kit - Cam and Lifter Kit

Exhaust Valve Lift

0.53

Exhaust Duration at .050 inch Lift

241

Camshaft Material

Austempered Ductile Iron

AMAZON ASIN

B001GESFI8

Usage

Street/Performance

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

Intake Duration at .050 Inch Lift

227

Cam Type

Hydraulic Roller

Lifters Included

Yes

Retainers Included

No

Timing Chain and Gears Included

No

LOBE SEPARATION

107

Intake Valve Lift

0.547

Advertised Intake Duration

283

Valve Stem Seals Included

No

Camshaft Series

Thumpr

Engine Family

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

Great product. Fast shipping. Great and easy to use website! The air filter I purchased <br>From them cost $20 less than it was priced for at other competitors! I am very happy with the price.

Awesome, cheapest one line,plan on doing more business. Thanku

fast shipping, lowest prices.

Good pricing. Order processing is fast and easy.

Right item, right price !

Autoplicity was the least expensive and had great response time in regards to shipping. I will use Autoplicity next time I am needing automotive parts. Thanks

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