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COMP Cams CL11-600-4 Thumpr Hydraulic Flat Cam and Lifter Kit for Chevrolet Big Block - 227/241

(Chevrolet Camaro 1967-72, Corvette 1966-74, Impala 1965-76, Malibu 1966-67, 1973-75, C1500 1990-93, Chevelle 1965-73, Blazer 1973-74 + 106 more models)

Manufacturer

Picture for manufacturer COMP Cams

Part Number

CL11-600-4
6 reviews
Sale Price

$397.95

In Stock (7)

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Product Details

The COMP Cams CL11-600-4 Thumpr Cam and Lifter Kit delivers aggressive performance for Chevrolet Big Block 396-454 engines. This hydraulic flat tappet camshaft features a 227/241 duration split designed to produce the signature Thumpr idle sound while delivering strong mid-range torque and horsepower gains.

Key Specifications:

  • Advertised Duration: 279°/293° intake/exhaust
  • Duration at .050": 227°/241° intake/exhaust
  • Valve Lift: .462"/.470" intake/exhaust with 1.7:1 rocker ratio
  • Lobe Separation Angle: 112°
  • RPM Range: 1,600-5,600 RPM
  • Hydraulic flat tappet design for street performance

Complete Kit Includes:

  • Hydraulic flat tappet camshaft
  • 16 hydraulic lifters
  • Assembly lube for proper break-in
  • Installation instructions
  • COMP Cams decals

This Thumpr camshaft is engineered for street performance applications where an aggressive idle and strong throttle response are desired. The hydraulic design eliminates the need for valve adjustments while the optimized lobe profiles provide excellent drivability. Compatible with stock torque converters and rear gear ratios, making it an ideal upgrade for street-driven Big Block Chevrolet engines.

Products specifications

Fits

Chevrolet Camaro 1967-72, Corvette 1966-74, 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 + 101 more models

Advertised Exhaust Duration

297

Advertised Intake Duration

279

Basic Operating RPM Range

1,800-5,600

Cam Type

Hydraulic Flat Tappet

Kit Type

Cl-Kit - Cam and Lifter Kit

Exhaust Valve Lift

0.483

Intake Valve Lift

0.498

Exhaust Duration at .050 inch Lift

241

Camshaft Material

Cast Iron

AMAZON ASIN

B002EE5A7I

Usage

Street/Performance

Assembly Lubricant Included

Yes

Valve Springs Required

Yes

Lifter Type

Hydraulic Flat Tappet

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

Intake Duration at .050 Inch Lift

227

Lifters Included

Yes

Retainers Included

No

Timing Chain and Gears Included

No

LOBE SEPARATION

107

Valve Stem Seals Included

No

Camshaft Series

Thumpr

Engine Family

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

Great prices. Great live customer service. Very pleased, will definitely order again.

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GREAT SERVICE, FAST SHIPPING, WILL USE AGAIN

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