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COMP Cams CL11-602-4 Thumpr Hydraulic Flat Cam and Lifter Kit for Chevy Big Block 396-454

(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

CL11-602-4
7 reviews
Sale Price

$397.95

In Stock (10+)

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Usually delivered within 2 days

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Product Details

The COMP Cams CL11-602-4 Thumpr camshaft and lifter kit delivers aggressive sound and performance for Chevrolet Big Block engines (396-454 cubic inches). This complete hydraulic flat tappet cam kit features 243/257 degrees of advertised duration, providing a lopey idle characteristic that gives your classic Chevy its distinctive muscle car sound while maintaining excellent street manners.

Key Features:

  • Hydraulic flat tappet camshaft with 243/257 advertised duration
  • Designed specifically for Chevrolet Big Block 396-454 engines
  • Thumpr profile delivers aggressive idle sound with strong mid-range torque
  • Complete kit includes camshaft, hydraulic lifters, assembly lube, decals, and installation instructions
  • Ideal for street performance applications and resto-mod builds
  • No valve spring changes required with most stock or aftermarket cylinder heads

This camshaft kit is engineered for enthusiasts who want that classic performance sound without sacrificing driveability. The Thumpr series is known for delivering maximum audible impact while providing strong acceleration and torque throughout the powerband. Perfect for street rods, muscle car restorations, and weekend cruisers.

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 Intake Duration

295

Basic Operating RPM Range

2,300-6,200

Cam Type

Hydraulic Flat Tappet

Intake Valve Lift

0.522

Kit Type

Cl-Kit - Cam and Lifter Kit

Exhaust Valve Lift

0.507

Intake Duration at .050 Inch Lift

243

Exhaust Duration at .050 inch Lift

257

Camshaft Material

Cast Iron

AMAZON ASIN

B002EDZJO8

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

Lifters Included

Yes

Retainers Included

No

Timing Chain and Gears Included

No

LOBE SEPARATION

107

Usage

Street/Strip

Advertised Exhaust Duration

313

Valve Stem Seals Included

No

Camshaft Series

Thumpr

Engine Family

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

Ordered a sling to store my roof rack. There was an issue with the supplier which was quickly resolved by the Autoplicity staff. Great customer service -- most responsive I've ever seen.<br><br>Best prices around.

Super easy to browse web site and find the product I wanted.<br>The price was unmatched.<br>Shipping was fast and cheap.<br>Super shopping experience.

good

Great prices, helpful customer service. Ordered 2 by mistake. And they got it cleared up real fast. Saved over $80 off retail. Will be ordering from the, again!!!!! <br>

great so far.

Rather amazing and uneventful service in this day and age. Ordered a Thule bike rack for my Nissan Murano. It was in stock (unusual for high-end specialty products), shipped the next day, and was on my doorstep in a few days (excellent for a 60 lb. large box). I'd buy anything from these people without any reservation. AND, your order is insured - completely superfluous. Oh, and did I mention, the lowest price I could find ANYWHERE, and not by a few dollars - a lot.

Excellent service with the actual stock on hand, shipment was made the next day and a tracking number was provided. I have tried 2 other online supply stores which don't know what they have in stock.

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