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COMP Cams CL51-600-5 Thumpr Hydraulic Flat Camshaft and Lifter Kit for Pontiac V8

(Pontiac GTO 1964-73, Firebird 1967-81, Grand Prix 1962-81, Grand Am 1973-75, 1978-80, Bonneville 1957-81, LeMans 1963-81, Catalina 1955-81 + 27 more models)

Manufacturer

Picture for manufacturer COMP Cams

Part Number

CL51-600-5
4 reviews
Sale Price

$451.95

In Stock (5)

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Usually delivered within 2 days

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Product Details

The COMP Cams CL51-600-5 Thumpr Camshaft and Lifter Kit delivers aggressive performance and that signature muscle car lope for Pontiac 265-455 cubic inch V8 engines. This hydraulic flat tappet camshaft features a 227/241 duration split that provides increased vacuum for power brakes while generating exceptional mid-range torque and horsepower gains.

Key Features:

  • Hydraulic flat tappet camshaft with 227/241 advertised duration
  • Designed specifically for Pontiac 265, 301, 326, 350, 389, 400, 421, 428, and 455 engines
  • Aggressive Thumpr profile produces distinctive exhaust note and strong throttle response
  • Split duration design maintains higher vacuum than traditional performance cams
  • Improved mid-range power delivery ideal for street performance applications
  • Complete kit includes camshaft, hydraulic lifters, assembly lube, decals, and installation instructions

This complete cam and lifter kit provides everything needed for installation except pushrods and timing components. The Thumpr series is engineered for street machines that demand head-turning sound with real-world drivability. COMP Cams precision manufacturing ensures proper lobe profiles and consistent valve events for reliable performance.

Products specifications

Fits

Pontiac GTO 1964-73, Firebird 1967-81, Grand Prix 1962-81, Grand Am 1973-75, 1978-80, Bonneville 1957-81, LeMans 1963-81, Catalina 1955-81, Tempest 1961-70, Ventura 1960-61, 1972-75, 1977, Grandville 1971-75 + 24 more models

Advertised Exhaust Duration

297

Advertised Intake Duration

279

Basic Operating RPM Range

2,000-5,800

Cam Type

Hydraulic Flat Tappet

Exhaust Valve Lift

0.465

Intake Valve Lift

0.478

Kit Type

Cl-Kit - Cam and Lifter Kit

Exhaust Duration at .050 inch Lift

241

Camshaft Material

Cast Iron

AMAZON ASIN

B005H89W9U

Engine Family

Pontiac 265-455 C.I. 8 Cylinder (1955-1981)

Usage

Street/Performance

Assembly Lubricant Included

Yes

Camshaft Gear Attachment

1-Bolt

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

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

Lowest price I could find in the net. It was easy to order. Delivered on time. I'll buy again.

Great pricing, fast shipping, A+++

Extremely fast shipping - shipped the next business day and I was notified via email about everything. Also, VERY good pricing on the products AND shipping. Thanks!

fast and easy competitive pricing

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