Engines and Components Camshafts and Valvetrain

COMP Cams

BMThmp 243/257 H-Flt CL-Kit Pont 265-455

$510.50

SKU: C007 CL51-602-5

In Stock
In Stock
Ships by Jun 9
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Non-Returnable Item
INSTALL DIFFICULTY
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Description

COMP Cams Big Mutha Thumpr Hydraulic Flat Tappet Camshaft and Lifter Kit with lift .501"/.486" and duration 295/313, operating in the RPM range of 2500-6400. This kit is designed for Pontiac 265-455ci 8-cylinder engines from 1955-1981, delivering a powerful, hard-hitting exhaust note and excellent horsepower gains. Requires 9.5:1 compression, 2800+ stall, intake, gears, and headers; produces a very rough idle. Includes camshaft and lifters, assembly lubricant. Valve springs required.

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Specifications

BrandCOMP Cams
Part NumberC007 CL51-602-5

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Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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