Engines and Components› Camshafts and Valvetrain

COMP Cams

Thmpr 227/241 H-Rlr Cam Ford 351C/M-400M

$549.95

SKU: C007 32-600-8

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Advanced — 4+ hours

Description

Part #: 32-600-8

Designed to deliver an aggressive, hard-hitting exhaust note at idle, the Thumpr camshaft series from COMP Cams also delivers excellent horsepower gains and a broad torque curve. A perfect choice for muscle cars and street rods, the Thumpr series' early intake valve opening and long exhaust duration create optimum overlap for that race car idle. The Thumpr grinds all require an aftermarket torque converter and lower gear ratio to ensure the drivetrain always puts the engine in its powerband. Additionally, Thumpr camshafts typically deliver reduced vacuum at idle, making a vacuum canister, pump or hydroboost a requirement for vehicles running power brakes.

High performance street, stock converter ok, best with 2000+ converter and gears, choppy/thumping idle.

This product may expose you to chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm.

MIA's Description

This COMP Cams Thumpr Retro-Fit Hydraulic Roller Camshaft Complete Kit is engineered for Ford 351C, 351M, and 400M 8-cylinder engines produced between 1970 and 1983, specifically for non-factory roller blocks. This kit provides three grinds to suit various performance needs, featuring long exhaust duration to produce a distinctive, aggressive exhaust note. Expect excellent horsepower gains and a broad torque curve, delivering real 'seat-of-the-pants' performance. Designed for use with the latest valvetrain components, this high-performance street camshaft is compatible with stock torque converters but performs best with a 2000+ RPM stall converter and appropriate gearing. It's known for its choppy, thumping idle. The kit includes a 1-year limited warranty.

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Specifications

BrandCOMP Cams
Part NumberC007 32-600-8

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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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