Engines and Components› Camshafts and Valvetrain

COMP Cams

Thmpr 235/249 H-Flat K-Kit Chrys 383-440

$878.28

SKU: C007 K21-601-5

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Ships by Jun 10
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Description

The COMP Cams K21-601-5 Mutha' Thumpr K-Kit is a hydraulic flat tappet camshaft designed for Chrysler 383-440 cubic inch 8 Cylinder B/RB engines manufactured between 1959-1979. It provides an aggressive idle sound and improved performance within an RPM operating range of 2,200-6,100. The kit includes the camshaft, lifters, locks, retainers, a double roller timing chain and gears, valve springs, and valve stem seals. Key specifications include an intake duration at .050 inch lift of 235, exhaust duration at .050 inch lift of 249, intake valve lift of 0.497 inches, and exhaust valve lift of 0.483 inches.

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Specifications

BrandCOMP Cams
Part NumberC007 K21-601-5

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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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