🔥 COMP Cams Thumpr 227/241 Hydraulic Flat Cam for Chevy Big Block 396-454 - Unleash the Beast! Review

These Thumpr series cams are really good. Okay, they give you a great aggressive exhaust note and idle and still deliver a good level of performance.

I have this cam in a big block 402 1971 with cambered standard pistons and 820 cast heads, 113 ccm chambers. Very Good I have the engine in a 1993 Long Bed C1500 with 4:10 gears and it woke the engine up immediately by running a Proform 650 race carburettor and a 2800 converter and it runs very powerfully. If you want an awkward sounding cam rather than a big caliper motor, the Thumpr cam is the way to go. Works best at 9 to 1 compression or higher.

Comp Cams Mothr Thumpr Kit includes camshaft, tappets, triple valve springs, dual roller timing chain, retainers, valve stem retainers and valve stem seals. The seals that came with my kit didn't work on my heads unless you take the heads and edit them to make them work. I've decided to stick with OE style umbrella seals. My springs came with a third valve spring that didn't work on my heads either. Using the dual-valve mainsprings along with break-in oil and assembly lube, I installed the cam…