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The COMP Cams Mutha' Thumpr hydraulic flat cam for Chrysler 383–440 engines provides a rough, thumping idle and strong street/strip performance. It requires about 9:1 compression and a 2500+ stall converter, and needs intake, gears and headers to realize its gains. Expect aggressive sound and noticeable mid/high-range response when properly matched.
COMP Cams Camshaft CRB 287T H-107 T Thu
