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The COMP Cams B455 287T Mutha' Thumpr hydraulic cam is built for aggressive street and strip use in Buick 400, 430 and 455 engines. It generates strong midrange power but requires supporting modifications—9:1 compression, a 2500+ stall converter, intake, gears and headers—to perform as intended. It yields a rough idle as part of its high-output tuning.
COMP Cams Camshaft B455 287T H-107 T Th
