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The COMP Cams Mutha' Thumpr hydraulic flat cam (FC 287T) for Ford 351C/351M–400M is built for high-performance street and strip use. It requires higher compression—around 9:1—plus a 2500+ stall converter and supporting intake, headers and gear changes. Expect a rough idle characteristic typical of aggressive grinds.
COMP Cams Camshaft FC 287T H-107 T Thumper
