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The COMP Cams Mutha' Thumpr hydraulic roller cam FS 291Th is a high‑performance street/strip grind that produces a very rough idle and aggressive power. It requires about 9:1 compression, a 2,500+ RPM stall converter and supporting intake, gears and headers to reach its intended powerband. Use this cam when building a race‑oriented street car or strip machine that accepts a pronounced idle character.
COMP Cams Camshaft FS 291Th R7 Thumper R
