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The COMP Cams Classic Big Mutha' Thumpr 242/257 hydraulic flat cam for Chevrolet 348–409 is a street/strip profile that needs supporting hardware and modifications to deliver expected results. Recommendations include aluminum heads, higher stall speeds (2500+), gears and headers, and expect a very rough idle consistent with an aggressive camshaft tuned for strong top-end power.
COMP Cams Camshaft 348/409 295T H-107 T
