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The COMP Cams Big Mutha' Thumpr 243/257 flat hydraulic GK-kit is built for Chevrolet Small Block 262-400 applications and aggressive street/strip use. It generally requires about 9.5:1 compression and a 2,800+ rpm converter stall, and benefits from intake, gearing and header upgrades. Expect a very rough idle when installed.
COMP Cams Camshaft Kit CS 295T H-107 BM
