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COMP Cams Thumpr camshaft offering an aggressive, hard-hitting exhaust note at idle with strong horsepower gains and a broad torque curve. Suited to muscle cars and street rods, its early intake opening and long exhaust duration favor a race-style idle. The grind requires an aftermarket torque converter and lower gear ratio to stay in the powerband; reduced vacuum at idle may need a vacuum canister, pump or hydroboost for power-brake systems.
COMP Cams Camshaft A8 279T H-107 T Thumper
