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A Thumpr-series cam from COMP Cams crafted for muscle cars and street rods, this grind emphasizes an aggressive idle and a broad torque curve through early intake opening and long exhaust duration. The series requires an aftermarket torque converter and lower gear ratio to keep the engine in its powerband and may reduce idle vacuum, which can affect power-brake vacuum systems.
COMP Cams Camshaft CRS 283T HR-107 T Th
