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The COMP Cams Thumpr hydraulic roller cam FS 283Th delivers the series’ characteristic choppy, thumping idle and strong street‑oriented power. Intended for high‑performance street use, it can be run with a stock converter but reaches its full potential with a 2,000+ RPM stall converter and supporting gears. The design emphasizes exhaust note and a broad torque curve for muscle cars and street rods.
COMP Cams Camshaft FS 283Th R7 Thumper R
