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Comp Cams, Thumpr, Hydraulic Roller Cam, Chev BB Retro-Fit |
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Comp Cams Thumpr Hydraulic Roller Camshaft
Muscle car sound is back. Featuring a combination of early exhaust valve opening, long exhaust duration and a generous amount of overlap to maximize the rough-idling characteristics, without negatively impacting the power output or streetability.
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