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Camshaft Kits, Big Mutha Thumpr Hydraulic Roller Cam and Lifter Kits, Retro-fit, Advertised Duration 299/319, Lift .579/.563, Ford, Big Block FE, Kit

COMP Cams is bringing the muscle car sound back, and it's nastier than ever--Big Mutha' Thumpr hydraulic roller cam and lifter kits. These camshafts are for use in engines that were originally equipped with flat tappet camshafts and are designed to maximize the rough-idling characteristics of the cams, giving you a seriously aggressive exhaust note without negatively impacting the power output or street ability of the engine. COMP Cams Big Mutha' Thumpr cam and lifter kits deliver a cutting-edge hydraulic roller cam offering a substantial power increase, reliability, and ease of maintenance, along with a set of matched lifters.