Musclecar sound is back and nastier than ever with these Thumpr retrofit hydraulic roller cam and lifter kits from COMP Cams! These cams feature a thumping high performance idle and provide significant horsepower and torque increases. Specially engineered profiles are offered for each unique engine, providing the perfect combination of an early intake valve opening, a long exhaust duration, and a generous amount of intake and exhaust overlap to maximize your engine's nasty-idling characteristics without negatively impacting streetability. These kits include high-quality matched lifters for unbeatable performance, durability, and ease of installation.

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COMP Cams Camshaft, XFI, Hydraulic Roller Cam, Advertised Duration 253/274, Lift 0.45/0.45, 4.6/5.4L Modular 3 Valve, Each

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COMP Cams Camshaft, Drag Race, Solid Roller, Advertised Duration 314/334, Lift .876/.800, For Chevrolet Small Block, Each

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COMP Cams Cam/Lifters/Timing, XE Computer Controlled, Hydraulic Flat, Advertised Duration 262/270, Lift .464/.470, For Chevrolet Small Block, Kit

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COMP Cams Camshaft, Xtreme Energy, Hydraulic Roller, Advertised Duration 264/270, Lift .513/.513, For Ford 351W, Each

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COMP Cams Cam / Lifters / Valvetrain Magnum Solid Flat Advertised Duration 282 / 282 Lift .570 / .

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Crow Cams Camshaft, Ford Windsor V8 Hydraulic, Adv. Duration 269/269, Valve Lift 0.426/0.426

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