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 Cam / Lifters / Valvetrain Xtreme Energy Hydraulic Roller Cam Advertised Duration 26

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COMP Cams Camshaft, Xtreme Energy, Hydraulic Roller Cam, Advertised Duration 265/281, Lift .5/.5, For Ford 3.8/4.2L 6 Cylinder, Each

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COMP Cams Cam / Lifters / Valvetrain Xtreme Energy Hydraulic Roller Advertised Duration 300 / 30

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COMP Cams Camshaft, High Energy, Hydraulic Roller, Advertised Duration 270/284, Lift .500/.500, For Ford 4.0L 6 Cylinder, Each

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COMP Cams Cam / Lifters / Valvetrain High Energy Hydraulic Flat Advertised Duration 268 / 268 Li

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