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.

More From This Category

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

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

$1,124.90

COMP Cams Camshaft, XFI, Hydraulic Roller Cam, Advertised Duration 274/287, Lift 0.619/0.612, For Dodge 5.7/6.1L HEMI w/ VVT, Each

COMP Cams Camshaft, XFI, Hydraulic Roller Cam, Advertised Duration 274/287, Lift 0.619/0.612, For Dodge 5.7/6.1L HEMI w/ VVT, Each

$1,266.89

COMP Cams Camshaft, Xtreme Energy, Solid Roller, Advertised Duration 280/286, Lift .646/.653, For Chevrolet Big Block 396-454, Each

COMP Cams Camshaft, Xtreme Energy, Solid Roller, Advertised Duration 280/286, Lift .646/.653, For Chevrolet Big Block 396-454, Each

$1,115.45

COMP Cams Camshaft, Xtreme Energy, Hydraulic Roller Cam, Advertised Duration 269/276, Lift .528/.536, ('03+) For Dodge Viper V10, Each

COMP Cams Camshaft, Xtreme Energy, Hydraulic Roller Cam, Advertised Duration 269/276, Lift .528/.536, ('03+) For Dodge Viper V10, Each

$1,324.67

COMP Cams Camshaft, Oval Track, Solid Flat, Advertised Duration 286/296, Lift .549/.543, For Chevrolet Small Block, Each

COMP Cams Camshaft, Oval Track, Solid Flat, Advertised Duration 286/296, Lift .549/.543, For Chevrolet Small Block, Each

$691.63