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 Solid Roller Advertised Duration 286 / 292 Li

COMP Cams Cam / Lifters / Valvetrain Xtreme Energy Solid Roller Advertised Duration 286 / 292 Li

$3,141.75

Crow Cams Camshaft, Holden V8 304/355 Carby Hydraulic Roller, Adv. Duration 310/310, Valve Lift 0.627/0.627

Crow Cams Camshaft, Holden V8 304/355 Carby Hydraulic Roller, Adv. Duration 310/310, Valve Lift 0.627/0.627

$997.16

COMP Cams Cam/Lifters/Timing, Xtreme Energy, Hydraulic Flat, Advertised Duration 274/286, Lift .488/.491, For Pontiac 265-455, Kit

COMP Cams Cam/Lifters/Timing, Xtreme Energy, Hydraulic Flat, Advertised Duration 274/286, Lift .488/.491, For Pontiac 265-455, Kit

$886.87

COMP Cams Cam/Lifters/Timing, Thumpr, Hydraulic Roller, Advertised Duration 283/303, Lift .531/.515, For Ford 351W, Kit

COMP Cams Cam/Lifters/Timing, Thumpr, Hydraulic Roller, Advertised Duration 283/303, Lift .531/.515, For Ford 351W, Kit

$3,221.88

Trick Flow Camshaft, Hydraulic Flat Tappet, Advertised Duration 308/316, Lift .510/.518, Lobe Sep. 112, Small For Chevrolet, Each

Trick Flow Camshaft, Hydraulic Flat Tappet, Advertised Duration 308/316, Lift .510/.518, Lobe Sep. 112, Small For Chevrolet, Each

$448.05

COMP Cams Cam / Lifters / Valvetrain High Energy Hydraulic Flat Advertised Duration 240 / 248 Li

COMP Cams Cam / Lifters / Valvetrain High Energy Hydraulic Flat Advertised Duration 240 / 248 Li

$1,015.71