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 Camshaft, Xtreme 4x4, Hydraulic Flat, Advertised Duration 262/270, Lift .505/.515, For Chevrolet Big Block 396-454, Each

COMP Cams Camshaft, Xtreme 4x4, Hydraulic Flat, Advertised Duration 262/270, Lift .505/.515, For Chevrolet Big Block 396-454, Each

$507.75

COMP Cams Cam / Lifters / Valvetrain XFI RPM Hydraulic Roller Advertised Duration 265 / 271 Lift

COMP Cams Cam / Lifters / Valvetrain XFI RPM Hydraulic Roller Advertised Duration 265 / 271 Lift

$2,453.00

Crow Cams Camshaft Roller, VS-VT Medium, 1.9 RR, Each

Crow Cams Camshaft Roller, VS-VT Medium, 1.9 RR, Each

$843.71

COMP Cams Camshaft, Magnum, Hydraulic Flat Cam, Advertised Duration 292/292, Lift 0.501/0.501, For Chrysler 283-440, Each

COMP Cams Camshaft, Magnum, Hydraulic Flat Cam, Advertised Duration 292/292, Lift 0.501/0.501, For Chrysler 283-440, Each

$505.35

COMP Cams Cam/Lifters/Timing, Xtreme Energy, Hydraulic Flat Cam, Advertised Duration 256/262, Lift .477/.484, For Ford 351W

COMP Cams Cam/Lifters/Timing, Xtreme Energy, Hydraulic Flat Cam, Advertised Duration 256/262, Lift .477/.484, For Ford 351W

$751.84