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 Energy, Hydraulic Flat, Advertised Duration 284/296, Lift .574/.578, For Chevrolet Big Block 396-454, Each

COMP Cams Camshaft, Xtreme Energy, Hydraulic Flat, Advertised Duration 284/296, Lift .574/.578, For Chevrolet Big Block 396-454, Each

$525.37

COMP Cams Camshaft, Xtreme Energy, Hydraulic Flat, Advertised Duration 294/306, Lift .588/.593, For Chevrolet Big Block 396-454, Each

COMP Cams Camshaft, Xtreme Energy, Hydraulic Flat, Advertised Duration 294/306, Lift .588/.593, For Chevrolet Big Block 396-454, Each

$591.41

COMP Cams Camshaft, Magnum, Hydraulic Flat, Advertised Duration 280/280, Lift .490/.490, For Oldsmobile 260-455, Each

COMP Cams Camshaft, Magnum, Hydraulic Flat, Advertised Duration 280/280, Lift .490/.490, For Oldsmobile 260-455, Each

$602.88

Crow Cams Camshaft, Ford Windsor V8 Hydraulic, Adv. Duration 268/288, Valve Lift 0.45/0.48

Crow Cams Camshaft, Ford Windsor V8 Hydraulic, Adv. Duration 268/288, Valve Lift 0.45/0.48

$402.34

COMP Cams Cam/Lifters/Timing, Nitrous, Hydraulic Roller Cam, Advertised Duration 282/294, Lift 0.565/0.58, For Ford 5.0L

COMP Cams Cam/Lifters/Timing, Nitrous, Hydraulic Roller Cam, Advertised Duration 282/294, Lift 0.565/0.58, For Ford 5.0L

$1,923.29