COMP Cams has awakened the musclecar sound--and it's nastier than ever! Introducing Thumpr Series cam and lifter kits, a line of cutting-edge hydraulic roller camshafts for engines originally equipped with flat tappet cams. You can expect a substantial power increase without sacrificing reliability or ease of maintenance! The lobe profile and grind characteristics of new Thumpr cams include blending an early exhaust valve opening, a long exhaust duration, and a generous amount of intake and exhaust overlap. This maximizes rough-idling tendencies, delivering a seriously aggressive exhaust note without impacting engine power output. Thumpr camshafts are available in a variety of grind profiles, each producing impressive horsepower and torque performance within a different rpm range.

More From This Category

COMP Cams Cam/Lifters/Timing, Xtreme Energy, Hydraulic Roller, Advertised Duration 276/282, Lift .510/.510, For Chevrolet Big Block 396-454, Kit

COMP Cams Cam/Lifters/Timing, Xtreme Energy, Hydraulic Roller, Advertised Duration 276/282, Lift .510/.510, For Chevrolet Big Block 396-454, Kit

$2,460.99

COMP Cams Camshaft, HRT, No Springs Required Stage 2, '09+ 5.7/6.4L HEMI, Each

COMP Cams Camshaft, HRT, No Springs Required Stage 2, '09+ 5.7/6.4L HEMI, Each

$1,231.15

COMP Cams Camshaft, Hydraulic Flat Tappet, Advertised Duration 342/342, Lift .447/.447, For Chevrolet, Small Block, Each

COMP Cams Camshaft, Hydraulic Flat Tappet, Advertised Duration 342/342, Lift .447/.447, For Chevrolet, Small Block, Each

$493.86

COMP Cams Camshaft, Magnum, Hydraulic Flat, Advertised Duration 292/292, Lift .518/.518, For Oldsmobile 260-455, Each

COMP Cams Camshaft, Magnum, Hydraulic Flat, Advertised Duration 292/292, Lift .518/.518, For Oldsmobile 260-455, Each

$505.35

COMP Cams Cam / Lifters / Valvetrain Xtreme Energy Solid Roller Advertised Duration 292 / 298 Li

COMP Cams Cam / Lifters / Valvetrain Xtreme Energy Solid Roller Advertised Duration 292 / 298 Li

$3,053.09