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 Camshaft, Marine/Oval Track, Hydraulic Flat, Advertised Duration 280/288, Lift .547/.547, For Chevrolet Big Block 396-454, Each

COMP Cams Camshaft, Marine/Oval Track, Hydraulic Flat, Advertised Duration 280/288, Lift .547/.547, For Chevrolet Big Block 396-454, Each

$671.92

COMP Cams Camshaft, Xtreme Energy, Hydraulic Roller, Advertised Duration 300/306, Lift .562/.580, For Chevrolet Small Block, Each

COMP Cams Camshaft, Xtreme Energy, Hydraulic Roller, Advertised Duration 300/306, Lift .562/.580, For Chevrolet Small Block, Each

$1,083.98

COMP Cams Cam/Lifters/Timing, Xtreme Energy, Hydraulic Roller, Advertised Duration 258/264, Lift .510/.510, For Chevrolet Big Block 396-454, Kit

COMP Cams Cam/Lifters/Timing, Xtreme Energy, Hydraulic Roller, Advertised Duration 258/264, Lift .510/.510, For Chevrolet Big Block 396-454, Kit

$2,460.99

COMP Cams Cam / Lifters / Valvetrain Thumpr Hydraulic Flat Cam Advertised Duration 279 / 296 Lif

COMP Cams Cam / Lifters / Valvetrain Thumpr Hydraulic Flat Cam Advertised Duration 279 / 296 Lif

$1,328.74

COMP Cams Camshaft, Magnum, Hydraulic Flat, Advertised Duration 280/280, Lift .520/.520, For Chevrolet Big Block 396-454, Each

COMP Cams Camshaft, Magnum, Hydraulic Flat, Advertised Duration 280/280, Lift .520/.520, For Chevrolet Big Block 396-454, Each

$485.07

COMP Cams Camshaft, Hydraulic Roller, Duration 274 Int./267 Exh, Lift 0.514 Int./0.516 Exh, For Ford, 5.0L, Coyote, Set of 4

COMP Cams Camshaft, Hydraulic Roller, Duration 274 Int./267 Exh, Lift 0.514 Int./0.516 Exh, For Ford, 5.0L, Coyote, Set of 4

$4,108.67