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 Flat, Advertised Duration 252/252, Lift .425/.425, For Chevrolet 262/4.3L, Kit

COMP Cams Cam/Lifters/Timing, Xtreme Energy, Hydraulic Flat, Advertised Duration 252/252, Lift .425/.425, For Chevrolet 262/4.3L, Kit

$773.22

COMP Cams Camshaft, Magnum, Solid Flat, Advertised Duration 294/294, Lift .595/.595, For Chevrolet Big Block 396-454, Each

COMP Cams Camshaft, Magnum, Solid Flat, Advertised Duration 294/294, Lift .595/.595, For Chevrolet Big Block 396-454, Each

$502.87

COMP Cams Cam / Lifters / Valvetrain Magnum Hydraulic Roller Advertised Duration 290 / 290 Lift

COMP Cams Cam / Lifters / Valvetrain Magnum Hydraulic Roller Advertised Duration 290 / 290 Lift

$2,578.10

COMP Cams Cam/Lifters/Timing, High Energy, Hydraulic Flat, Advertised Duration 260/260, Lift .484/.484, For Ford 352-428, Kit

COMP Cams Cam/Lifters/Timing, High Energy, Hydraulic Flat, Advertised Duration 260/260, Lift .484/.484, For Ford 352-428, Kit

$746.69

COMP Cams Cam / Lifters / Valvetrain Xtreme Energy Hydraulic Flat Cam Advertised Duration 250 /

COMP Cams Cam / Lifters / Valvetrain Xtreme Energy Hydraulic Flat Cam Advertised Duration 250 /

$1,095.17