COMP Cams is bringing the musclecar sound back, and it's nastier than ever! Few things grab our attention at a car show or cruise-in like a thumping, high performance idle. COMP Cams engineers introduce the Thumpr camshafts—a new series of hydraulic flat tappet cams. The lobe profile and grind characteristics of Thumprs use a combination of early exhaust valve opening, long exhaust duration, and a generous amount of intake and exhaust overlap—to maximize the rough-idling characteristics of the cams. They give you a seriously aggressive exhaust note without negatively impacting the power output or streetability of the engine. Thumpr camshafts are available in several grind profiles; each one will produce a rough, racy exhaust note and impressive amounts of horsepower and torque within a different rpm range.

More From This Category

COMP Cams Cam / Lifters / Valvetrain Thumpr Hydraulic Flat Advertised Duration 287 / 304 Lift .5

COMP Cams Cam / Lifters / Valvetrain Thumpr Hydraulic Flat Advertised Duration 287 / 304 Lift .5

$1,398.11

Crow Cams Camshaft, Ford Windsor 351 V8 Solid, Adv. Duration 278/282, Valve Lift 0.525/0.535

Crow Cams Camshaft, Ford Windsor 351 V8 Solid, Adv. Duration 278/282, Valve Lift 0.525/0.535

$382.22

COMP Cams Camshaft, Xtreme 4x4, Hydraulic Flat, Advertised Duration 262/270, Lift .514/.524, For Ford 429,460, Each

COMP Cams Camshaft, Xtreme 4x4, Hydraulic Flat, Advertised Duration 262/270, Lift .514/.524, For Ford 429,460, Each

$512.60

COMP Cams Cam/Lifters/Timing, Xtreme Marine, Hydraulic Roller, Advertised Duration 270/276, Lift .495/.503, For Chevrolet Small Block, Kit

COMP Cams Cam/Lifters/Timing, Xtreme Marine, Hydraulic Roller, Advertised Duration 270/276, Lift .495/.503, For Chevrolet Small Block, Kit

$1,809.21

COMP Cams Camshaft, Computer Controlled, Hydraulic Roller Cam, Advertised Duration 254/262, Lift 0.45/0.45, For Chrysler 273-360, Each

COMP Cams Camshaft, Computer Controlled, Hydraulic Roller Cam, Advertised Duration 254/262, Lift 0.45/0.45, For Chrysler 273-360, Each

$1,077.45

COMP Cams Camshaft, Xtreme Energy NIT, Xtreme Energy, Hydraulic Flat, Advertised Duration 284/296, Lift .507/.510, For Chevrolet Small Block, Each

COMP Cams Camshaft, Xtreme Energy NIT, Xtreme Energy, Hydraulic Flat, Advertised Duration 284/296, Lift .507/.510, For Chevrolet Small Block, Each

$784.62