COMP Cams is bringing the muscle car sound back, and it's nastier than ever! Let's face it--few things serve to grab our attention at a car show or cruise night more than a car with a thumping, high performance idle. In an ongoing quest to provide you with the performance and sound you demand, COMP Cams engineering team proudly introduces the Thumpr Series cam and lifter kits. The lobe profile and grind characteristics of these Thumpr camshafts use a combination of an early exhaust valve opening, a long exhaust duration, and a generous amount of intake and exhaust overlap to maximize the rough-idling characteristics of the cams. This gives you a seriously aggressive exhaust note without negatively impacting the power output or streetability of the engine. Thumpr camshafts are available in different grind profiles; each one will produce a rough, racy exhaust note and impressive amounts of horsepower and torque within a different rpm range. Thumpr Series cam and lifter kits deliver a substantial power increase over an identical hydraulic flat tappet grind without sacrificing reliability or ease of maintenance.

More From This Category

COMP Cams Cam / Lifters / Valvetrain Xtreme Marine Hydraulic Roller Advertised Duration 270 / 27

COMP Cams Cam / Lifters / Valvetrain Xtreme Marine Hydraulic Roller Advertised Duration 270 / 27

$2,937.87

COMP Cams Camshaft, Mechanical Flat Tappet, Advertised Duration 270/282, Lift .504/.504, For Ford, 351W, Each

COMP Cams Camshaft, Mechanical Flat Tappet, Advertised Duration 270/282, Lift .504/.504, For Ford, 351W, Each

$693.90

COMP Cams Camshaft, Oval Track, Solid Roller, Advertised Duration 296/304, Lift .630/.630, For Chevrolet Small Block, Each

COMP Cams Camshaft, Oval Track, Solid Roller, Advertised Duration 296/304, Lift .630/.630, For Chevrolet Small Block, Each

$1,108.73

COMP Cams Cam/Lifters/Timing, Xtreme Energy, Hydraulic Roller Cam, Advertised Duration 264/270, Lift .512/.512, For Ford 5.0L

COMP Cams Cam/Lifters/Timing, Xtreme Energy, Hydraulic Roller Cam, Advertised Duration 264/270, Lift .512/.512, For Ford 5.0L

$1,923.29

COMP Cams Camshaft, Drag Race, Solid Flat, Advertised Duration 300/314, Lift .619/.612, For Pontiac 265-455, Each

COMP Cams Camshaft, Drag Race, Solid Flat, Advertised Duration 300/314, Lift .619/.612, For Pontiac 265-455, Each

$691.63

Crow Cams Camshaft, Ford Windsor 351 V8 Solid, Adv. Duration 281/281, Valve Lift 0.552/0.552

Crow Cams Camshaft, Ford Windsor 351 V8 Solid, Adv. Duration 281/281, Valve Lift 0.552/0.552

$402.34