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 Magnum / Drag Race Hydraulic Flat Cam Advertised Duration 3

COMP Cams Cam / Lifters / Valvetrain Magnum / Drag Race Hydraulic Flat Cam Advertised Duration 3

$1,109.84

View
COMP Cams Camshaft, XFI, Hydraulic Flat, Advertised Duration 260/272, Lift .499/.493, For Chevrolet Small Block, Each

COMP Cams Camshaft, XFI, Hydraulic Flat, Advertised Duration 260/272, Lift .499/.493, For Chevrolet Small Block, Each

$412.13

View
COMP Cams Cam/Lifters/Timing, Magnum, Solid Flat, Advertised Duration 270/270, Lift .468/.468, For Pontiac 265-455, Kit

COMP Cams Cam/Lifters/Timing, Magnum, Solid Flat, Advertised Duration 270/270, Lift .468/.468, For Pontiac 265-455, Kit

$831.27

View
COMP Cams Camshaft, Magnum, Solid Flat, Advertised Duration 270/270, Lift .468/.468, For Chevrolet Small Block, Each

COMP Cams Camshaft, Magnum, Solid Flat, Advertised Duration 270/270, Lift .468/.468, For Chevrolet Small Block, Each

$471.01

View
COMP Cams Camshaft, XFI AFM, Hydraulic Roller, Advertised Duration 270/282, Lift .572/.529, GM LT1 GEN V, Each

COMP Cams Camshaft, XFI AFM, Hydraulic Roller, Advertised Duration 270/282, Lift .572/.529, GM LT1 GEN V, Each

$963.89

View
CROWCAMS Camshaft, 317/326 Adv. Duration, .570/.570 in. Lift, For Holden V8 Hydraulic Roller, Each

CROWCAMS Camshaft, 317/326 Adv. Duration, .570/.570 in. Lift, For Holden V8 Hydraulic Roller, Each

$800.48

View