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. In fact, one of the most frequent questions from customers is, "What camshaft will give my car that mean-sounding idle?" For the performance and sound you demand, 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 High Energy / Marine Hydraulic Flat Advertised Duration 260

COMP Cams Cam / Lifters / Valvetrain High Energy / Marine Hydraulic Flat Advertised Duration 260

$1,058.99

COMP Cams Cam/Lifters/Timing, Magnum/Magnum Muscle, Solid Flat Cam, Advertised Duration 282/282, Lift 0.528/0.528, For Ford 221-302

COMP Cams Cam/Lifters/Timing, Magnum/Magnum Muscle, Solid Flat Cam, Advertised Duration 282/282, Lift 0.528/0.528, For Ford 221-302

$973.08

COMP Cams Cam / Lifters / Valvetrain Nitrous HP Hydraulic Flat Advertised Duration 262 / 280 Lif

COMP Cams Cam / Lifters / Valvetrain Nitrous HP Hydraulic Flat Advertised Duration 262 / 280 Lif

$1,195.29

COMP Cams Camshaft, Magnum, Hydraulic Roller, Advertised Duration 260/260, Lift .510/.510, For Chevrolet Big Block 396-454, Each

COMP Cams Camshaft, Magnum, Hydraulic Roller, Advertised Duration 260/260, Lift .510/.510, For Chevrolet Big Block 396-454, Each

$1,062.34

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

$2,471.39