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 Stage 2 LST Max Horsepower Solid Roller Cam for LS 3-Bolt Engines

COMP Cams Stage 2 LST Max Horsepower Solid Roller Cam for LS 3-Bolt Engines

$1,134.30

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

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

$1,385.18

COMP Cams Camshaft, Nostalgia Plus, Solid Flat, Advertised Duration 299/309, Lift .581/.622, For Chevrolet Big Block 396-454, Each

COMP Cams Camshaft, Nostalgia Plus, Solid Flat, Advertised Duration 299/309, Lift .581/.622, For Chevrolet Big Block 396-454, Each

$691.42

COMP Cams Camshaft, Nostalgia Plus, Hydraulic Flat, Advertised Duration 286/293, Lift .483/.477, For Chevrolet Small Block, Each

COMP Cams Camshaft, Nostalgia Plus, Hydraulic Flat, Advertised Duration 286/293, Lift .483/.477, For Chevrolet Small Block, Each

$585.66

COMP Cams Camshaft, FSL AFM 208/220 D, 206/218 N Hydraulic Roller, GM LS GEN IV, Each

COMP Cams Camshaft, FSL AFM 208/220 D, 206/218 N Hydraulic Roller, GM LS GEN IV, Each

$1,355.99

COMP Cams Camshaft, Drag Race, Solid Roller Cam, Advertised Duration 317/337, Lift 0.822/0.793, For Chrysler 426 HEMI, Each

COMP Cams Camshaft, Drag Race, Solid Roller Cam, Advertised Duration 317/337, Lift 0.822/0.793, For Chrysler 426 HEMI, Each

$1,213.73