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 Magnum Hydraulic Flat Advertised Duration 270 / 270 Lift .4

COMP Cams Cam / Lifters / Valvetrain Magnum Hydraulic Flat Advertised Duration 270 / 270 Lift .4

$1,030.98

COMP Cams Cam / Lifters / Valvetrain High Energy Hydraulic Flat Advertised Duration 252 / 252 Li

COMP Cams Cam / Lifters / Valvetrain High Energy Hydraulic Flat Advertised Duration 252 / 252 Li

$1,099.30

Crow Cams Camshaft, Holden V8 304/355 EFI Hydraulic, Adv. Duration 282/282, Valve Lift 0.493/0.493

Crow Cams Camshaft, Holden V8 304/355 EFI Hydraulic, Adv. Duration 282/282, Valve Lift 0.493/0.493

$473.20

Trick Flow Camshaft, Left, Hydraulic Roller, Adv. Duration 276/276, Lift .580/.580, Lobe Sep. 114, For Ford 4.6L/5.4L 2V, Ea.

Trick Flow Camshaft, Left, Hydraulic Roller, Adv. Duration 276/276, Lift .580/.580, Lobe Sep. 114, For Ford 4.6L/5.4L 2V, Ea.

$1,133.90

COMP Cams Camshaft, High Energy, Hydraulic Flat, Advertised Duration 252/252, Lift .439/.439, For Buick 400, 430, 455, Each

COMP Cams Camshaft, High Energy, Hydraulic Flat, Advertised Duration 252/252, Lift .439/.439, For Buick 400, 430, 455, Each

$581.99

COMP Cams Cam/Lifters/Timing, Xtreme Energy, Hydraulic Flat, Advertised Duration 250/260, Lift .443/.448, For Oldsmobile 260-455, Kit

COMP Cams Cam/Lifters/Timing, Xtreme Energy, Hydraulic Flat, Advertised Duration 250/260, Lift .443/.448, For Oldsmobile 260-455, Kit

$785.04