Comp Cams Lifters / Valvetrain Mutha' Thumpr Hydraulic Flat Ad K33-601-5

Notes: Cam / Lifters / Valvetrain Mutha' Thumpr Hydraulic Flat Advertised Duration 286 / 304

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. COMP Cams engineers introduce the Thumpr camshaftsa 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 overlapto 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.