Thumpr Cam by Comp Cams
The Muscle-car sound is back and nastier than ever, Thumpr™ Cams deliver incredible exhaust lope and impressive performance
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 fact, one of the most frequent questions fielded when customers call the CAM HELP® tech line is “what cam will give my engine a mean-sounding idle?” In response to this popular demand, the COMP Cams® engineering team proudly introduces the Thumpr™ series of camshafts.
The Thumpr™ Camshafts are a new series of hydraulic flat tappet designed for use in Small & Big Block Chevy, Ford 351 Windsor and Small Block Chrysler engines.
The reason that the new Thumpr™ Camshafts have such an aggressive exhaust note is that the lobe profiles and grind characteristics chosen by the COMP Cams® engineers produce 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 without negatively impacting the power output or streetability.
Thumpr™ Camshafts are available in three different grind profiles for each engine, all of which will produce a rough, racy exhaust note and impressive amounts of horsepower and torque. Their cutting-edge design means that they will deliver a substantial power increase over "tamer" camshaft grinds without sacrificing reliability or ease of maintenance
This product is in the following categories:
Ford, Lincoln, Mercury
Part #: 31-601-5
Thumpr : High performance street, stock converter ok, best with 2000+ converter and gears. Choppy/thumping idle.
Part #: 31-602-5
Ford 221-302, 8 Cylinder, 1963-1995 (includes 221,260,289,302) For Carb Engines. Mutha' Thumpr™ : High performance street/strip, needs 9:1 compression, 2500+ stall, intake, gears and headers, rough idle. Hydraulic Flat Tappet Camshaft.
Part #: 31-603-5
Ford 289-302 C.I. 8 cyl. 1963-1995. Big Mutha' Thumpr™ : Street/strip, needs 9.5:1 compression, 2800+ stall, intake, gears and headers, very rough idle. Hydraulic Flat Tappet Camshaft.
Part #: 35-600-4
Ford 351W 8 cyl. 1969-1995. Hydraulic-(Thumpr™) High performance street, stock converter ok, best with 2000+ converter and gears, choppy/thumping idle. Thumpr™ Hydraulic Flat Tappet Camshafts.
Part #: 35-601-4
Ford 351W 8 cyl. 1969-1995. Hydraulic-(Mutha' Thumpr™) High performance street/strip, needs 9:1 CR, 2500+ stall, intake, gears, and headers, rough idle. Thumpr™ Hydraulic Flat Tappet Camshafts.
Part #: 35-602-4
Ford 351W 8 cyl. 1969-1995. Hydraulic-(Big Mutha' Thumpr™) Street/strip, needs 9.5:1 CR , 2800+ stall, intake, gears, and headers, very rough idle. Thumpr™ Hydraulic Flat Tappet Camshafts.