Hydraulic: Everyday performance driving with stock converter, has noticeable idle. Everyday performance driving with stock converter, noticeable idle. Fits Ford 351 Cleveland, 351 Modified, 351...

Hydraulic: Great for mild street machines. Stock converter, 3.30-4.0 Gear, headers. Mild rough idle. Great for mild street machines. 2000+ stall, 3.30-4.0 gear, headers. Mild rough idle. Fits Ford...

Hydraulic Roller: Mild street performance. Slightly noticeable lope at idle. Works with stock converter and Gears. Mild street performance. Slightly noticeable lope at idle. Will work with stock...

Solid: Excellent torque. Everyday performance. Stock converter and 9:1 compression. Noticeable idle. Excellent torque. Everyday performance. 2000+ converter and 9:1 compression. Noticeable idle. Fits...

Thumpr 226/241 Hydraulic Flat Cam for Ford 351C, 351M-400M. High performance street, stock converter ok, best with 2000+ converter and Gears. Choppy/thumping idle. High performance street, stock...

Hydraulic: Good in street machine with mild converter, headers, Gears, 9:1-10:1 compression. Rough idle. Good in street machine with 2500+ stall, headers, gears, 9:1-10:1 compression. Rough idle...

Solid: Street machine with headers, mild converter, 9:1. Great mid-range power, mild rough idle. Street machine with headers, 2500+ converter, 9:1 compression. Great mid-range power. Mild rough idle...

Designed to deliver an aggressive, hard-hitting exhaust note at idle, the Thumpr camshaft series from COMP Cams also delivers excellent horsepower gains and a broad torque curve. A perfect choice for...

Solid-Best in large c.i.d. Street machine. 10:1 comp, 3500 stall, 4.10 Gear. Best in large c.i. street machine. 10:1 compression, 3500+ stall, 4.10 gear. Fits Ford 351 Cleveland, 351 Modified, 351...

Hydraulic Roller: Great in Street machines. Best above 3500 RPM. Good torque. Largest Cam with stock heads and intake. Great in street machines. Best above 3500+ RPM. Good torque. Largest cam with...

Solid-Best for 1/4-3/8 mile track, broad torque range. Best for 1/4-3/8 mile track, broad torque range. Fits Ford 351 Cleveland, 351 Modified, 351 Cobra-Jet, Boss 351, 400 Modified

Mutha' Thumpr 234/249 Hydraulic Flat Cam for Ford 351C, 351M-400M. High performance street/strip, needs 9:1 compression, 2500+ stall, intake, Gears and headers, rough idle. High performance ...