COMP Cams Big Mutha' Thumpr 299THR7 Retro-Fit Hydraulic Roller Camshaft for Small Block Ford (289-302 Firing Order)

High performance street/strip, needs 9:1 compression, 2500+ stall, intake, gears and headers, rough idle.

COMP Cams Mutha' Thumpr 291THR7 Retro-Fit Hydraulic Roller Camshaft for Small Block Ford (289-302 Firing Order)

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 muscle cars and street rods, the Thumpr series' early...

COMP Cams Thumpr 283THR7 Retro-Fit Hydraulic Roller Camshaft for Small Block Ford (289-302 Firing Order)

Hydraulic - Magnum: Performance use. Best with mild converter, headers, 9:1 compression and lower gears. Rough idle.; 270/270 Advertised Duration, 224/224 Duration .050", .500"/.500" Lift, 110 Lobe Separation; Valve spring upgrade required; 289-302...

An older member of the COMP Cams grind family, the Magnum series of camshafts offers excellent performance gains over stock without the added wear and tear associated with more aggressive camshafts. Ideal for use with higher compression ratio engines...

Great for street/strip. 4 speed or automatic with 3500+ stall. Intake, headers, low gears, very rough idle, 10:1 compression.

Performance cam for street machines. Lower axle ratio and 2500+ stall with headers. Rough idle. Magnum Muscle Camshaft for 289c.i. 1965-68, factory 271 HP.

An older member of the COMP Cams grind family, the Magnum series of camshafts offers excellent performance gains over stock without the added wear and tear associated with more aggressive camshafts. Ideal for use with higher compression ratio engines...

Limited street use or bracket race. 11:1 compression, intake and exhaust. Radical idle. Good for 4 speed or 3500+ stall, 10.5:1+ compression.

Street/strip use. 3500+ stall or 4 speed, 4.10 gear and 10.5:1 compression. Very rough idle.