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Thumpr NSR 226/246 Hydraulic Roller Cams for Ford 4.6/5.4L Modular 3 Valve; Great idle with excellent power. Good mid-range torque and power gains above 4500 RPM. Compatible with stock valve springs, converter and gears, requires cam phaser upgrade and custom tuning.

Mutha' Thumpr Camshaft for Chrysler 383-440; Thumpr 235/249 Hydraulic Flat Tappet Cam for Chrysler 383-440

Big Mutha' Thumpr Camshaft for Chrysler 383-440; Thumpr 243/257 Hydraulic Flat Tappet Cam for Chrysler 383-440

Thumpr 227/241 Hydraulic Roller Cam for Chrysler 426 HEMI; High performance street, stock converter ok, best with 2000+ converter and gears, choppy/thumping idle.

Mutha' Thumpr 235/249 Hydraulic Roller Cam for Chrysler 426 HEMI; High performance street/strip, needs 9:1 compression, 2500+ stall, intake, gears and headers, rough idle.

Big Mutha' Thumpr 243/257 Hydraulic Roller Cam for Chrysler 426 HEMI; Street/strip, needs 9.5:1 compression, 2800+ stall, intake, gears and headers, very rough idle.

Thumpr 227/241 Hydraulic Roller Cam for Chevrolet Big Block GEN VI; High performance street, stock converter ok, best with 2000+ converter and gears, choppy/thumping idle.

Thumpr 227/241 Hydraulic Flat Cam for Pontiac 265-455; High performance street, stock converter ok, best with 2000+ converter and gears. Choppy/thumping idle.

Thumpr 227/241 Hydraulic Flat Cam for Chrysler 383-440; High performance street, stock converter ok, best with 2000+ stall and gears. Choppy/thumping idle.

Thumpr 227/241 Hydraulic Roller Cam for Cadillac 425, 472, 500; High performance street, stock converter ok, best with 2000+ converter and gears. Choppy/thumping idle.

Thumpr 226/241 Hydraulic Flat Cam for Cadillac 425, 472, 500; High performance street, stock converter ok, best with 2000+ converter and gears. Choppy/thumping idle.

Thumpr NSR Cams for ('15-'17) Ford 5.0L Coyote; See 243710 for Mutha Thumpr.