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Big Mutha' Thumpr 243/257 Hydraulic Flat Cam and Lifter Kit for AMC 290-401

$407.95
Big Mutha' Thumpr™ 243/257 Hydraulic Flat Cam and Lifter Kit for AMC 290-401. Street/strip, needs 9.5:1 compression, 2800+ stall, intake, gears and headers, very rough idle.
TEMPORARILY OUT OF STOCK
SKU
CL10-604-5
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More Information
UPC 036584214397
Manufacturer COMP Cams®
Emissions Code
Engine Family AMC 290-401 c.i. 8 Cylinder (1966-1991)
RPM Operating Range 2,500-6,400
Cam Type Hydraulic Flat Tappet
Camshaft Series Thumpr
Camshaft Gear Attachment 1-Bolt
Usage Street/Strip
California Proposition 65 WARNING: Cancer and Reproductive Harm P65Warnings.ca.gov
Advertised Intake Duration 295
Advertised Exhaust Duration 312
Intake Duration at .050 Inch Lift 243
Exhaust Duration at .050 Inch Lift 257
Intake Valve Lift 0.512
Exhaust Valve Lift 0.497
Lobe Separation 107
Lifter Style Hydraulic Flat Tappet
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