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Classic Mutha' Thumpr 227/241 Hydraulic Flat Cam Buick 364, 401, 425 Nailhead

Classic Mutha' Thumpr 227/241 Hydraulic Flat Cam Buick 364, 401, 425 Nailhead

Classic Big Mutha Thumpr 227/241 Hydraulic Flat Cam Buick 364, 401, 425 Nailhead

$453.95
Classic Big Mutha Thumpr™ 227/241 Hydraulic Flat Cam Buick 364, 401, 425 Nailhead. Street/strip needs 9.5:1 compression, 2800+ stall, intake, gears and headers, very rough idle.
Availability: In stock
SKU
91-602-5
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More Information
UPC 036584213291
Manufacturer COMP Cams®
Emissions Code
Engine Family Buick Nailhead 364, 401, 425 c.i. 8 Cylinder (1957-1966)
RPM Operating Range 2,500-6,400
Cam Type Hydraulic Flat Tappet
Camshaft Series Classic Thumpr
Usage Street/Strip
California Proposition 65 WARNING: Cancer and Reproductive Harm P65Warnings.ca.gov
Advertised Intake Duration 287
Advertised Exhaust Duration 305
Intake Duration at .050 Inch Lift 235
Exhaust Duration at .050 Inch Lift 249
Intake Valve Lift 0.49
Exhaust Valve Lift 0.475
Lobe Lift Intake 0.334
Lobe Lift Exhaust 0.324
Lobe Separation 107
Intake Centerline 102
Valve Timing Lift 0.006
Exhaust Close ATDC 49
Intake Open BTDC 44
Exhaust Open BBDC 84
Intake Close ABDC 71
Lifter Style Hydraulic Flat Tappet
Recommended Components
Component Part Number
Break-In Lube 159
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