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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. Street/strip, needs 9:1 compression, 2500+ stall, intake, gears and headers, very rough idle.
Available Soon
SKU
91-601-5
TEMPORARILY OUT OF STOCK, ORDER NOW!
$408.56
$453.95
Engine Family: Buick Nailhead 364, 401, 425 c.i. 8 Cylinder (1957-1966)
RPM Operating Range: 2,200-6,100
Grind Number: 287TH7
Cam Type: Hydraulic Flat Tappet
Lifter Style: 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: 0.327
Lobe Lift Exhaust: 0.317
Lobe Separation: 107
Intake Centerline: 102
Exhaust Close ATDC: 45
Intake Open BTDC: 40
Exhaust Open BBDC: 80
Intake Close ABDC: 67
Component
Part Number
Break-In Lube: 159
