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

Big Mutha Thumpr: Street/strip , needs 9:1 compression, 2500+ stall, intake, gears and headers, very rough idle.

SKU
91-601-5
$299.49
 
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
Valve Springs Required: Yes
Camshaft Material: Cast Iron
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
Assembly Lubricant Included: Yes
Valve Timing @ 0.006 Lift:
Exhaust Close ATDC: 45
Exhaust Open BBDC: 80
spec-card-valve-timing
Intake Open BTDC: 40
Intake Close ABDC: 67
Component Part Number
Break-In Lube: 159