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

Big Mutha Thumpr: Street applications. Will work with a stock converter, but functions best with 2000+ converter and gears. Thumping idle.

SKU
91-600-5
$299.49
 
Engine Family: Buick Nailhead 364, 401, 425 c.i. 8 Cylinder (1957-1966)
RPM Operating Range: 2,000-5,800
Grind Number: 279TH7
Cam Type: Hydraulic Flat Tappet
Lifter Style: Hydraulic Flat Tappet
Camshaft Series: Classic Thumpr
Usage: Street/Performance
Valve Springs Required: Yes
Camshaft Material: Cast Iron
California Proposition 65: WARNING: Cancer and Reproductive Harm P65Warnings.ca.gov
Advertised Intake Duration: 279
Advertised Exhaust Duration: 297
Intake Duration at .050 Inch Lift: 227
Exhaust Duration at .050 Inch Lift: 241
Intake Valve Lift: 0.478
Exhaust Valve Lift: 0.465
Lobe Lift Intake: 0.319
Lobe Lift Exhaust: 0.31
Lobe Separation: 107
Intake Centerline: 102
Assembly Lubricant Included: Yes
Valve Timing @ 0.006 Lift:
Exhaust Close ATDC: 41
Exhaust Open BBDC: 76
spec-card-valve-timing
Intake Open BTDC: 36
Intake Close ABDC: 63
Component Part Number
Break-In Lube: 159