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Classic Big Mutha' Thumpr 242/257 Hydraulic Flat Cam for Chevrolet 348-409
Classic Big Mutha' Thumpr™ 242/257 Hydraulic Flat Cam for Chevrolet 348-409. Street/strip, needs 9.5:1 compression, 2800+ stall, intake, gears and headers, very rough idle.
In stock
SKU
48-602-5
$290.66
$322.95
Engine Family: Chevrolet 348-409 c.i. 8 Cylinder (1958-1965)
RPM Operating Range: 2,500-6,000
Grind Number: 295TH7
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: 294
Advertised Exhaust Duration: 312
Intake Duration at .050 Inch Lift: 242
Exhaust Duration at .050 Inch Lift: 257
Intake Valve Lift: 0.537
Exhaust Valve Lift: 0.521
Lobe Lift Intake: 0.307
Lobe Lift Exhaust: 0.298
Lobe Separation: 107
Intake Centerline: 102
Exhaust Close ATDC: 49
Intake Open BTDC: 43
Exhaust Open BBDC: 84
Intake Close ABDC: 71
Camshaft Gear Attachment: 3-Bolt
Component
Part Number
Break-In Lube: 159
