We use cookies to provide you with the best possible user experience. By continuing to use our site, you agree to their use. To learn more, view our Cookie Policy.
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
$322.95
Camshaft Material:
Valve Springs Required:
Assembly Lubricant Included:
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