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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.
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UPC 036584213239
Manufacturer COMP Cams®
Emissions Code
Engine Family Chevrolet 348-409 c.i. 8 Cylinder (1958-1965)
RPM Operating Range 2,500-6,000
Cam Type Hydraulic Flat Tappet
Camshaft Series Classic Thumpr
Camshaft Gear Attachment 3-Bolt
Usage Street/Strip
California Proposition 65 WARNING: Cancer and Reproductive Harm
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
Valve Timing Lift 0.006
Exhaust Close ATDC 49
Intake Open BTDC 43
Exhaust Open BBDC 84
Intake Close ABDC 71
Lifter Style Hydraulic Flat Tappet