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Big Mutha' Thumpr 235/249 Hydraulic Roller Cam for GM LS GEN III/IV
Big Mutha' Thumpr 235/249 Hydraulic Roller Cam for GM LS GEN III/IV. Street/strip, needs 9.5:1 compression, 2800+ stall, intake, gears, & headers, very rough idle.
In stock
SKU
54-602-11
$515.95
Engine Family: GM LS GEN III/IV 3-Bolt 8 Cylinder (1997-2015)
RPM Operating Range: 2,600-6,800
Grind Number: 291THR9
Cam Type: Hydraulic Roller
Lifter Style: Hydraulic Roller
Camshaft Series: Thumpr
Usage: Street/Strip
California Proposition 65: WARNING: Cancer and Reproductive Harm P65Warnings.ca.gov
Advertised Intake Duration: 291
Advertised Exhaust Duration: 311
Intake Duration at .050 Inch Lift: 235
Exhaust Duration at .050 Inch Lift: 249
Intake Valve Lift: 0.573
Exhaust Valve Lift: 0.558
Lobe Lift Intake: 0.338
Lobe Lift Exhaust: 0.329
Lobe Separation: 109
Intake Centerline: 103
Exhaust Close ATDC: 46
Intake Open BTDC: 41
Exhaust Open BBDC: 85
Intake Close ABDC: 70
Camshaft Gear Attachment: 3-Bolt
Component
Part Number
Break-In Lube: 159
Recommended Dual Valve Spring Kit(s): 26925TS-KIT
Valve Springs: 26918-16