Thumpr 227/241 Hydraulic Roller Cam for Pontiac 265-455

Thumpr™ 227/241 Hydraulic Roller Cam for Pontiac 265-455. High performance street, stock converter ok, best with 2000+ converter & gears, choppy/thumping idle. Distributor gear upgrade required.
Grind Number: 283THR7
Engine Family: Pontiac 265-455 c.i. 8 Cyl. (1955-1981)
RPM Operating Range: 1,700-5,500
Cam Type: Hydraulic Roller
Lifter Style: Hydraulic Roller
Camshaft Series: Thumpr
Camshaft Gear Attachment: 1-Bolt
Usage: Street/Performance
Valve Springs Required: Yes
Camshaft Material: Billet Steel
California Proposition 65: WARNING: Cancer and Reproductive Harm
Advertised Intake Duration: 283
Advertised Exhaust Duration: 303
Intake Duration at .050 Inch Lift: 227
Exhaust Duration at .050 Inch Lift: 241
Intake Valve Lift: 0.513
Exhaust Valve Lift: 0.498
Lobe Separation: 107
Assembly Lubricant Included: No
Component Part Number
CL-Kit Upgrade: CL51-600-11
K-Kit Upgrade: k51-600-11