COMP Cams · New
Comp Cams Camshaft, P8 299Th R7 Thumpr
MPN 51-602-11 · Store SKU cca51-602-11
Supplier stock checked 11/8/2026, 7:55:18 AM UTC. Adding a part does not reserve it.
Request a return within 30 calendar days after delivery. New parts must be unopened and unused.
Shipping & returns ↗This policy does not limit rights required by law.Free standard shipping on eligible parts orders of $100 or more. Oversized and freight items excluded. Fitment, taxes, availability and final totals are confirmed before payment.
Product details
Big Mutha' Thumpr 243/257 Hydraulic Roller for Pontiac 265-455. Street/strip, needs 9.5:1 compression, 2800+ stall, intake, Gears and headers, very rough idle. Distributor Gear upgrade required. Street/strip, needs 9.5:1 compression, 2800+ stall, intake, gears and headers, very rough idle. Big Mutha' Thumpr 243/257 Hydraulic Roller Cam for Pontiac 265-455
Manufacturer fitment & guides
- Pontiac 265-455 V8
- Manufacturer-supplied application summary from Turn14; this may not be an exhaustive fitment list.
Part-specific notes
- Not CARB approved. Destination and intended-use restrictions must be checked before sale.
- Emissions acknowledgement required before purchase.
- California Proposition 65: Y