COMP Cams · New
COMP Cams Thumpr 235/249 Retro-Fit Hydraulic Roller Complete Kit For Oldsmobile 260-455
MPN K42-601-11 · Store SKU ccaK42-601-11
Supplier stock checked 11/7/2026, 10:42:21 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
K-KIT - Complete Kit Includes: Camshaft, Lifters, Valve Springs, Retainers, Valve Locks, Valve Stem Seals, Timing Chain Set, Assembly Lube (in flat tappet applications), Decals and Instructions. High performance street/strip, needs 9:1 compression, 2500+ stall, intake, gears and headers, rough idle. Mutha' Thumpr 235/249 Hydraulic Roller K-Kit for Oldsmobile 260-455
Manufacturer fitment & guides
- Fits 1967+ Oldsmobile 260, 307, 350, 403, 400, 425 and 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