Multiple U.S. Warehouse LocationsBroken ApexFree shipping on qualified orders over $100*
The COMP Cams Mutha' Thumpr 234/249 hydraulic flat cam for Oldsmobile 260–455 targets high-performance street/strip use and requires about 9:1 compression, a 2500+ stall converter, intake work, gears and headers. It delivers strong power when supported by these mods and produces a rough idle characteristic of aggressive street cams.
COMP Cams Camshaft OL 287T H-107 T Thumper
