The COMP Cams Thumpr 226/241 hydraulic flat cam for Oldsmobile 260–455 is a high-performance street profile that works with stock converters but performs best with a 2000+ stall and matching gears. It produces a choppy, thumping idle while delivering lively midrange power for street-driven Olds V8s seeking a more assertive tone and response.
COMP Cams Camshaft OL 279T H-107 T Thumper