COMP Cams Thumpr Camshaft Hydraulic Flat Tappet Lift 0.491/0.476" Duration 278/296 - 107 LSA Mounting Solutions With a cast pulley

With a cast pulley

That's why the fastener experts at ARP have developed special bolts that are far superior to OEM hardware

Impact’s helmet shields feature superior dimensional stability

and blue (yellow available but not with matched boots)

carbureted or EFI

COMP Cams Thumpr Camshaft Hydraulic Flat Tappet Lift 0.491/0.476" Duration 278/296 - 107 LSA Mounting Solutions With a cast pulleyHigh performance street, stock converter ok, best with 2000+ converter and gears. Choppy thumping idle. CamShaft, OL 279T H 107 T THUMPR Fits 1967+ Oldsmobile 260, 307, 350, 403, 400, 425 and 455 V8The COMP Cams philosophy has never changed: make the highest performing products possible and lead the industry in technological development. One thing COMP Cams has never forgotten: Performance is defined by what happens out on the race track. Because no