Oldsmobile 350 400 425 455 Fabricated Valve Covers - Polished Speedmaster aluminum crankshaft pulleys are

Speedmaster aluminum crankshaft pulleys are manufactured from 356 aluminum that is heat-treated to T-6 specs

you'll want Speedmaster NPT-to-smooth hose adapters to give the installation that final

So can features such as full ball-bearing construction

Featuring a low profile design and a high flow runner design these manifolds will improve performance from 1500-6500 RPM range

Oldsmobile 350 400 425 455 Fabricated Valve Covers - Polished Speedmaster aluminum crankshaft pulleys areCover your valvetrain with a set of Speedmaster fabricated aluminum valve covers. They feature lightweight construction with a thick rail for gasket support. These valve covers are TIG welded and are manufactured to help eliminate distortion and ensure a perfect fit to help protect your valve covers and rocker arms. Speedmaster aluminum valve covers are the perfect fit for your engine.