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Featuring a low profile design and a high flow runner design these manifolds will improve performance from 1500-6500 RPM range
you'll want Speedmaster NPT-to-smooth hose adapters to give the installation that final
Speedmaster DNA roller rockers are the toughest and most innovative rockers we've ever made
increasing rigidity and eliminating leakage
Oldsmobile 350 400 425 455 Fabricated Valve Covers - Polished Featuring a low profile designCover 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.
