Oldsmobile 400 425 455 1.680" STD 11/32" Stainless Steel Exhaust Valves and reduced friction to extend

and reduced friction to extend their life

Their single-idler design has CNC-machined components and they are easy to install

These alternator brackets feature a stout billet aluminum construction and include all mounting hardware

Suits: 1-149-004 and 1-149-005 Manifolds

Oldsmobile 400 425 455 1.680" STD 11/32" Stainless Steel Exhaust Valves and reduced friction to extendWhen it's time for valves, don't cut corners. Get genuine Speedmaster stainless steel valves. They're made from a tough, stainless steel alloy and are carefully designed to increase gas flow for more power. What's more, they have hardened stem tips for durability and are swirl polished.