Chevy LS1 LS6 1.620" STD 8mm Stainless Steel Exhaust Valves Whether you are narrowing a

Whether you are narrowing a rear axle housing for bigger tires or just building a new housing for your street car

along with energy-efficient and cost-effective friction management

Speedmaster Aluminum Roller Rockers are extruded from 6061 T6 Aluminum

12-point head design and a larger-than-stock shank diameter

Chevy LS1 LS6 1.620" STD 8mm Stainless Steel Exhaust Valves Whether you are narrowing aWhen 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.