Chevy BBC 454 1.880" +100 11/32" Stainless Steel Exhaust Valves Speedmaster Chevy LS2 rotating assembly

Speedmaster Chevy LS2 rotating assembly featuring a precision-ground forged 4340 steel crankshaft

2 SFI Approved and will withstand the extreme power and rpm of your performance application

protective

If you are looking for a manifold to use with your 8-71 or 6-71 supercharger

don't cut corners

Chevy BBC 454 1.880" +100 11/32" Stainless Steel Exhaust Valves Speedmaster Chevy LS2 rotating assemblyWhen 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.