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Speedmaster Aluminum Roller Rockers are extruded from 6061 T6 Aluminum
These MidAir Series Manifolds includes a 4150 Series 1200 CFM Billet Throttle Body
all components are hand fit and assembled in USA for the ultimate in precision fit and finish
fuel injectors
The quality of these throttle bodies are better than others available today
Chevy BBC 454 1.880" STD 11/32" Stainless Steel Exhaust Valves Speedmaster Aluminum Roller Rockers areWhen 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.
