Exhaust valve PONTIAC 400 - 428 - 455 FA-F6259

The Competition 6000 series valves are designed to provide excellent reliability in high pressures and cams, at a budget price. They are more durable than our competitors' best valves, and we use our exclusive two-step slow forging process to manufacture the valves, using EV8 stainless steel on the intake and exhaust valves. We provide a special heat treatment and stress relieving process with hard chrome shafts and hard friction welded ends. They are finished with a polished head. The valves have flow enhancements to provide the power needed for today's advanced racing engines Fits: PONTIAC 400 - 428 - 455 Dimensions: Head Diameter: 1.66 "Shaft Diameter: 11/32" Overall Length: 5.11 "Tip Length: 0 , 25 "The Competition 6000 series valves have been designed to provide excellent reliability under high pressure conditions and cams, at budget prices. They have higher durability than the best valves of our competitors. For the production of valves, we use our exclusive two-stage slow forging process, using EV8 stainless steel at inlet and exhaust valves. We provide a special process of heat treatment and stress relieving, along with hard chromium-plated stems and hard tips welded by friction. They are finished with a polished head. The valves have flow improvements to provide the power needed for today's advanced race engines.Fits: PONTIAC 400 - 428 - 455Dimensions: Head diameter: 1.66 "Stem diameter: 11/32" Overall length: 5.11 "Tip length: 0 , 25 "