ok guys im in the market for valves,now im doing a built lsvtec setup and im shooting for 450's pump and 550's racegas.now i just want to know what size valves would be preferred for a setup of this size and power thanx h-t.

 

you could use oem. i spent last year making low 400s with stock valves, and will be using them again this year. your machinist should be able to check them over and make sure they are ok before you use them