I'm taking a set of "452" casting heads to the machine shop for a re-build. I am having the guides replaced for use with 11/32" valve stems. So far the only place that I have found valves that will work for what I am doing are from Edelbrock or Ferrea. Edelbrock Intake 9641, Exhaust 9643, or Ferrea F6307 and F6306. Edelbrocks are about half as much as the Ferrea. Anyone know of anyother sources of valves with 11/32" stems that will work in stock heads?
