Running a built 421, 65 GTO, Tri-power, considering a 66 Tri-power setup
My wife's 65 GTO is running a built 421 and I am considering moving from the smaller center carb 64/65 setup to a 66 for the larger center carb/more power. The carb setup on her motor MUST be a Tri-power, so it seems the only move up in performance would be to go to the 66 Tri-power setup. Can you give us suggestions on sources for the 66 manifold, center carb, and a "tuner" who could take the manifold and carbs and modify them for the best performance? I can provide specs on the roller cam, CR, rear gear (yet to be determined, but likely a 3.75 or 3.90) etc.