"under hood temps are extremley high"
Hi-Jacking this thread for a moment, Bill, while running with those high temps, do you experience any perculating/vapor locking problems? I fought mine all through August out here when outside temps were over 100. I replaced everything from gas cap to intake manifold with new including tank, filter, elec pump, fuel line, carb (Edel 600), 2" phonelic carb spacer and the problem finally left after the hottest weather left!
(292 with LPG pistons, AFCO alum rad, A/C, no hills or trailers!)
