Ron,
Had the exact same problem on a 65 Satellite big block. Installed a 3/16 vapor return line with approx.060" orifice restriction from thefuel pressure regulator guage port to the fill tube in the rear.Carter electric pump,no mech pump,dual quads then later a 950 Holley.Never ever had the problem again.This info comes from an article many years ago by Richard Ehrenberg in Mopar Action.

62 Dodge Dart Wagon 65 Plymouth Satellite