I have the same problem with my 65 Impala SS. One of my buddies sent me over this diagram and told me to change out this wires in RED (This may be totally wrong but just wanted to pass the info I got). I have yet to do it since I have my 65 in Vegas right now getting painted. I am also going to look up the Starter Solenoid Heat Shield that 67ChevyRedneck posted as well. Anyways hopes this helps. I'm going to try both. Sucks going for a cruise and when it's time to go your car is totally dead and boom 5 mins later it starts like nothing was wrong.
