JDL,
I had a similar problem on my 65 Panel Truck, it turned out to be the battery cable. There was nothing wrong with it visibly, but we used a set of charger cables from the battery to the starter and it turned right over. Replaced the cable and no problems since, sttripped back the insulation on the old cable and about 6 inches backf from the tterminal end the cable was shot. Just a thought.
Mike


My old truck's still running good, my ticker's ticking like they say it should, I got supper in the oven, a good woman's loving, and even my bad days aint that bad...Yeah, I'm a lucky man!
1953 Chevy 3100 Shortbed

1965 C-30 Panel Truck
1963 C-20 Long/Fleet Pick-up California Black Plate