why does it idle but not take fuel

OK, this may be a long shot, but it happened to me. I had the same problem with my old 64 Belvedere, which had a 1970 318 in it at the time. The guy who owned it before me swore that it was plugging the fuel filter and would run as you explain yours does. I did everything you ran through, but it would still run perfect at idle, but hit the gas and it was erratic as all getout and could not be trusted further than the driveway. I explained this to an old school friend of mine and he told me to change the condenser in the points system. I had my doubts about this but seeing as the condenser was only a buck, I decided to give it a try. Lo and behold, it worked!!! I don't know why, but I think as he explained it, the condenser was defective and would load up with spark and flood the system with spark, effectively cancelling the spark signal from the points to the plugs!! Ain't sayin' this is your problem, but seeing as how you have points, it's worth the buck to eliminate this as a possible problem!! It worked for me!!! Good luck, Geof