I had a similar problem with my 53 3100 with a 235. It would idle in the driveway for as long as I had patience, but I could only drive it about 1/2 mile before it would die. It was a almost completely clogged fuel line from the tank to the fuel pump. Only enough flow to barely fill up the bowl while idling. Then it would run dry when I tried to drive.
For your consideration,
Leon
