Hi there, I'm trying to break in a motor that I just built. It's a 1975 Pontiac 400. I have fire at the spark plugs but the motor will not crank. I had the motor to breifly crank but it had an electronic advance distributor in it and it would not run long. I replaced it with a correct vacuum advance distributor and I do have fire but it's not cranking. The motor will only turn over. I believe it's either a lack of gas or the timing is off. When setting the dist. I got the #1 cylinder on TDC and put the rotor button in toward the steering wheel of the car ( about 1 O'clock), then I put the #1 wire to the left of the rotor and wired Counter-clockwise. While trying to crank it I turned the dist. but it didn't seem to respond to any adjustments. Can anyone tell me what might be wrong?