Are your sparkplug wires connected to the right posts on the distributor? Dump enough fuel in there (goosing the throttle a little) and have a spark plug finally catch hold of some gas while the intake valve is open, that'll do it every time.
On the other hand, if everything is hooked up right and you don't have any shorts or anything, then I have absolutely no clue.
First paragraph is from personal experience, after 37 straight hours of not even sitting down during my engine install, Mr Smart Man (me) hooks up the spark plug wires......sequentially.
The garage sounded like a 12-gauge firing range.
Good luck, keep us posted!!