Joe,
Did you have the tank cleaned out at some point? If not, I would suggest doing that before putting gas into it.
When I tried to start my '52 after it had sat for many years, I poured gas into the tank, which made mud out of the crap in the bottom of it , which then got sucked through the gas line by the nice new fuel pump and jammed the tube. Then, the real fun began. The bottom of the tank was rusted internally and the gas started leaking onto my garage floor. When I pulled the tank off the car, I got 3 coffee cans full of crud out of it, and when I held it up you could see the sky through all the holes.