360 Rebuild for 1974 Swinger

No go. Lots of backfiring out the intake including a big one out the exhaust that sounded like a canon. I'm thinking after reading other forums that it might be a 180 degree dizzy problem. I sure hope so, because I don't relish pulling everything off the front end to check my timing chain. So tomorrow, I'll crank and check for pressure on #1 to be sure I'm on the compression stroke and see where the distributor is pointing. One thing I know for sure, I have fuel and spark and compression, gotta be timing.