Engine Mechanical problem
1985 Chevy El Camino V8 Two Wheel Drive Automatic

I put a new timming chain and gears in, i lined up the marks dot to dot. so i put every thing back on and go to start it and it wont start . so i pull the distributor out turned it 180 dagrees ,cranked cranked cranked and cranked and it started to back fired,so i pull it out again and turned it 180 again and it started, so i ran it for a few minutes and one of the heater hoses sprong a leak so i turned it off,and fixed the hose and went to start it back up and it wont start help please