Rebuilt 318 Refuses to Start

I don't have timing tape to go off of to make it anything that big advanced. All I have is the 5 above and below TDC from the timing cover. Unless there's another way you know about? I installed the timing chain dot to dot and spun it by hand once to ensure they'd still match up. I've also pulled the dizzy up and rotated it 180 multiple times. I have like 15 hours in on trying to time this thing lol