318
OK, I don't mean to bust balls here. But you did rebuild it right. Thats where the .020 overbore came in. I think I assumed to much here. As in you know whats what inside. Sorry about that.
I think it will run in the 15's in the 1/4 @ 90 - 93 mph.
Do you think it's a turd? Do you care what the numbers say when your driving down the road? I don't. Actually, I don't give a rats donkey about it. I'm just happy driving my turd down the road.
I gotta tell, late 70's to late 80's were tuff on power output on engines. My 400 from '78 is a dog. A dead dog at that. But i still get thumbs up and questions and wow! A big block,,,really! (OK kid, move along, move along...beat it! ...LOL)
The thing is, theres room to grow with it. What the future brings is the mystery and fun of it all.
Let us know how it runs!