The degree markings on my Chevy 350 Small Block engine are all scratched off.
I can't tell where the timing is on a new motor i bought.
It wouldn't start when i put it in the car so i found top dead center and that still didn't work. I flipped the distributer around 180 degrees and the car runs now but will not accelerate. I believe my motor is 180 degrees off but i have no markings to figure out where to go.

How do i time this motor COMPLETELY from scratch?
This is my first motor swap and I'm really stuck so i appreciate any help anyone can give me. Thanks!