Buying Short Block

I'd do some math on what CR you are going to have with those heads on a 1985 engine out of the 8:1 smog era... not that you need to have a 11:1 screamer, but if those are truly 70cc chamber heads you may be pretty low. 62cc would probably yield much better. I will admit i have no clue how far in the hole, or what the dish on a oem 1985 318 piston would be. but i can't imagine it's going to yield much for CR.

don't forget those are internal balance, and have a unique balancer, and oil pan that does not interchange with a 360.

as far as inspection. make sure it turns over, no rust in the cylinder walls.

and lastly...i bought a fresh rebuild, running, carb to pan 318 that was fairly moderate for $750 a few years back. I hope you're getting this 1985 short block for a song...