I don’t really have a recipe as I only ever had one 318 and I pulled it, gave it away, and put a 360 in its place. But it doesn’t know it’s only a 318 so I wouldn’t treat it like one. Heck I would go as far as releaving the top of the bores like I used to do back in the 1970’s and early 1980’s to give some more valve to wall clearance. You would be surprised to see what we used to do to the top of a block.
