My question was purely rhetorical, but since I have a teener that would need to be overbored . . . . . I was just wondering. I agree a
360 block would be best but are non-existent in my neck of the woods. I found out after the fact that a friend of mine took a workable 360 block (as well as a couple of 400s and 1 440 to the scrapper - he needed basically gas money!
I've done the 4" stroke on my 318 with an over bore of fourth thousands I think it works out to a 392. I put rhs heads on it 4 speed an 410 gears with a small supercharger an decent sized cam an when I wear this one out I'll do another.