A little history about what I have and want to do: I've got a 272 that I'd like to bore out at least to .030 or .060 over the size of a 292, add a ground 312 crank with new rods and pistons. Final bore is going to be close to 3.810.



Now I know that the bores are different between the 272 and 292. The 272 is bored to 3.62 and the 292 has a larger bore of 3.75. Otherwise the stroke is the same- so, same crank, journals and what not. Is there any difference between the two blocks other than bore? I'd like to know if the 272 is the same block as the 292, and can handle the same over bore work that a 292 gets when it's bored and stroked out.



I've got a machine shop that's going to sonic the walls, to determine if it was offset ground from the factory and can handle the .130 to .140 over a stock 272 bore. I'm sure all of the supreme beings have seen this question before, but I'm still a small little pleb. Thanks for the help guys.

Heber City, UT (15 mins outside of Park City- basically it's in the mountains)

55 Effie