What year 360's have the "thicker bore"

The "rumor" used to say 1976 or earlier, especially 71-74 blocks, had the same casting cores as 340's and therefore had thicker walls. I never went past .030 on mine.
If you go to a 4.060 bore after sonic testing it does make a 372 or close to it.
I did luck into a 360 4V factory shot peened crank they used to talk about in a 4 star rebuild I bought cheap.
Instead of the usual AAWJ foundry marks this one has CMD cast into it. Supposedly because they were made by the same foundry that made some GM cranks. I wouldn't kill myself looking for one though.

Magnums and any LA blocks from EFI vehicles usually have less wear due to precise fuel metering. And due to the fact they are 20 years+ newer!