I measured a '72 440 short block I have.

.155 down in the hole.

I brought it home from the junk yard years ago, threw some new gaskets, the bigger summit brand cam, a new timing chain in it, and ran it in my Diplomat for years.

Had about $600 in it and it ran great. Only reason I even pulled it out was it sounded like it was knocking. Turned out the clutch fork pivot had bent and the fork was rattling around.
Bearings still look great and there's no ridge in the cylinder after years of thrashing it. Its probably gonna end up going in my Newport sometime this summer.