Originally posted by 53fatfndr
Your post got my interest. I've never messed with a Chevy before, but how can you bore a 265 to a 283? Is it bore and stroke or...? I'm only familiar with Ford mods..., I've lived a sheltered life Most big increases in ci mods involve stroke changes.
265...3 3/4" x 3"

283...3 7/8" x 3"

Bore the 265 out 0.125" and you're there.