Ok guys I know cubic inch"s make power. But Im an old guy that remembers how easy 327s loved rpm and not just rpm but smooth rpm. Not the greatest technolgy in the 60s or the70s. Just how well would a 4.00 bore x 3.25 stroke 327 spinner do with aluminum heads, hydro rollers, and an hei distributer do? Lets just say 10:1 comp. Is the new 5.3 325 better Ithink not. No I do not want the longer stroke of the 383. Now does anyone have any longevity stories for the baby 1980 267 smallblock?