Buick 350 2 barrel non-original engine
try to see what the two letter engine code stamping is, it should be located between the #1 and #3 spark plugs on the deck of the block. you could have **** near anything in there and there's up and downsides to everything. newer than 74(?) will have stronger capscrew rods but compression will suck.
71-74, the compression will probably be 8.5:1. not the greatest but definitely not the craptastic <8:1 of later years.
1968-70 should be between 9:1 and 10:1 depending on how it was originally configured. you get lucky and you'll come up with a 1970 "SP" code engine that had the 2v intake swapped onto it for some reason and you'll have 10.25:1 and 315hp on the factory rating. i don't really think you're going to hit the lottery like that though.
it's probably a 74 or earlier because it looks like it's the factory Buick Red. later engines had blue paint.
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