[mikegi]

have a chance to buy a 400 small block out of a 72 caprice.the question is how do i tell if it is a 400 ( besides the #s on block)do 400s have 3 freez plugs? and the guy said it has a 2 barrel on it.must travel about 100 miles to get it ,just don't want to get there and find out it's a 307 (not that i have done that) lol.