Block girdles, yay or nay

crackedback said
Only if you cut off the splayed cap section. Std OEM blocks are thin on web material. Makes the block weaker drilling those bolts.

Chevy SB use 4 bolts because they aren't near as beefy as Mopar caps or bolt sizing.

Very true. Anyone whose ever had one of each of those engines apart (I have many) will tell you just how much beefier the Mopar engines are. Even the 318s.