How big of a 4 barrel on a stock 1970 318?

Hey technical editor:rofl::rofl::rofl:.that one always gets me,people have been running STOCK intermediate shafts in performance motors for years..but when the oil pump seizes up that shaft could be made on kryptonite and it'll STILL snap..technical editor LMFAO:rofl::rofl::rofl:..

That'll be your little secret.