I've got that same engine as my "spare". It still has the 16 heads and 2 bbl carb. That casting # is the same as the Ram Air 3 block. I would think that our blocks are 2 bolt mains, but drilled for 4 bolt mains. Are you going to be rebuilding this engine? I would love to know if these non RA blocks are drilled for 4 bolt mains...
--Kyle
67 Verdoro Green 400 Front bench w/auto on column Now excepting- free, ready to bolt on, Pontiac Aluminum Heads... Thanks to John(Hammered)-- This project is REBORN!! http://s903.photobucket.com/albums/ac237/lupdiesel/
