Strange 318 Block
Notice the Mark's where it looks like the ones of misplaced core/freeze plug holes.
This 318 cast 12-23-71 block has the same outlines or 'ghost' core plug imprints. But ththe main webs are machined flat. It's not a race block though...but it bored 4.040
How about the cast lines left on the main webs. Opposing main web faces .
Notice the Mark's where it looks like the ones of misplaced core/freeze plug holes.
This 318 cast 12-23-71 block has the same outlines or 'ghost' core plug imprints. But ththe main webs are machined flat. It's not a race block though...but it bored 4.040
