What is the inspection port at lower center of this block for it only had a cover plate and gasket. 3306 PC.
So you can feed the little man with the hammer?
dip stick & oil filler port for certain apps where top of eng is hard to access
It seems obvious now that it has been pointed out. Thanks
Lucked out one time on that engine in a 12G , dropped valve screwed the piston above that hole . Went thru that hole to get to the rod instead of pulling the engine .