Al2011

The picture below isn't my block but my block also has the same hole. It's the rectangle shape hole above the cam in the middle of the block. I can see the cam through the hole. Should it be blocked off, or did someone put it there for a reason? I'm asking because mine also has the rectangle but it looks like someone cut it because the inside isn't machined perfect it has jagged and sharp edges in side the rectangle.

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Redog

It's a factory hole. It's casted into the block so you can adjust the cam backlash. You are supposed to use a the "Turkey tray" gasket or a windage tray to keep the hot oil splashing out of the cam hole.

All blocks have this. In fact the Chevy and Mopar blocks have more than one hole

joe_padavano

Well, it's definitely there for oil drainback, in any case.

TripDeuces

I'm not gonna ask.