What's the hole in this engine? (non-G8)

[polo]

My buddy bought an engine from an older Ford Bronco that he was thinking about rebuilding, until he noticed this. What's the jagged-edge hole in it from?

[GRRRR8]

That hole looks like its right behind where the distributor bolts in. Not sure what it is, but it doesnt look like it would effect anything.

[polo]

Oh yeah? That's good news. Thanks, Charlie.

[jwhitten]

Does the hole go all rhe way through? If not I would say use it its not in an important area like stated above

[polo]

Does the hole go all rhe way through? If not I would say use it its not in an important area like stated above

It doesn't go all the way through.

[dukeofpg]

The hole is in a galley where there is oil. I would pump a little oil into it and see where it goes. The worst it could be is a water jacket hole. My guess is that it is an air pocket from the original casting. Good luck.