360 LA getting oil in #3 cylinder.

If it’s in the pan, leave it there. You’d be surprised what you find in oil pans. It won’t hurt a thing being in there.
I found two rod bolts in the pan of a 360 I recently tore down. The rods were all bolted up as expected, and it didn't look like it had ever been apart, not even the valve covers. I dunno how that could've happened.