Found this in my oil pan. Cannot figure out where it broke off of.
The radius is too small to be from the mains or the cam tunnel. It's just about right for the distributor hole, but I can't spot any missing bit from that in the block. Oil pump looks intact. Too wide to be from either end of a connecting rod. Looks to have some wear on the outside like something spins on it or it spins in something. It's cast iron, not aluminum. I have the block pretty much apart except for the crank, rods, pistons and cam. I'm very confused...