I was cleaning my oilpan yesterday, and shaking it about and such to get all the oil out that I could, and out from the dark depths came out a piece of metal. It is about 1/8" thick, cast iron, machined, one side black, the other side silver with marks as if it has rubbed against something spinning. It is also marked "GM 8P" The two side curved edges look original, but every other side looks like it was snapped from a larger piece. I looked everywhere in the crankcase with a flashlight to try and find where it came from, but there is nothing! And it came from such a deep place under the second level (you can see in the photo)of the oil pan, I dont know where it came from.

The engine is a L6 230 from a 65 chevy, anyone recognize this piece or know where it could have come from??

Here are some photos.

http://i175.photobucket.com/albums/w128/dougboys/Other%20Crap/IMG_6228.jpg?t=1175891336
http://i175.photobucket.com/albums/w128/dougboys/Other%20Crap/IMG_6229.jpg?t=1175891380
http://i175.photobucket.com/albums/w128/dougboys/Other%20Crap/IMG_6230.jpg?t=1175891394