The spun rod bearing. This was the metal I seen in the oil pick up tube. I’m sure had I driven it anymore. I it would’ve completely seized… I suspect the person I got the car from did a Shawty job on his work. He said he did the main bearings, but the main bearings are marked GM the rod bearings are marked clevite. Should’ve ever trusted this dumbass. but the car ran. Great, sounded great and was too fun to drive. I had a Dino sheet that showed 400 wheel horsepower.