Today I picked up a core LB7 from a guy that had bought it from someone else as a running engine in the truck before being pulled and then sold it , but the second buyer found metal in the intake runners and got the engine replaced from the guy who I bought it from. I had been hoping for a cracked piston and a salvageable block, but I got the head off and found this. It had dropped two valves and bent all the exhaust push rods and eaten all 4 exhaust valve bridges, eaten and entire number 5 piston. I just don't know how someone can say it was running when pulled.