Aaron and Steve worked on this all last week. The owner thought the block was cracked and brought it to Aaron to change the engine. It is a 454 Chevy. It had moisture in the crankcase and was the consistency of a milkshake. Aaron wanted to be sure the block was cracked, so he drained the oil (sludge) and put some diesel fuel in to clean it out. After several more oil changes and a few more issues that needed fixed (broken impeller on the water pump, bad circuit breaker), it is running great. The guys even took it out for a spin on the lake just to be sure.
Here's the bad boy: