Continental O-470 GPU engine. This engine came from a very nice dry climate, very well kept hangar in California. There was still oil on the dipstick when I pulled the dipstick, but not completely full. All boroscope images came back clean, except one with a little bit of rust inside of it. New update…… cylinder was pulled off and honed, and new rings put on the piston. There is still a little bit of light pitting in the cylinder. The engine turns over freely by hand.There were actually three of these, I am keeping one for my airboat and selling the other two, they were all in identical condition. I staged and wired one engine up and it ran flawlessly. Keep in mind these were all identical engines in identical conditions. Feel free to message me with any questions. Thanks for considering!