This engine was removed in good running condition from a truck converted to natural gas. We will test run it again prior to shipping. It starts easy, has good oil pressure and no apparent leaks. The bell housing is a transmission adapter that takes any chevy transmission with 1 1/8", 10 spline shaft. The engine produces 220 ft/lb torque @ 2000 rpm. This is the engine that was originally developed by Onan and is extremely well built.