The product is a GM 400 small block with a 400 Turbo transmission cylinder wall, specifically designed for a V type engine with 8 cylinders and 16 valves. It has only been driven for less than 10,000 miles and is considered a high-performance part for gasoline fuel type vehicles. The manufacturer part number for this complete assembly is 3951511, making it a reliable option for those looking to upgrade or replace their current engine with a trusted and quality component.