1966 Ford 6000 Commander Diesel Tractor Engine Block C5NN6015G Posted onJune 6, 2025AuthoradminCategoriesfordTagsblock, c5nn6015g, commander, diesel, engine, ford, tractor Up for sale is an engine block. It came off a 1966 Ford 6000 Commander diesel tractor. It has some rust and should be honed /bored to the next size. Bore measures about 3.624. What you see is what you get.