I am starting to restore my 640 with a 471 and 5 and 3 trans. I am going to start by making sure the motor is okay and then I am going to replace the 5 speed with a 610 road ranger I have. Also does anyone know if they made a turbo 471? I will be in need of a few small parts like a factory air gauge or have mine restored. I will post pics when I get them.
Thanks
Brad