My buddy and I have what we believe to be a TH475 it was in a motor home behind a gm 6.2 diesel with a 14 bolt full float rear end. So we think it is a 475 rather than a 400 but the only way we have found to tell the difference is to break it open and look at the gear tooth pattern. Only problem is we don't know how to break it open. And all we can find on the web is how to reassemble it. So does anyone know how to open it up?
