Need new seal on speedo cable and O-ring
Just fixed neighbors '52 Chev truck with T400 trans leak. The speedo cable had
a "seal" and there was an O-ring on the housing that was removed to get to
speedo gear. Chevrolet dealer still had these parts in stock!
The speedo gear actually had a chunk broken out where the cable entered and
was alllowing fluid to bypass there as well. Red speedo gear was fun to find...