What transmission fits a 351W?
What transmission fits a 351W? A C-4 is a good reliable trans and will fit behind a 351W no problem. An AOD is another good option if you want taller gears and manners for highway cruising... How do I know what transmission I have in my f250? Open the driver's side door and find the white card on the side of the door that is filled with small black lettering. This card contains specific details about the year the car was made, its transmission, engine specifications and other details. Underneath or beside the “TR” symbol will be a number code....