I thought that was what you were saying but there is no difference in length between a 3 and 4 speed truck.
The only torque tube with a different length from 1948-54 is one with a automatic transmission.
Shows my ignorance of torque tube trucks. Is it fair to answer the original poster's question by saying there is no difference between the torque tube bells between a 3 speed and a 4 speed? I thought the torque tube bells had different lengths or bolt patterns. Again I do not personally have a lot of experience with the torque tubes, or trasmissions that mate to the torque tubes.
