The 1954 truck rearend is 3.90:1 on the 3100 trucks (1/2 ton).

The '54 Sedan Delivery had a stock 3.7:1 rearend and this vehicle with a Powerglide transmission had a 3.55:1 rearend. If the Powerglide transmission is longer than the manual transmission, then the length of the torque-tube is shorter (as in the case with the HydraMatic transmission in the 3100 truck). My guess is that the Sedan Delivery drive train matches the automobile's drivetrain but I do not know how well these matched up in length to the trucks torque-tube.

Maybe someone else will have better infortmation.

Tim