In my 1937 Truck Sales Handbook, there is a statement regarding the 1 1/2 ton driveline that may apply here. This model truck has a hybrid driveline; the front is open and rear of the carrier bearing it is a torque tube. So it is not the same as a full torque tube, but they comment the "all braking and torque strains are borne by the torque tube...".

This makes me think that there may be considerable strain, especially upon braking, on the torque tube and unless the splice is robust, you may have failure there.

Perhaps the engineer types might have some thing to add.

Kent

1937 Chevy 1/2 ton
1942 Chevy 1/2 ton
1947 Diamond T Model 509
1951 Chevy 1/2 ton
1950 Chevy COE Model 5700 ~ "Barney" ~ And more pix