48 and later 3/4, 1, and 1.5 ton have the same axle beam which is noticeably larger than a 1/2 ton. 1/2 ton spindles won't fit on the larger truck I-beams.

Some people swap whole 1/2 ton axles under the 3/4 or 1 ton but then you've got a 1/2 ton truck...

The idea of using 1 ton stuff and adapting large disc brakes is to have an axle suitable for holding up and stopping a working 1 ton truck.

Grigg


•1951 GMC 250 in the Project Journals
•1948 Chevrolet 6400 - Detroit Diesel 4-53T - Roadranger 10 speed overdrive - 4 wheel disc brakes
•1952 Chevrolet 3800 pickup
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"First, get a clear notion of what you desire to accomplish, and then in all probability you will succeed in doing it..." -Henry Maudslay-