Originally Posted by OldSub
14-bolt rears came in exactly two widths. I think 63 inches and 67 inches WMS to WMS. You probably want a 63 inch though its not hard to convert one to the other.

There is lots of good 14-bolt info here.

Thanks for the great link!
Couple things to clarify though:

They came in a couple widths, check about 9/16 of the way down the page (Steve's link above)for explanations.
We're most interested in the dual wheel axle used under a "cab and chassis" truck with 63.5" wheel mounting surface to wheel mounting surface.

This same width could be assembled from a single wheel truck axle with dual wheel hubs installed, however the brake backing plate flanges welded on the axle will be in the wrong place.

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
---All pictures---
"First, get a clear notion of what you desire to accomplish, and then in all probability you will succeed in doing it..." -Henry Maudslay-