thanks, I was reading that Novak page earlier, they mentioned the following that had me wondering:

The SM420 most commonly has a large, 10-spline output mainshaft for both 2wd and 4wd versions. Some fairly rare 2wd models (likely the 2-ton versions) featured a 35-spline and a male threaded output. These versions also have a rare, 22-spline first gear journal, instead of the usual 11-spline "skip-tooth" journal.

that is why I was wondering about bolting on the yoke and brake drum.


Mike
1955 Chevy 6400 ex-flatbed (no bed now!) sold September 2023
In the Stovebolt Gallery
1958 Chevy 6400 flatbed W/dump
In the Stovebolt Gallery
1959 Chevy Suburban Owned for almost 20 years, Daily Driver -- sold May 2016
In the Stovebolt Gallery

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