Thanks Tim, that also looks like they're the same but less detail, less conclusive, than the parts book.

I think I have presented enough pertinent information in those parts book pages/pictures linked already? But I'm not fully confident I'm reading it right.

Some day at a Stovebolt gathering we should have a classroom lesson on how to use and understand the old GM parts books. I'd sign up for that real quick!

Larry, what I don't have on hand is a single wheel axle to compare side by side with my dual.

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-