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Click on image for the lowdown. 
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| | | Forums66 Topics128,110 Posts1,056,251 Members48,437 | | Most Online14,466
Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
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For helping keep this great
old truck web site
on the Internet for over 30 years! and not clogged down
with Ads!  Again, thanks!
| | | | Joined: Nov 2000 Posts: 1,969 'Bolter | | 'Bolter Joined: Nov 2000 Posts: 1,969 | I know they were made and used from 48 – 72 (and maybe other years) in 3/4 and 1 ton trucks. Really not too much in the 48-51 Shop Manual to explain the differences. In fact, the Chevy manuals don’t identify them as HO-anything or as Eaton. And do those designations apply to the entire axle assembly or just the differential?
Thanks
Professional Novice
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