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Click on image for the lowdown. 
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| | | Forums66 Topics128,068 Posts1,055,882 Members48,428 | | 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: Jun 2010 Posts: 20 'Bolter | | 'Bolter Joined: Jun 2010 Posts: 20 | Hello Everyone, I would like to know what years were Eaton HO52/72 rearends used. My plan is to swap out my HO72 with a HO52. In order to start my search, I need to know what years used the "HO52". Was this a 3/4 ton rear? PLEASE HELP!!! Thanks Fella's, Ed Lupardo | | | | | Joined: May 2006 Posts: 8,351 'Bolter | | 'Bolter Joined: May 2006 Posts: 8,351 | 1947-1972. The HO52 was the 3/4 ton version, usually found with a 4.56 ratio, though some do have 5.13 and 4.10 ratios. Ideally, what you would want is the 4.10 version from a '68-'72, which was used in 3/4 tons with the 350 and automatic transmission. Only the 3rd member needs changing if you're wanting to improve the gearing, the axle housings are the same between the 52 and 72. That way, you will keep the larger 1 ton brakes.
Bill Burmeister | | | | | Joined: Jun 2010 Posts: 20 'Bolter | | 'Bolter Joined: Jun 2010 Posts: 20 | Thanks a million Bill for the good information. Now I can start my quest. Gratefull, Ed Lupardo | | |
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