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Click on image for the lowdown. 
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| | | Forums66 Topics128,180 Posts1,057,150 Members48,464 | | 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: Jul 2010 Posts: 4 New Guy | | New Guy Joined: Jul 2010 Posts: 4 | If it is an Eaton rear end, I don't believe you can get anything below 4.11 My 72 K20 suburban has that combination.
Maurice
72 Suburban K20 350/T350/HO52
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