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Click on image for the lowdown. 
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| | | Forums66 Topics128,125 Posts1,056,338 Members48,440 | | 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 2009 Posts: 119 Wrench Fetcher | | Wrench Fetcher Joined: Nov 2009 Posts: 119 | Just got a good look under my bed(I took it off). My rear diff has an "MA6 30" stamped on it. It's a ten bolt in a circular pattern. Can anyone tell me what all of this means? Can you pinpoint what type of gears I have inside?
Thanks for your help!
Thom Masterson
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