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Click on image for the lowdown. 
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| | | Forums66 Topics128,066 Posts1,055,875 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!
| | THANKS!
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: Sep 2009 Posts: 5,834 Gearhead, Stovebolt Tech and Parts Tracker, Mod for Swap Meet and GTT | | Gearhead, Stovebolt Tech and Parts Tracker, Mod for Swap Meet and GTT Joined: Sep 2009 Posts: 5,834 | BTW - That earlier GMC ring gear is listed in the 1950 Book as 838177. The GM Partswiki data base doesn't appear to have any books that list GMC part number supersessions or recessions like exist for some of the Chevrolets. Perhaps one of the other GMC gents with more parts books resources can shed some light on the earlier part number and if it was replaced by the generic GMC/Chevy one Bill provided???
~ Dan 1951 Chevy 3 window 3100Follow this story in the DITY Gallery"My Grandpa Carl's Truck and How it Became Mine"1966 Chevelle (Wife's Hot Rod) | 2013 Chevy Silverado (Current daily driver) US Army MSG Retired (1977-1998) | Com Fac Maint Lead Tech Retired (1998-2021)
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