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Click on image for the lowdown. 
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| | | Forums66 Topics128,050 Posts1,055,667 Members48,426 | | 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: Jan 2017 Posts: 308 'Bolter | | 'Bolter Joined: Jan 2017 Posts: 308 | I have a 51 3100 with 342-B15 rear end gears. Where do I find out when GM started using them, and in what trucks? Every time I search I am offered spare parts. | | |
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