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Click on image for the lowdown. 
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| | | Forums66 Topics128,154 Posts1,056,834 Members48,456 | | 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: May 2006 Posts: 8,351 'Bolter | | 'Bolter Joined: May 2006 Posts: 8,351 | The parts do not interchange. The 3.92 ratio would indicate you have the rare Positraction option, which uses the Spicer 45 axle instead of the HO33. Parts are very hard to get for those. The 3.38 gearset that's on the market is only for the HO33.
Bill Burmeister
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