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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
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| | | | Joined: May 2006 Posts: 8,351 'Bolter | | 'Bolter Joined: May 2006 Posts: 8,351 | Am I suppose to guess you are talking about a 59 1/2 ton?
If yes, you are limited to 3.90:1, or 3.38:1. As far as I know there is no Posi options available for the HO33 rear. The only Posi unit for that rear was the Eaton Positraction, only manufactured from '60-'62/early '63. Nothing in the aftermarket exept for a Miller or Lincoln Locker  .
Bill Burmeister
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