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| | | | Joined: Feb 2007 Posts: 56 'Bolter | | 'Bolter Joined: Feb 2007 Posts: 56 | Hi all... Grant here. Bad news today... found out the 12 bolt 3:73 posi that I was planning on overhauling for my 59 Apache 1/2 ton is trashed beyond practical use. So now I am considering options. What is available to put into the original 3rd member rear end as far as ratios with a posi unit? I am mostly interested in 3:73 or 3:42. Thanks.
Last edited by Grant Dupee'; 04/12/2011 10:32 PM.
| | | | | Joined: Dec 2004 Posts: 1,897 Shop Shark | | Shop Shark Joined: Dec 2004 Posts: 1,897 | 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.
| | | | | Joined: Jan 2011 Posts: 60 Wrench Fetcher | | Wrench Fetcher Joined: Jan 2011 Posts: 60 | I know I have as S104wd rearend,that has 3:73 posi,and some of them have 3:42posi.I would think it is not an original 59rearend?My guess? | | | | | 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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