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| | | | Joined: Dec 2007 Posts: 4 New Guy | | New Guy Joined: Dec 2007 Posts: 4 | Does anyone know if you can install a posi unit in the original
9.375 eaton housing?, this rear is in a 1959 chevy apache.
Will I need to look for a rearend out of a 71-82 four wheel drive?
Thank you for any help in advance.
It's all gravy now
| | | | | Joined: Feb 2002 Posts: 12,029 Cruising in the Passing Lane | | Cruising in the Passing Lane Joined: Feb 2002 Posts: 12,029 | hey slick, welcome to the garage - you'll need to clarify things a bit to get real answers - an Apache is the light truck designation, 1/2T, 3/4T, 1T, which one? .... won't be any light truck that has an Eaton rear, they were only 2T up [Viking and Spartan] ... and what posi do you have in mind?
Bill | | | | | Joined: Dec 2007 Posts: 4 New Guy | | New Guy Joined: Dec 2007 Posts: 4 | red58,the truck is a 1/2 ton apache fleetside 1959,the rear has ten bolts on rear cover and pinion side is bolted in as well.I was told before on this site my rear was an eaton 9.375 ring gear and could not be made positive traction.Would like to know of options.It is the original rear one legger with 3.90 gearing.Thank you for your response.Any 6 lug reasonable price posi, that will work behind mild 350 is my aim.
Last edited by slick59; 01/09/2008 12:04 AM.
It's all gravy now
| | | | | Joined: Feb 2002 Posts: 12,029 Cruising in the Passing Lane | | Cruising in the Passing Lane Joined: Feb 2002 Posts: 12,029 | never heard anything like that, or the number, and AFAIK the stock 31/3200 rear is corporate, or Dana ... don't think you'll find anything else that will fit the housing, so yes, you'll have to find some later 6 bolt posi truck rear that'll be close to the width
Bill | | | | | Joined: May 2006 Posts: 8,351 'Bolter | | 'Bolter Joined: May 2006 Posts: 8,351 | No aftermarket posi for the corporate housing. You might get lucky and find a 3rd member from a '60-'62, which was the only years thaat posi was offered in that diff, but it's very unlikely due to the rarity (I know, I've been looking for one myself). As far as oe posis in a '59, they used a Spicer 45 (Dana 44) rear end from a GMC. You cauls swap one of those in, it'sll have the right width, and posi units are available for it easily.
Bill Burmeister
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