Value of #672 31 spline differential and 3.91 R&P ?

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Old December 30th, 2017 | 10:45 AM
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Value of #672 31 spline differential and 3.91 R&P ?

Curious of market value , #672 31 spline differential with or without oem 3.91 gears
Old December 30th, 2017 | 09:52 PM
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Apologies for the add on, but if anyone needs a housing and axle shafts to go with these let me know. I have a 68 HD 31 spline TL code 31 spline rear wasting away behind the garage that would make a great companion to the gears and posi carrier.
Old December 31st, 2017 | 05:20 AM
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Originally Posted by Fun71
Apologies for the add on, but if anyone needs a housing and axle shafts to go with these let me know. I have a 68 HD 31 spline TL code 31 spline rear wasting away behind the garage that would make a great companion to the gears and posi carrier.
I have one 31 spline axle and the TO housing minus the brackets had been cut off for A body and had leaf perches added.

Last edited by GEARMAN69; December 31st, 2017 at 01:04 PM.
Old December 31st, 2017 | 08:26 AM
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pm sent
Old December 31st, 2017 | 10:23 AM
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You can have the perches rewelded on and it would be fine unless they really butchered it. Fun71 pm sent
Old December 31st, 2017 | 11:04 AM
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[QUOTE=GEARMAN69;1065188]I have one 31 spline axle and the TO housing minus the brackets had been cut off for A body and lead perches added.[/QUOTE

HI


The posi unit and gears in good condition are worth maybe $400 - $700 depending on how nice they are.

A butchered housing is a liability and will cost $$$ to repair or replace missing parts , if it is salvageable at all. It will never be worth what a nice unmolested piece would be.

All the best
Old December 31st, 2017 | 11:45 AM
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Thanks y'all, I need to get home and get stuff clean up. Will decide what to do soon. PM also if you have a 671 unit
Old December 31st, 2017 | 12:01 PM
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Originally Posted by GEARMAN69
Thanks y'all, I need to get home and get stuff clean up. Will decide what to do soon. PM also if you have a 671 unit

I have a complete SD 3.08 12 bolt rear end back plate 2 backing plate
Too bad you are not close by
We could do a trade possibly

With cash coming my way
Old January 7th, 2018 | 06:19 PM
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I do have a 68' heavy duty 12 bolts Olds posi that was rebuilt last summer sitting in my garage. It does have factory 3:91 gears in it w a brand new GM clutch pack, seals, bearings etc. It is the rare 31 spline rear end offered in 1968 and is the 672 carrier. i have two of them and would be willing to part with one. The housing is in nice shape and already painted a semi gloss black- ready to be installed. if interested please send me a PM to discuss.
Thanks.
Old January 8th, 2018 | 03:56 PM
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Gears have some rust but no sign of wear issues, no sharp edge. Factory set. The one 31 spline axle looks fine. I believe the deal was someone busted the other axle when it was being used last in the leaf spring car it was modified for and it got pulled apart but unable to locate a stock axle to repair it.
Old January 8th, 2018 | 04:08 PM
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Pics from today. And now that I see them blown up bigger on PC looks like I got a small corner chip on a pinion tooth. I may keep all this stuff. Will see.
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Last edited by GEARMAN69; January 8th, 2018 at 06:08 PM.
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