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Is it possible to change a 9 inch

September 25 2009 at 5:18 PM

  (Login jimmystang)
from IP address 124.177.155.233

 
open centre to a LSD or are they two totally different castings?
I don't want to change the whole diff centre, just the guts.
Jim.

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Eric
(no login)
65.25.222.201

Re: Is it possible to change a 9 inch

September 25 2009, 9:51 PM 

If you want the 9 inch to spin both wheels that is possible by putting a mini spool in it. Not sure what LSD stands for.

 
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Ol' Primer
(no login)
72.251.44.166

Re: Is it possible to change a 9 inch

September 25 2009, 10:34 PM 

The castings are different.Mini spool will only work in a single trac unit,but is a pain to drive in the street. LSD is cast and clearanced different to fit in the (posi/lsd)clutch setup.

 
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(Login jimmystang)
124.177.155.233

LSD is a Limited Slip Differential

September 26 2009, 7:13 AM 

So the housings are different.. My only option is to buy another centre.
Whats the recommendation, to buy a new one or second hand? Are they available?
Jim.

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allenman
(Login allenman)
99.31.196.79

Re: LSD is a Limited Slip Differential

September 26 2009, 10:14 AM 

Jim - the posi differential is available either new (from Ford and others, ~$375) or used on Ebay or locally. Used posi's go for anywhere from $160-$220. Clutches will run you $60.

No matter what, you'll need bearings and will have to re-setup the clearances...

 
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(Login TransDummy)
76.1.91.244

Ford 9"s

September 27 2009, 10:38 AM 

I have my old Ford hotrod truck from my 20's still and if my memory is correct the trucks used 31 splined axles and the cars used 28 splined axles. I would research or pull an axle before I baught any parts for your 9"; it is probably a 28 spline axle though.
The ford 9" used to be the choice of hotrodders because it is the toughest differential ford built ( but the carriers have different castings and are important also). I have always gotten consistent double tire burnouts with my truck wich has a modified 460 in it, I have a limited-slip differential also. A spool is mostly used by serious drag-racers and 4x4 drivers because it is just a solid gear holder that locks the axles together, on the street it will chew the heck out of your tires in no time flat.
Hope this helps and nice car BTW.
Dave

 
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(Login jimmystang)
124.185.30.26

Thanks everyone

October 6 2009, 1:00 AM 



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