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Old 09-16-2007, 10:55 PM   #1
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Join Date: Dec 2002
Location: Brooklyn, MI
Posts: 300
Car: 1991 Camaro RS
Engine: 355
Transmission: 700-R4
Axle/Gears: 4.10

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F**d 9 inch "posi" rebuild

I recently install a ford 9 inch rear into my 1991 Camaro which I though was posi. Upon burnout inspection I see it is not. I know the third member it a posi unit so I am under the impression that the clutches are gone. My question is, can I rebuild the unit myself? I see a clutch rebuild kit on ebay for the 9 inch but I'm not sure how to tell if it's what I need. Let me know what type of info is needed to see what can be done.
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Old 09-18-2007, 08:27 AM   #2
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Join Date: Jul 1999
Location: SALEM, NH
Posts: 6,170
Car: '79 Z28
Engine: 400 bored .060 over, forged
Transmission: T5
Axle/Gears: 3.73, 8.5" 10 bolt

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Re: F**d 9 inch "posi" rebuild

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Originally Posted by DNSTA View Post
I recently install a ford 9 inch rear into my 1991 Camaro which I though was posi. Upon burnout inspection I see it is not. I know the third member it a posi unit so I am under the impression that the clutches are gone. My question is, can I rebuild the unit myself? I see a clutch rebuild kit on ebay for the 9 inch but I'm not sure how to tell if it's what I need. Let me know what type of info is needed to see what can be done.
There is nothing easier to rebuilt than a ford 9". All you need is wrenches and some grease.

A mag base would be 'proper', but not needed.


-- Joe
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Old 09-18-2007, 09:45 AM   #3
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Location: Brooklyn, MI
Posts: 300
Car: 1991 Camaro RS
Engine: 355
Transmission: 700-R4
Axle/Gears: 4.10

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Re: F**d 9 inch "posi" rebuild

So there will be no pinion angle, crush bearing, gear wear pattern to setup if I rebuild the posi clutches?
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Old 09-18-2007, 10:35 AM   #4
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Join Date: Jul 1999
Location: SALEM, NH
Posts: 6,170
Car: '79 Z28
Engine: 400 bored .060 over, forged
Transmission: T5
Axle/Gears: 3.73, 8.5" 10 bolt

Classifieds Rating: (5)
Re: F**d 9 inch "posi" rebuild

Quote:
Originally Posted by DNSTA View Post
So there will be no pinion angle, crush bearing, gear wear pattern to setup if I rebuild the posi clutches?
Pinion angle? no.

Backlash is adjustable. Pinion depth is easy. You'll basicaly have it apart once or twice, three times tops until you get a good pattern. and it's all done on a work bench. then you pop the pumpkin back in the housing.

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Old 09-18-2007, 12:11 PM   #5
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Location: Brooklyn, MI
Posts: 300
Car: 1991 Camaro RS
Engine: 355
Transmission: 700-R4
Axle/Gears: 4.10

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Re: F**d 9 inch "posi" rebuild

Sounds good. So I assume the ebay clutch kit should be what I need or were there different types of limited slip used in these rears?
----------
Oh, one more thing. If all I am doing is replacing the clutches, will anything really need to be reset? I haven't got into it yet so I realize these questions may answer themselves but I appreciate the advice.

Last edited by DNSTA; 09-18-2007 at 12:14 PM. Reason: Automerged Doublepost
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Old 09-19-2007, 02:23 PM   #6
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Car: 1991 Camaro RS
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Re: F**d 9 inch "posi" rebuild

ttt
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Old 09-19-2007, 02:23 PM
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