9 bolt
10-08-2014, 09:59 AM
#1
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Car: 92 Camaro Convertable/ 68 Camaro SS
Engine: 305 TBI
Transmission: Auto 700R4
Axle/Gears: 86 TransAM posi rear. 342 gears
9 bolt
How rare are the Borg Warner 9 Bolts?
I bought a 86 TA years ago for the posi rear. I had a shop swap it out for me about 5 years ago.
Last night I went to service the rear and found out my new cover want fit. I was like WTH i dont understand. But i did notice the other night working on my torque arm that the rear had a borg warner cast on it.
So last night I googled BW camaro rear. Well there it was 9 bolt rear. I never knew of these
How rare are these things?
I bought a 86 TA years ago for the posi rear. I had a shop swap it out for me about 5 years ago.
Last night I went to service the rear and found out my new cover want fit. I was like WTH i dont understand. But i did notice the other night working on my torque arm that the rear had a borg warner cast on it.
So last night I googled BW camaro rear. Well there it was 9 bolt rear. I never knew of these
How rare are these things?
10-08-2014, 10:14 AM
#2
Re: 9 bolt
Short answer - they're not rare.
They were put under a lot of IROCS/trans ams/GTAs/Formulas (I may be wrong on some of my firebird assumptions but anyways...) They started putting them in around 86...I think?
They are stronger than the factory 10-bolt but parts are more expensive (as they are kind of a sole-source deal).
They were put under a lot of IROCS/trans ams/GTAs/Formulas (I may be wrong on some of my firebird assumptions but anyways...) They started putting them in around 86...I think?
They are stronger than the factory 10-bolt but parts are more expensive (as they are kind of a sole-source deal).
10-09-2014, 08:53 AM
#3
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Car: Base 91 'bird
Engine: 3.1 v6
Transmission: 4L60
Axle/Gears: 9-bolt 3.27 & PBR
Re: 9 bolt
There are many many threads on the 9 bolts and what it takes to rebuild them but if you're not going to do it yourself it could get very expensive. Usual advice is to get a 10 bolt because parts are cheaper and easier to get. 4th gens also have 10 bolts and sometimes better posi units but the axle is wider so that's another issue.
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