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Bw 9"

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Old Mar 3, 2011 | 12:00 PM
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Default Bw 9"
I apparently have one of these in my car, and need to know more about it. I always hear about the 10" but nothing about these..
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Old Mar 3, 2011 | 05:32 PM
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Borg warner? 9 BOLT? yeah got to thirdgen.org or 9bolt.com its better than the 10bolt but nothing like a dana 44 12 bolt, 9" or dana 60
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Old Mar 4, 2011 | 12:08 AM
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it is better than the 7.5 10, but there are like 2 gear ratios avail for it and that is it...
i believe 3.9 and 3.4
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Old Mar 4, 2011 | 01:20 PM
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Originally Posted by 89 formula350
Borg warner? 9 BOLT? yeah got to thirdgen.org or 9bolt.com its better than the 10bolt but nothing like a dana 44 12 bolt, 9" or dana 60
sorry. i did mean 9 bolt.. just getting wasn't thinking for a minute.. i'll check those sites.

Originally Posted by Supershafts
it is better than the 7.5 10, but there are like 2 gear ratios avail for it and that is it...
i believe 3.9 and 3.4
Are those any good though? are they worth it?
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Old Mar 4, 2011 | 08:27 PM
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They are stronger than a 10 bolt but there is very little in the way of after market support for them as they are a pretty rare option.
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Old Mar 4, 2011 | 08:39 PM
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Replacing wheel bearings and pinion bearings should be the same as a 10 bolt though, right?
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Old Mar 4, 2011 | 09:05 PM
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go check out those sites

the gears idk what the other guy is on but they have many ratios 2.77, 3.08,3.27, 3.45, 3.70 all came stock on the f-body.. and also 4.11 , 3.90 just about the same ranges in gears as a 7.5
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Old Mar 4, 2011 | 10:22 PM
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good rear end , about as strong as a 8.5 gm set up . gears are plentiful for em , center section is rough to rebuild as the last i tried ya had to replace all or nuttin but that may have changed in the last few yrs . i had one in my 87 formula and it took many low 11 sec passes and 1.5x 60 ft,s
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Old Mar 6, 2011 | 10:31 AM
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is there any 100% way of confirming this is the rear end, and where would be a good place to look for a diff cover for this?
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Old Mar 6, 2011 | 08:43 PM
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look for 9 bolts on the cover , if there is 9 ya have the "aussie "rearend . if ya have 10 ya dont .
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Old Mar 6, 2011 | 08:48 PM
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How ironically easy.. I will see, thanks.
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Old Mar 7, 2011 | 05:53 PM
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Originally Posted by sempire
is there any 100% way of confirming this is the rear end, and where would be a good place to look for a diff cover for this?
T A performance is the only place I know of that followed through and offered a cover to the public

http://www.taperformance.com/products.asp?cat=48

Last edited by 89 formula350; Mar 7, 2011 at 06:00 PM.
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