BW 9-Bolt Rearends (X2) parts?

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Old Mar 13, 2026 | 11:01 AM
  #1  
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From: Oak Harbor, WA
Car: 1990 IROC-Z
Engine: 383 HSR
Transmission: 700R4
Axle/Gears: 3.70
BW 9-Bolt Rearends (X2) parts?

I have two BW 9-bolt rearends in parts/pieces I was going to rebuild. Went another route and put in 4th gen rears so these are extras now. Three sets of gears: 2.77, 3.27, and 3.45, two carriers (3-series and 2-series), all axles and brakes. I believe both sets of brakes are the early style. Also have a NIB TA cover available.

Let me know if there's any interest and I can post up some pics and work out prices.
Thanks.
~Tim
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Old Mar 13, 2026 | 11:31 AM
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From: Chiefland, FL
Car: 1988 Trans am GTA
Engine: L98 350 TPI
Transmission: 700r4
Axle/Gears: Factory 9 bolt w/disc brakes
Re: BW 9-Bolt Rearends (X2) parts?

Originally Posted by Magman
I have two BW 9-bolt rearends in parts/pieces I was going to rebuild. Went another route and put in 4th gen rears so these are extras now. Three sets of gears: 2.77, 3.27, and 3.45, two carriers (3-series and 2-series), all axles and brakes. I believe both sets of brakes are the early style. Also have a NIB TA cover available.

Let me know if there's any interest and I can post up some pics and work out prices.
Thanks.
~Tim
Can i direct swap the 345 into my car that has 327 gears? I might be interested in that.
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Old Mar 13, 2026 | 02:44 PM
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From: Oak Harbor, WA
Car: 1990 IROC-Z
Engine: 383 HSR
Transmission: 700R4
Axle/Gears: 3.70
Re: BW 9-Bolt Rearends (X2) parts?

You can. Provided you're familiar with setting the gears up. They're both (3.27 and 3.45) made for the 3-series carriers.
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Old Mar 14, 2026 | 08:48 PM
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From: Malvern, Arkansas
Car: 90 IROC 2-92 Zs blk vert & prpl
Engine: stealth ram brodix track 1 ful port
Transmission: 700r4 4l80e
Axle/Gears: iroc 375 lokr 92 Z 277 pos vert 327
Re: BW 9-Bolt Rearends (X2) parts?

If you have a good 3 series posi I’ve got a 3:27 geared 89 model that could use a freshened posi so let me know about that. What do you know about newer style gear posi on 9 bolt.com is it worth the money there asking?
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Old Mar 14, 2026 | 08:48 PM
  #5  
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From: Malvern, Arkansas
Car: 90 IROC 2-92 Zs blk vert & prpl
Engine: stealth ram brodix track 1 ful port
Transmission: 700r4 4l80e
Axle/Gears: iroc 375 lokr 92 Z 277 pos vert 327
Re: BW 9-Bolt Rearends (X2) parts?

If you have a good 3 series posi I’ve got a 3:27 geared 89 model that could use a freshened posi so let me know about that. What do you know about newer style gear posi on 9 bolt.com is it worth the money there asking?
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Old Mar 16, 2026 | 09:08 AM
  #6  
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From: Chiefland, FL
Car: 1988 Trans am GTA
Engine: L98 350 TPI
Transmission: 700r4
Axle/Gears: Factory 9 bolt w/disc brakes
Re: BW 9-Bolt Rearends (X2) parts?

Originally Posted by Magman
You can. Provided you're familiar with setting the gears up. They're both (3.27 and 3.45) made for the 3-series carriers.
I am not familiar with the process... I am converting my 350 auto car to a 350 manual car, so I am just thinking that the gearing will help alot with driveability, but it might be out of my level of skill to do the swap.
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Old Mar 16, 2026 | 02:32 PM
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Magman's Avatar
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From: Oak Harbor, WA
Car: 1990 IROC-Z
Engine: 383 HSR
Transmission: 700R4
Axle/Gears: 3.70
Re: BW 9-Bolt Rearends (X2) parts?

Abray1: The three series posi I have is used, never re-worked. I'll break it out tonight and get you some pics so you can decide.

Last edited by Magman; Mar 16, 2026 at 02:33 PM. Reason: addressing
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Old Mar 16, 2026 | 09:02 PM
  #8  
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From: Malvern, Arkansas
Car: 90 IROC 2-92 Zs blk vert & prpl
Engine: stealth ram brodix track 1 ful port
Transmission: 700r4 4l80e
Axle/Gears: iroc 375 lokr 92 Z 277 pos vert 327
Re: BW 9-Bolt Rearends (X2) parts?

Ok need to know if new cones will work or if needs machining to take new cones
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Old Mar 18, 2026 | 02:35 PM
  #9  
Magman's Avatar
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From: Oak Harbor, WA
Car: 1990 IROC-Z
Engine: 383 HSR
Transmission: 700R4
Axle/Gears: 3.70
Re: BW 9-Bolt Rearends (X2) parts?

I'm going to have to pause this thread until the 30th of March. I need to depart for a family issue. I'll be back on here after the 30th to move parts if interested.
~Tim
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Old Mar 18, 2026 | 05:03 PM
  #10  
abray1's Avatar
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Joined: May 2005
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From: Malvern, Arkansas
Car: 90 IROC 2-92 Zs blk vert & prpl
Engine: stealth ram brodix track 1 ful port
Transmission: 700r4 4l80e
Axle/Gears: iroc 375 lokr 92 Z 277 pos vert 327
Re: BW 9-Bolt Rearends (X2) parts?

Hope all goes well interested in the pics of the 3 series carrier and gears
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Old Apr 29, 2026 | 02:20 PM
  #11  
Magman's Avatar
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From: Oak Harbor, WA
Car: 1990 IROC-Z
Engine: 383 HSR
Transmission: 700R4
Axle/Gears: 3.70
Re: BW 9-Bolt Rearends (X2) parts?

All right guys. I'm back, my apologies for the extended abscence but life got in the way. I plan to post up pictures this evening when I get off of work. LMK if there is any interest once I upload the photo's.
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Old Apr 29, 2026 | 10:01 PM
  #12  
Magman's Avatar
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From: Oak Harbor, WA
Car: 1990 IROC-Z
Engine: 383 HSR
Transmission: 700R4
Axle/Gears: 3.70
Re: BW 9-Bolt Rearends (X2) parts?

All right fellas, here's the pics of what I have. The housings are gone, everything else is available. Everything is used except the TA cover. I recommended news shims and bearings for everything pictured. Trying to move these along and not throw them away. Everything is OBO and buyer covers shipping. Reply or PM me if you're interested in any of these parts.

3-series carrier - NOT AVAILABLE
2-series carrier (X2) - $100
TA Cover - $150
Axles - $40 each
Gear sets - 2,77 $100, 2nd set 2.77 $100, 3.27 $125, 3,45 $150.
Yokes - $25 each I have two.



















Last edited by Magman; May 2, 2026 at 08:13 PM. Reason: 3-series carrier not available
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Old Apr 30, 2026 | 12:18 PM
  #13  
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From: Chiefland, FL
Car: 1988 Trans am GTA
Engine: L98 350 TPI
Transmission: 700r4
Axle/Gears: Factory 9 bolt w/disc brakes
Re: BW 9-Bolt Rearends (X2) parts?

Originally Posted by Magman
All right fellas, here's the pics of what I have. The housings are gone, everything else is available. Everything is used except the TA cover. I recommended news shims and bearings for everything pictured. Trying to move these along and not throw them away. Everything is OBO and buyer covers shipping. Reply or PM me if you're interested in any of these parts.

3-series carrier - $125
2-series carrier - $100
TA Cover - $150
Axles - $40 each
Gear sets - 2,77 $100, 2nd set 2.77 $100, 3.27 $125, 3,45 $150.
Yokes - $25 each I have two.














PM Sent on the 3 series carrier, TA Cover and the 3:42 gear set.
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