9 Bolt Borg Warner Torsen upgrade completed! Thanks keykey!
Member
Joined: Jan 2003
Posts: 437
Likes: 21
From: Long Island N.Y
Car: 1988 Pontiac GTA
Engine: 5.7 l98
Transmission: 700r4
Axle/Gears: BW 9bolt with torsen carrier
Re: 9 Bolt Borg Warner Torsen upgrade completed! Thanks keykey!
$500 AUD is $343 USD.
Even at $500 USD it would be pretty much par for the course. Have you priced out a TrueTrac? A Detroit TrueTrac for a 10 bolt is $532 from JEGS.
I paid $530 USD shipped from Australia. That was in 2017. So I imagine the prices may have gone up due to US tariffs with China. It's been over 3 years since I did this install. Which BTW I daily drive my Trans Am, which now has about 400 crank HP and the VL Holden Torsen is working great still...... I'm about to do a brake kit from Big Brake Upgrade.com and put some C5 rear calipers w/parking brake on my 9 bolt.....
Compared to swapping the axle with something else like a 4th gen with a Zexel Torsen..... much cheaper if you already have the 9 bolt.
GD
Even at $500 USD it would be pretty much par for the course. Have you priced out a TrueTrac? A Detroit TrueTrac for a 10 bolt is $532 from JEGS.
I paid $530 USD shipped from Australia. That was in 2017. So I imagine the prices may have gone up due to US tariffs with China. It's been over 3 years since I did this install. Which BTW I daily drive my Trans Am, which now has about 400 crank HP and the VL Holden Torsen is working great still...... I'm about to do a brake kit from Big Brake Upgrade.com and put some C5 rear calipers w/parking brake on my 9 bolt.....
Compared to swapping the axle with something else like a 4th gen with a Zexel Torsen..... much cheaper if you already have the 9 bolt.
GD
Member
Joined: Jan 2003
Posts: 437
Likes: 21
From: Long Island N.Y
Car: 1988 Pontiac GTA
Engine: 5.7 l98
Transmission: 700r4
Axle/Gears: BW 9bolt with torsen carrier
Re: 9 Bolt Borg Warner Torsen upgrade completed! Thanks keykey!
Member
Joined: Sep 2013
Posts: 122
Likes: 12
From: Sweden
Car: 1988 Trans Am GTA
Engine: 350 TPI (L98)
Transmission: TH700R4
Axle/Gears: 3.27 9-bolt w/ Torsen LSD
Re: 9 Bolt Borg Warner Torsen upgrade completed! Thanks keykey!
https://www.thirdgen.org/forums/tran...installed.html
Member
Joined: Jan 2003
Posts: 437
Likes: 21
From: Long Island N.Y
Car: 1988 Pontiac GTA
Engine: 5.7 l98
Transmission: 700r4
Axle/Gears: BW 9bolt with torsen carrier
Re: 9 Bolt Borg Warner Torsen upgrade completed! Thanks keykey!
Read my original post in the original thread, 6th picture from the bottom of the first post you have a picture and an explanation:
https://www.thirdgen.org/forums/tran...installed.html
https://www.thirdgen.org/forums/tran...installed.html
Member
Joined: Jan 2003
Posts: 437
Likes: 21
From: Long Island N.Y
Car: 1988 Pontiac GTA
Engine: 5.7 l98
Transmission: 700r4
Axle/Gears: BW 9bolt with torsen carrier
Re: 9 Bolt Borg Warner Torsen upgrade completed! Thanks keykey!
Read my original post in the original thread, 6th picture from the bottom of the first post you have a picture and an explanation:
https://www.thirdgen.org/forums/tran...installed.html
https://www.thirdgen.org/forums/tran...installed.html
Member
Joined: Jan 2003
Posts: 437
Likes: 21
From: Long Island N.Y
Car: 1988 Pontiac GTA
Engine: 5.7 l98
Transmission: 700r4
Axle/Gears: BW 9bolt with torsen carrier
Re: 9 Bolt Borg Warner Torsen upgrade completed! Thanks keykey!
Member
Joined: Jan 2003
Posts: 437
Likes: 21
From: Long Island N.Y
Car: 1988 Pontiac GTA
Engine: 5.7 l98
Transmission: 700r4
Axle/Gears: BW 9bolt with torsen carrier
Re: 9 Bolt Borg Warner Torsen upgrade completed! Thanks keykey!
Ra-Tech is who I got all my parts from. There are different sizes for pinion bearings and they have a better crush sleeve design available as well. I would consider the TA rear girdle cover to be essential for strength as well as fluid servicing also. The stock rubber plug for fill only is garbage. TA cover has drain, fill, and check plugs. Make sure to use thread sealant on the pre-load studs or they will leak. I used Loctite 545.
GD
GD
Member
Joined: May 2006
Posts: 378
Likes: 8
From: Columbus, OH
Car: '87 IROC-Z
Engine: TPI 5.7
Transmission: T-56
Re: 9 Bolt Borg Warner Torsen upgrade completed! Thanks keykey!
Got mine going in now! The shop has gotten the old diff out and inspected the R&P (good) but now it's the weekend!
Member
Joined: May 2006
Posts: 378
Likes: 8
From: Columbus, OH
Car: '87 IROC-Z
Engine: TPI 5.7
Transmission: T-56
Re: 9 Bolt Borg Warner Torsen upgrade completed! Thanks keykey!
What are your all's experiences with this diff in the rain? My DD is in the shop so now I'm driving my IROC in Ohio during February. I've been really impressed with it around town as compared to before where it was a peel-out festival on wet pavement.
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