Borg Warner rear questions
#1
Supreme Member
Thread Starter
Join Date: Dec 2001
Location: Tucson - MdFormula350 = Post uberWhore
Posts: 2,179
Likes: 0
Received 0 Likes
on
0 Posts
Car: Sexy
Engine: Stock
Transmission: Slipping
Borg Warner rear questions
According to the Tech Data on the main page to this site, GM stopped putting Borg Warner rears in our cars in 1990. As I was jacking up the car to put in the torque arm, I noticed Borg Warner stamped on the bottom of the differential casing, and a tag saying that it's part # 10142076 and a 3.27 ratio.
Did any 90 Irocs leave the factory with this rear in it, or did someone probably replace the old unit with this one? I have G92 on the RPO sticker, so I know I'm supposed to at least have a 3.23 posi.
Now.. is this rear supposed to be stronger/better than the rear I'm supposed to have? If I start ordering gears/brakes/etc... are the parts going to be different?
Thanks.
Did any 90 Irocs leave the factory with this rear in it, or did someone probably replace the old unit with this one? I have G92 on the RPO sticker, so I know I'm supposed to at least have a 3.23 posi.
Now.. is this rear supposed to be stronger/better than the rear I'm supposed to have? If I start ordering gears/brakes/etc... are the parts going to be different?
Thanks.
#2
Senior Member
Join Date: Jul 1999
Location: Mpls, MN USA
Posts: 931
Likes: 0
Received 0 Likes
on
0 Posts
Car: 88 Camaro
Engine: 427 BBC
Transmission: T400
Yes, the 9 bolt is much stronger than the 10 bolt and yes the parts are different. The 9 bolt parts are more expensive. For a complete list of what is available, check my page at www.9bolt.com
Miles
9bolt.com
Miles
9bolt.com
#3
Senior Member
Join Date: Jul 2000
Location: Tx
Posts: 992
Likes: 0
Received 0 Likes
on
0 Posts
Car: 92 Z, 91 Formula, 04 CTS, 01 Tahoe
Engine: 355 forged 4 bolt, SuperRam, 58mm t
Transmission: T5, looking for t-56
Re: Borg Warner rear questions
Originally posted by Synapsis
Did any 90 Irocs leave the factory with this rear in it.
Did any 90 Irocs leave the factory with this rear in it.
#4
Supreme Member
Join Date: Sep 2001
Location: Decatur, Illinois
Posts: 2,906
Likes: 0
Received 0 Likes
on
0 Posts
I wonder if they were using up left over inventory, because I have always heard that they stoped making them in 89. Maybe they did continue to 90, I dont know.
Ben
Ben
#5
Supreme Member
Thread Starter
Join Date: Dec 2001
Location: Tucson - MdFormula350 = Post uberWhore
Posts: 2,179
Likes: 0
Received 0 Likes
on
0 Posts
Car: Sexy
Engine: Stock
Transmission: Slipping
That's what I was thinking. Is there a way to tell at what time of year the car was manufactured? VW Bugs have it on a tag in the trunk, wonder if GM does the same somewhere.
#6
Don't forget warranty replacement. If someone's rear went out the dealer might have replaced it with a BW.
FWIW, I bought my 90 new and my rear end was replaced at 30k miles with a BW unit. I honestly don't know if it originally had a 10 bolt or 9 bolt. Too many years ago.
FWIW, I bought my 90 new and my rear end was replaced at 30k miles with a BW unit. I honestly don't know if it originally had a 10 bolt or 9 bolt. Too many years ago.
Trending Topics
#8
Moderator/TGO Supporter
Join Date: Jul 1999
Location: Huntington Beach, CA
Posts: 1,710
Likes: 0
Received 1 Like
on
1 Post
Car: 87 IROC 92 Z-28 91 Ragtop
Engine: 5.7
Transmission: 700-r4
How can I tell which series carrier is in the 9-bolt 3.27 BW Posi rear in my '87 IROC?
If it's a series I or II, is it upgradeable to a series III?
What's the diference with the series III?
Thanks for any help.
If it's a series I or II, is it upgradeable to a series III?
What's the diference with the series III?
Thanks for any help.
#9
Moderator
iTrader: (5)
Synapsis,
About the Edelbrock torque arm and the need to modify it: As you may recall, I ordered one as well, so I was concerned about the fit after your experience. I phoned Edelbrock and was told that the arm would fit all 84-00 (?) cars, 'except' those with B/W rear ends.
JamesC
About the Edelbrock torque arm and the need to modify it: As you may recall, I ordered one as well, so I was concerned about the fit after your experience. I phoned Edelbrock and was told that the arm would fit all 84-00 (?) cars, 'except' those with B/W rear ends.
JamesC
#10
Senior Member
Join Date: Jul 2000
Location: Tx
Posts: 992
Likes: 0
Received 0 Likes
on
0 Posts
Car: 92 Z, 91 Formula, 04 CTS, 01 Tahoe
Engine: 355 forged 4 bolt, SuperRam, 58mm t
Transmission: T5, looking for t-56
Originally posted by JamesC
Synapsis,
About the Edelbrock torque arm and the need to modify it: As you may recall, I ordered one as well, so I was concerned about the fit after your experience. I phoned Edelbrock and was told that the arm would fit all 84-00 (?) cars, 'except' those with B/W rear ends.
JamesC
Synapsis,
About the Edelbrock torque arm and the need to modify it: As you may recall, I ordered one as well, so I was concerned about the fit after your experience. I phoned Edelbrock and was told that the arm would fit all 84-00 (?) cars, 'except' those with B/W rear ends.
JamesC
#12
Supreme Member
Thread Starter
Join Date: Dec 2001
Location: Tucson - MdFormula350 = Post uberWhore
Posts: 2,179
Likes: 0
Received 0 Likes
on
0 Posts
Car: Sexy
Engine: Stock
Transmission: Slipping
*Now* I find this out.
I've cut a large portion of the "E" plate out, leaving around 1/2 inch of it at the welds for strength. I'm going to have someone weld a piece of strong tubing to the end that I cut, probably not necessary since the differential housing itself provides a lot of strength at that point.
Thanks for the info JamesC.
I've cut a large portion of the "E" plate out, leaving around 1/2 inch of it at the welds for strength. I'm going to have someone weld a piece of strong tubing to the end that I cut, probably not necessary since the differential housing itself provides a lot of strength at that point.
Thanks for the info JamesC.
#13
Junior Member
Join Date: Dec 2001
Location: Louisville, KY
Posts: 85
Likes: 0
Received 0 Likes
on
0 Posts
Originally posted by Synapsis
Is there a way to tell at what time of year the car was manufactured?
Is there a way to tell at what time of year the car was manufactured?
Eric
#14
Senior Member
Join Date: Jul 1999
Location: Mpls, MN USA
Posts: 931
Likes: 0
Received 0 Likes
on
0 Posts
Car: 88 Camaro
Engine: 427 BBC
Transmission: T400
How can I tell which series carrier is in the 9-bolt 3.27 BW Posi rear in my '87 IROC?
If it's a series I or II, is it upgradeable to a series III?
What's the diference with the series III?
If it's a series I or II, is it upgradeable to a series III?
What's the diference with the series III?
Miles
www.9bolt.com
Thread
Thread Starter
Forum
Replies
Last Post
theshackle
Tech / General Engine
4
09-17-2020 08:26 AM
10142076, 327, 776, axle, borg, borgwarner, differential, end, gm, number, part, rear, slipping, transmission, warner