Suspension and Chassis Questions about your suspension? Need chassis advice?

torque arm & wheel hop question

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Old Jun 30, 2010 | 11:51 PM
  #1  
yaj15's Avatar
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From: Northern California - Bay Area
Car: 1988 IROC-Z
Engine: L98 - full intake & exhaust boltons
Transmission: Bowtie 700r4, 2400 rpm stall
Axle/Gears: Borg-Warner 9bolt, 3.45 gears, posi
torque arm & wheel hop question

Which company makes a torque arm will fit a car with a borg warner 9 bolt rear? Most of the companies that I have found only list that their torque arms fit cars with 10bolt rears.

I've got a horrible wheel hop problem and I am hoping that this will fix the problem. I already have hotckis panhard bar, hotckis sub-frame connectors and, hotckis lower control arms installed.
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Old Jul 1, 2010 | 12:08 AM
  #2  
j_camaro_67's Avatar
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From: sask canada
Car: dark hunter red 84 camaro
Engine: 414 stroker
Transmission: th350
Axle/Gears: 3:70
Re: torque arm & wheel hop question

i put a borg warner 9 bolt in to my 84 camaro and used a torque arm for a 10 bolt. http://www.summitracing.com/parts/EDL-5282/ , i did have to cut a small 1"x1" peace out of where it mounts to the diff to clear a lip on the diff. other then that every thing else was the same and bolted rit up.
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Old Jul 1, 2010 | 11:05 AM
  #3  
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From: Everett, WA
Car: 87' IROC
Engine: L98
Transmission: T56
Re: torque arm & wheel hop question

The 9 bolt has the same torque arm mount as the 10 bolt. They should all work.
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Old Jul 1, 2010 | 11:30 AM
  #4  
yaj15's Avatar
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From: Northern California - Bay Area
Car: 1988 IROC-Z
Engine: L98 - full intake & exhaust boltons
Transmission: Bowtie 700r4, 2400 rpm stall
Axle/Gears: Borg-Warner 9bolt, 3.45 gears, posi
Re: torque arm & wheel hop question

Thanks guys thats good to know they will work on both axles. Which companies make the good products?
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Old Jul 1, 2010 | 11:36 AM
  #5  
drperformance's Avatar
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From: Pittsburgh
Car: 1987 firebird
Engine: 1995 lt1 383
Transmission: 4l60e
Axle/Gears: moser 9" with 3.70
Re: torque arm & wheel hop question

I am soory to say that a torque arm is only a small piece to your puzzle and I would not even call it the first piece. IMO I would start with control arm relocation brackets and get you control arms sloped properly to plant the tires into the ground.
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Old Jul 1, 2010 | 11:47 AM
  #6  
yaj15's Avatar
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From: Northern California - Bay Area
Car: 1988 IROC-Z
Engine: L98 - full intake & exhaust boltons
Transmission: Bowtie 700r4, 2400 rpm stall
Axle/Gears: Borg-Warner 9bolt, 3.45 gears, posi
Re: torque arm & wheel hop question

Hopefully that will help fix things. I am going to have new shocks and bushings put on the car soon in addition to a new torque arm.
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Old Jul 10, 2010 | 07:43 PM
  #7  
88fastgta's Avatar
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From: Raleigh, NC
Car: 1988 Flame Red Trans am GTA
Engine: Forged 355 4 Bolt, FIRST TPI
Transmission: 700r4
Axle/Gears: ls1 torsen 3.42 gear
Re: torque arm & wheel hop question

im running a bmr non adjust torque arm on my 9 bolt.. works great... much less nose dive, more solid and better traction and take off....
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Old Jul 10, 2010 | 09:15 PM
  #8  
yaj15's Avatar
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From: Northern California - Bay Area
Car: 1988 IROC-Z
Engine: L98 - full intake & exhaust boltons
Transmission: Bowtie 700r4, 2400 rpm stall
Axle/Gears: Borg-Warner 9bolt, 3.45 gears, posi
Re: torque arm & wheel hop question

Thats good to know. I found out my wheel hop problem was not from the arm but the rear shocks are shot. I am using this as an excuse to rebuild the suspension now. I'm not surprised its worn out I still have the original shocks on the car and a lot of miles.
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Old Jul 10, 2010 | 10:11 PM
  #9  
406z's Avatar
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Posts: 68
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Car: 1984 Z28
Engine: 406
Transmission: 350th
Axle/Gears: 373:1
Re: torque arm & wheel hop question

I personally would get the UMI unit, but

I think you'll find UMI, Sphon, and BMR all make satisfactory products. It's more preference with these brands.The jegs piece is good for a drag car, but if you don't want to suffer adverse handling under heavy braking it may not be the best choice. Also, replace the lcas, add relocation brackets. The torque arm only handles a part of the rearends movement.
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Old Jul 10, 2010 | 10:16 PM
  #10  
yaj15's Avatar
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Joined: Aug 2006
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From: Northern California - Bay Area
Car: 1988 IROC-Z
Engine: L98 - full intake & exhaust boltons
Transmission: Bowtie 700r4, 2400 rpm stall
Axle/Gears: Borg-Warner 9bolt, 3.45 gears, posi
Re: torque arm & wheel hop question

I am looking at that too. I already have a hotckis trackbar and lower control arms and subframe connectors. I am looking at getting poly bushings, hotckis springs, and new shocks.
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Old Jul 11, 2010 | 06:42 AM
  #11  
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From: Lawrence, KS
Car: Met. Silver 85 IROC/Sold
Engine: 350 HO Deluxe (350ci/330hp)
Transmission: T-5 (Non-WC)
Axle/Gears: Limited Slip 3.23's
Re: torque arm & wheel hop question

Originally Posted by 87350IROC
The 9 bolt has the same torque arm mount as the 10 bolt. They should all work.
You'd think so, but the Edelbrock version at least won't fit the 9-bolt without modification. The differences can be seen in the pics at the end of the following link (note the notch that may be similar to the one j_camaro mentions above):

https://www.thirdgen.org/forums/susp...-upgrades.html

JamesC
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