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

So what does Spohn's TA do differently?

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Old Oct 27, 2001 | 03:25 AM
  #1  
Jer82Z28's Avatar
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From: Alberta, Canada
Car: 1987 IROC
Engine: Vortec 350 TPI
Transmission: 7004r
So what does Spohn's TA do differently?

I was looking at his site and he wants $350 for his adjustable Torque Arm.
what all does it do to justify it's price?
I hear it helps with wheel hop and traction, but how? can anyone explain how it works?

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Old Oct 27, 2001 | 08:16 AM
  #2  
ede's Avatar
ede
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From: Jackson County
it's adjustable and relocates the forward mounting point to the floor pan

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Old Oct 27, 2001 | 12:16 PM
  #3  
RB83L69's Avatar
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From: Loveland, OH, US
Car: 4
Engine: 6
Transmission: 5
Like ede said, it takes the front mount point off the side of the trans, and relocates it to the crossmember. Good-bye to the one-use trans mount problem.

It felt like taking a giant rubber band out of my car. When I changed it, it made the car feel like the whole driveline was tighter. I would attribute this to energy being stored in bending the stock one, and allowing the rear end to "wrap" a little bit like it does in leaf spring setups.

I have the Spohn arm, Spohn LCA reloc brackets, Lakewood LCAs, and a boxed-in Panhard bar. The whole thing is so much tighter-feeling than stock it's like night and day, almost to the point that it's difficult to spin the tires. It wants to plant them and jump on a hard launch. No wheel hop, no rear end squat, no fistailing (used to be REALLY severe in this car), and no broken trans mounts!!!

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Old Oct 27, 2001 | 04:46 PM
  #4  
Jer82Z28's Avatar
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From: Alberta, Canada
Car: 1987 IROC
Engine: Vortec 350 TPI
Transmission: 7004r
thanks for the info! a few questions still

how much further back is the torque arm relocated? Would I also have to purchase a crossmember for the TA to attach to?
what can you adjust with these TA? just pinion angle?

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Old Oct 27, 2001 | 08:18 PM
  #5  
AT4 T/A's Avatar
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From: Las Vegas
Car: 1989 IROC-Z
Engine: L98 350
Transmission: New 700r4 Done by 11/14/07!
I've got that torque arm too, along with Spohn LCA's and PHR. All of it is great stuff!
Anyway, back to your question...
The torque arm comes with a completely new transmission crossmember which the TA attaches to. The best way I can think of to describe it is a male end on the TA, and a female end at the crossmember. The old mounting point for the TA was on the transmission. The new mounting point will be BELOW the crossmember. The pinion angle is what you adjust at the TA, controlling suspension preload for a hard or soft launch. I don't even drag my car since I've just got a 305, but for the street I can't tell you the difference Spohn made in my rear end!
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Old Oct 27, 2001 | 11:47 PM
  #6  
Jer82Z28's Avatar
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From: Alberta, Canada
Car: 1987 IROC
Engine: Vortec 350 TPI
Transmission: 7004r
so Spohn's TA is actually longer than the stock one?
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Old Oct 28, 2001 | 06:29 AM
  #7  
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From: Esquimalt BC
Will this Torque arm also improve autox applications?
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Old Oct 28, 2001 | 05:10 PM
  #8  
RB83L69's Avatar
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From: Loveland, OH, US
Car: 4
Engine: 6
Transmission: 5
It's essentially the same length as stock, within an inch or 2.

I can't see how it could possibly hurt in a road race to have the rear suspension under better control. It's not the sort of thing (like ladder bars for example) that just totally wouldn't work. I know in my car it didn't make an enormous difference one way or the other to anything about cornering. LCA reloc brackets however made a HUGE difference: they actually gave the car some bite, both side bite and forward. I put in LCAs first, they helped some by themselves; then later the TA, it tightened up everything quite a bit; then later the LCA brackets, which by that time made the biggest improvement (for the least $$$ of all of my rear susp mods I might add).

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Old Oct 29, 2001 | 12:39 AM
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From: Harwich, MA USA
I spent a few hours today installing new adjustable LCAs, new adj. PHR and adj. TA w/ driveshaft loops - all from Spohn. I was VERY impressed with the quality of the parts, and how easy they went in. The instructions were also written very clearly, so even somebody who's never done suspension work before could probably do it.

It made a noticable difference in how my car hooks up and handles. IMO, it's worth the $$!

Rick
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