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

Suspension : 92 Z vs 90 IROC

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Old Apr 8, 2001 | 09:58 AM
  #1  
kiztope's Avatar
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From: Austin, Tx
Car: 92 Formula
Engine: L98
Transmission: A4
Suspension : 92 Z vs 90 IROC

Which one has better components, stock?

Thanks,
Daniel

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Old Apr 9, 2001 | 08:13 AM
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From: Pasadena, MD
Car: '87 Camaro IROC-Z
Engine: 385 HSR
Transmission: 700R4
Axle/Gears: 3.42 posi
'90 IROC, no doubt about it. It had the wonderbar, HD Delco struts up front, Bilsteins in back, very stiff springs, biggest sway bars, and sat 1/2" lower.

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Greg Westphal
'87 IROC 305TPI/A4
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Old Apr 9, 2001 | 10:03 AM
  #3  
Steve91Z28 L98's Avatar
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From: Atlanta, GA/ Clemson, SC
Car: 1991 Camaro Z28
Transmission: T56
I thought that 1989 was the last year GM put the steering box brace (wonder bar) on the IROCs. Maybe I'm wrong though, it could have been 1990. Also, I've been under the impression that the springs for the two cars in question were exactly the same, with both cars sitting at the same ride height. And finally, when GM stopped putting the "wonder bar" on the cars, I thought that the front sway bar grew 2 mm from 34 to 36.

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1991 Z28 - 350 TPI, T56, McLeod street clutch, Pro 5.0 shifter, ported plenum & runners, AFPR, Holley Annihilator ignition box and wires, Hooker shorty headers w/o AIR, Flowmaster muffler, homeade ram-air, SSM subframe connectors, Kenny Brown STB, Global West steering box brace, Steve Spohn adjustable torque arm and T56 crossmember
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Old Apr 9, 2001 | 10:34 AM
  #4  
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From: Pasadena, MD
Car: '87 Camaro IROC-Z
Engine: 385 HSR
Transmission: 700R4
Axle/Gears: 3.42 posi
I'll let Traxion (or anyone else) answer this since he owns a '90 IROC, but I'm positive his came with the Wonderbar and the same swaybars my '87 IROC has.

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Greg Westphal
'87 IROC 305TPI/A4
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Old Apr 9, 2001 | 12:05 PM
  #5  
kiztope's Avatar
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From: Austin, Tx
Car: 92 Formula
Engine: L98
Transmission: A4
<font face="Verdana, Arial" size="2">Originally posted by Steve91Z28 L98:
I've been under the impression that the springs for the two cars in question were exactly the same, with both cars sitting at the same ride height.
</font>
The two cars in question being the two IROC's, or the 92 vs. 90...???
Can you put a wonderbar on a newer car, or will the larger sway bar make it difficult?

Thanks so far, keep em comin!
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Old Apr 9, 2001 | 12:30 PM
  #6  
3RDGENFRANK's Avatar
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From: schererville, IN
Car: 1992 Camaro Z28
Engine: 406
Transmission: T56
Axle/Gears: 4.10 GM 7.5 10-bolt
I just put a wonderbar on my '92 Z28. It took about ten minutes with the help of an impact gun. No problems.

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1992 Camaro Z28; Engine:383 w/Ported Edelbrock RPM heads. Lunati Solid Roller Cam 224/232 .502/.502, Fluidampr, Comp Cams 1.5 Roller rockers and lifters, Comp Cams Triple Valvesprings, SVO 30 lb injectors. Holley/Walbro 255 lph in-tank pump, Haltech E6GM DFI, SLP 1 3/4" headers, 4" Mufflex, T56, SLP Clutch, Pro-5.0 Shifter, 4.10 Gear, Auburn Offroad Pro Posi. Super Ram. 17" X 9.5" Ronal FireHawk Rims w/ 275 40ZR17 Bridgestone RE 730's up front and Nitto Drag NT 555R's out back.

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Old Apr 9, 2001 | 03:19 PM
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MikeH's Avatar
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From: Fla
Car: 90 IROC
Engine: 406
Transmission: GMPP 93/4L60
Axle/Gears: 9 bolt 3.27
My 90 came with the Wonder bar and the 36mm front bar. I replaced the bushings last year so IM positive of the size.

Both are great handling cars!



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Black 90 IROC, L98, A4, 323 gear. SuperRamed 406 in the works!
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Old Apr 9, 2001 | 03:36 PM
  #8  
kiztope's Avatar
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From: Austin, Tx
Car: 92 Formula
Engine: L98
Transmission: A4
Anyone know why they quit putting them on the cars?
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Old Apr 9, 2001 | 04:04 PM
  #9  
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From: Fla
Car: 90 IROC
Engine: 406
Transmission: GMPP 93/4L60
Axle/Gears: 9 bolt 3.27
I thought the base 91-92 Z came with a 34mm front bar?

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Black 90 IROC, L98, A4, 323 gear. SuperRamed 406 in the works!
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