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

Weight jacks or coil overs???

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Old Oct 29, 2015 | 03:07 PM
  #1  
Speedfreak391's Avatar
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From: Grand Rapids, MI
Car: 87 iroc Arctic White w/gold ss stri
Engine: Turbo'd 5.3 in process
Transmission: T-56 w/SPEC stage 3+ clutch
Axle/Gears: 9" Moser w/3.25's
Weight jacks or coil overs???

What would be better for street/autocross/track day car? As it sits my car is sitting on brand new kyb agx struts and shocks, and stock springs. I have looked at lowering springs but would like to keep ride height close to stock maybe a little lower. My main question is what would be better for what I am looking for out of the car? I know the weight jacks come with springs and my kyb's will do the job. (I wanted koni yellows but couldn't afford them at the time of purchase)
I am not looking to really race the car just enjoy it and have it handle really well. I have a few local tracks that have HPDE all the time so what would be best?
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Old Oct 29, 2015 | 03:12 PM
  #2  
Thirdgen89GTA's Avatar
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From: Chicagoland Suburbs
Car: 1989 Trans Am GTA
Engine: LT1, AFR 195cc, 231/239 LE cam.
Transmission: M28 T56
Axle/Gears: 3.23 10bolt waiting to explode.
Re: Weight jacks or coil overs???

Pretty sure weight jacks is going to be the answer due to the stress Coil Overs place on the strut towers.
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Old Oct 29, 2015 | 03:45 PM
  #3  
Speedfreak391's Avatar
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From: Grand Rapids, MI
Car: 87 iroc Arctic White w/gold ss stri
Engine: Turbo'd 5.3 in process
Transmission: T-56 w/SPEC stage 3+ clutch
Axle/Gears: 9" Moser w/3.25's
Re: Weight jacks or coil overs???

that is what I need to know. I hope others will chime in also.
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Old Oct 29, 2015 | 06:21 PM
  #4  
//<86TA>\\'s Avatar
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From: Central NJ
Car: 86 Trans Am
Engine: 408 stroker sbc
Transmission: TKO600
Axle/Gears: Moser full floater m9, 3:70 trutrac
Re: Weight jacks or coil overs???

Coilovers don't work well on these car in the stock configuration. Weight jacks are better suited /thread
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Old Oct 29, 2015 | 09:20 PM
  #5  
Speedfreak391's Avatar
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15 Year Member
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Joined: Apr 2007
Posts: 136
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From: Grand Rapids, MI
Car: 87 iroc Arctic White w/gold ss stri
Engine: Turbo'd 5.3 in process
Transmission: T-56 w/SPEC stage 3+ clutch
Axle/Gears: 9" Moser w/3.25's
Re: Weight jacks or coil overs???

Cool, thanks guys! I have a lot of money into the car already. I am not about to spend Detroit speed money on it. Holy smokes their suspension setups start at 2600. Im sure they work well but wow.
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Old Oct 30, 2015 | 08:45 AM
  #6  
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Re: Weight jacks or coil overs???

We are in the process of ramping up the product line for F-bodies.

Here is the line up for the 3rd Gen guys:

http://umiperformance.com/catalog/in...=index&cPath=6

All UMI products are made in Philipsburg,Pennsylvania out of USA material.
We design,test and race all of our products.
We manufacture most everything we offer including powdercoat "in house".
Nothing is outsourced to other machine shops.

Please feel free to contact us if you have any Tech questions or you need to order anything.We can create custom packages based on customer needs or budgets.

Craig
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Old Nov 2, 2015 | 09:07 AM
  #7  
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From: Pearland, Texas
Car: 1985 Firebird & 1992 Camaro B4C 1LE
Engine: 310 LS1. & 305
Transmission: TH350 & T5
Axle/Gears: 9" 3.73
Re: Weight jacks or coil overs???

What class do you autocross in? Many classes don't allow either, but I'd also vote for weight jackers. Coil-overs eat up space that you can put more tire into at the front. That, plus weight jackers use 'standard' springs that are relatively cheap.

In the past, we've used weight jackers with 5" dia springs, but have since moved to the Wolf Racing weight jacker that uses coil-over springs in the factory spring perch. I like them, but this is on a dedicated autocross car, and you have to be careful jacking the rear end up, or the springs will fall out.
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Old Nov 5, 2015 | 08:04 AM
  #8  
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From: Milltown, NJ
Car: 86 iroc, 02 v6 camaro
Engine: 350 HSR, 3800 V6
Transmission: T56, WCT5
Axle/Gears: 9in 4.11 posi, 3.23 LSD
Re: Weight jacks or coil overs???

weight jacks.... love them. easy to use, easy to install great results, awesome value.

i recommend you call ground control when you order them, their online system over charges for shipping, you can get accurate quote on shipping when you call them.
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Old Nov 5, 2015 | 01:02 PM
  #9  
Speedfreak391's Avatar
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Joined: Apr 2007
Posts: 136
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From: Grand Rapids, MI
Car: 87 iroc Arctic White w/gold ss stri
Engine: Turbo'd 5.3 in process
Transmission: T-56 w/SPEC stage 3+ clutch
Axle/Gears: 9" Moser w/3.25's
Re: Weight jacks or coil overs???

Just ordered them and they gave me a great deal!
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