Shocks too shot, springs too long
#1
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Thread Starter
Shocks too shot, springs too long
I ordered and attempted to install the following to a 1987 GTA:
Rear springs: ACDelco 45H3025
Rear shocks: Koni 30 1265 Sport
Both are advertised as suitable for stock ride height, and the shocks can be used with lowering springs to a max of 1.5".
The shocks are 1" shorter than the stock ones. The springs are a good 2" longer than stock. So they are absolutely incompatible. In fact, when I install these springs and jack up the axle with a half tank of gas, there is barely any compression at all. I would be riding with the shocks at their limits. In fact, you can see that the springs only compress 0.5" because the shocks are still 2.5" away from the bolt holes on the axle.
Can anyone suggest what gives here? Both manufacturers are lying about "stock ride height"?
Rear springs: ACDelco 45H3025
Rear shocks: Koni 30 1265 Sport
Both are advertised as suitable for stock ride height, and the shocks can be used with lowering springs to a max of 1.5".
The shocks are 1" shorter than the stock ones. The springs are a good 2" longer than stock. So they are absolutely incompatible. In fact, when I install these springs and jack up the axle with a half tank of gas, there is barely any compression at all. I would be riding with the shocks at their limits. In fact, you can see that the springs only compress 0.5" because the shocks are still 2.5" away from the bolt holes on the axle.
Can anyone suggest what gives here? Both manufacturers are lying about "stock ride height"?
#2
Junior Member
Thread Starter
Re: Shocks too shot, springs too long
Springs settled a lot when it was on the ground so I was able to install the shocks. The ride height even looks perfect. Crisis averted.
#4
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Re: Shocks too shot, springs too long
Will post an update this weekend. I changed a few things along with this project, it's not quite road-worthy yet, but close!
#5
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Join Date: Nov 2015
Location: West Windsor, NJ
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Car: 1985 Iroc
Engine: LB9, V8 5.0L 305 TPI
Transmission: 700R4
Axle/Gears: G80, ?
Re: Shocks too shot, springs too long
Nice choice on the shocks and springs. I went with the on-car adjustable Koni’s and the Moog CC635 springs. Car rides so much better…hope yours does too.
Your struts probably need to be changed as well.
I bought mine from Sam Strano, best price I found anywhere and he knows his stuff.
http://www.stranoparts.com
Your struts probably need to be changed as well.
I bought mine from Sam Strano, best price I found anywhere and he knows his stuff.
http://www.stranoparts.com
Last edited by 1985_IROC; 07-29-2021 at 11:16 PM.
#6
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Car: '89 Firebird
Engine: 7.0L
Transmission: T56
Re: Shocks too shot, springs too long
Said to a friend I called Strano and he gave me a weird look and asked, How did that go? LOL! We both had same experience.
Last edited by QwkTrip; 07-30-2021 at 07:51 AM.
#7
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Re: Shocks too shot, springs too long
Holy hell, what a difference! Car is no longer a bone shaker, sits level, and has a real crisp ride feel. Love it! Next up are front springs and shocks - currently sitting in a box.
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#8
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Location: West Windsor, NJ
Posts: 188
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Car: 1985 Iroc
Engine: LB9, V8 5.0L 305 TPI
Transmission: 700R4
Axle/Gears: G80, ?
Re: Shocks too shot, springs too long
I talked to him once and every question I asked threw him into a fit of frustration. It took a lot of effort on my part to steer the conversation, but stroking his ego seemed to help a lot with getting him to talk about what I wanted.
Said to a friend I called Strano and he gave me a weird look and asked, How did that go? LOL! We both had same experience.
Said to a friend I called Strano and he gave me a weird look and asked, How did that go? LOL! We both had same experience.
#9
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Join Date: Nov 2015
Location: West Windsor, NJ
Posts: 188
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Car: 1985 Iroc
Engine: LB9, V8 5.0L 305 TPI
Transmission: 700R4
Axle/Gears: G80, ?
Re: Shocks too shot, springs too long
Passenger side: https://www.thirdgen.org/forums/nort...ml#post6426720
Drivers side: https://www.thirdgen.org/forums/nort...ml#post6427077
Last edited by 1985_IROC; 07-30-2021 at 01:27 PM.
#10
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Location: Grand Rapids, MI
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Car: '87 TA
Engine: 6.0LS
Transmission: 4L80e, 3000 stall
Axle/Gears: 9 Bolt 3.27, posi,
Re: Shocks too shot, springs too long
I was blown away what springs, shocks, and struts did to my car. It went from scary and floaty going over bumps at 60mph to zero body roll and much better ride. Eibach sportlines and kyb all the way around. I would definitely recommend installing the front springs, and a wonder bar. Basically anything is a leap and bound over stock.
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1985_IROC (07-30-2021)
#11
Junior Member
Thread Starter
Re: Shocks too shot, springs too long
Yep, front springs and shocks to install next (also ACDelco and Koni), and a wonder bar was the very first thing I did. After that, subframe connectors.
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