4th gen front suspention questions
4th gen front suspention questions
i have the entire front suspention from a 97 camaro that came with my LT1. i was wondering if i could use any of it on my 90. i know everythings different but will it fit and do you think its worth the trouble. thanks
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Joined: Oct 2000
Posts: 659
Likes: 0
From: Chesapeake, VA
Car: '86 TransAm WS6
Engine: 305 TPI
Transmission: Custom TH700R4
Short answer: No and No.
Long answer: It won't fit, not unless you change the K-member, strut towers and front frame rails.
It isn't worth the time, even if it could fit. The 4th Gen suspension was designed to make the ride softer when the car is fitted with wide, low profile tires. On thirdgens with 245's the ride gets pretty harsh, and it can be brutal with 275s. The 4thgens have a better ride than the thirdgens, but the front end feels floaty and disconnected, especially the v-6 models.
If you decide to start upgrading your cornering capabilities, the ThirdGen suspension has a much higher potential than the 4th gen.
If you want something different, look in to the coil-over setups from PA Racing and Roadtech.
Long answer: It won't fit, not unless you change the K-member, strut towers and front frame rails.
It isn't worth the time, even if it could fit. The 4th Gen suspension was designed to make the ride softer when the car is fitted with wide, low profile tires. On thirdgens with 245's the ride gets pretty harsh, and it can be brutal with 275s. The 4thgens have a better ride than the thirdgens, but the front end feels floaty and disconnected, especially the v-6 models.
If you decide to start upgrading your cornering capabilities, the ThirdGen suspension has a much higher potential than the 4th gen.
If you want something different, look in to the coil-over setups from PA Racing and Roadtech.
Supreme Member

Joined: Jul 1999
Posts: 2,755
Likes: 10
From: Ahead of you...
Car: 1984 LG4 Camaro
Engine: 350 Roller Motor
Transmission: Level 10 700R4
Axle/Gears: Strange 12 bolt 3.42
If you decide to start upgrading your cornering capabilities, the ThirdGen suspension has a much higher potential than the 4th gen.
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iTrader: (2)
Joined: Jan 2001
Posts: 4,149
Likes: 3
From: Tampa, FL, USA
Car: 93 240SX
Engine: LQ9
Transmission: T56
Axle/Gears: 3.54 R200 IRS
You can use the rack and pinion from it with a K member from PA and have them put the 4th gen mounts on it.
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Supreme Member
iTrader: (2)
Joined: Jan 2001
Posts: 4,149
Likes: 3
From: Tampa, FL, USA
Car: 93 240SX
Engine: LQ9
Transmission: T56
Axle/Gears: 3.54 R200 IRS
They dont offer it as a "kit" basically they told me they have done it before and it can be done, they will provide a K member with mounts for the 4th gen rack, it will bolt in, also have their bump steer kit, then customer will have to fabricate the steering shaft.
Member

Joined: Jul 1999
Posts: 373
Likes: 1
From: State College, PA
Car: '89 Formula
Engine: 383 Megasquirt
Transmission: T-56
Axle/Gears: 7.625
Wow, do you guys really think the 3rd gen front suspension has more potential than the 4th gen? By no means am I doubting this, I'm just surprised. I've always just figured the 4th gen front end to be just superior because it is a SLA (short long arm) setup. One of you mentioned the front end on a 4th gen being floaty and disconnected. Couldn't this be corrected by just a simple shock and spring change? I don't have any back to back track time experience with a 3rd to 4th gen, but I've driven a friend's 2000 Firehawk on the street with a Koni coil-over kit front and back, and the car feels great. I think the steering on a 4th gen is way more tight and responsive, probably because of the rack & pinion.
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Joined: Jun 2002
Posts: 2,259
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From: Woodstock, GA
Car: 1987 Trans Am
Setup with good aftermarket parts, the 3rd gen still has a slight advantage IMHO. I do like the rack on the 4th gens, but thats to me the only real advantage they have (other than springs that are a lot easier/safer to change). SCCA guys prefer 3rd gens.
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Joined: Mar 2002
Posts: 346
Likes: 1
From: Lowell, In
Car: 1991 Chevy Camaro RS
Engine: 350 TPI
Transmission: 700R4,
Axle/Gears: 3.73 w/SLP Zexel Torsen Limited Sli
I can't name them off hand but I have read in several mags that there is a flaw in the fourth gen front suspension. I think it is in the lower arm geometry but im not sure. This is why the thirdgens out handle them
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