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

Coilovers or Adjustable shock

Old Apr 1, 2007 | 11:02 PM
  #1  
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From: New Bedford, Ma
Car: 1987 IROC
Engine: Destroked 377
Transmission: TH-400
Axle/Gears: 9inch with 3.70's
Coilovers or Adjustable shock

im looking to find the best setup for the rear suspension. i have stock v6 springs with lakewood drag 50/50 and an airbag. when i launched my car the front left tire came up about a foot and a half and the other tire kinda stood down. im trying to prevent this twist and level out the suspension. what would you guys recommend. thanks alot
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Old Apr 2, 2007 | 08:00 AM
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Re: Coilovers or Adjustable shock

Doesn't sound like a rear suspension issue... sounds more like the body needs stiffening. SFCs perhaps.
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Old Apr 3, 2007 | 09:14 PM
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From: New Bedford, Ma
Car: 1987 IROC
Engine: Destroked 377
Transmission: TH-400
Axle/Gears: 9inch with 3.70's
Re: Coilovers or Adjustable shock

the car has a 10 point cage with subframe connectors
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Old Apr 3, 2007 | 09:20 PM
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Re: Coilovers or Adjustable shock

wheelie bar perhaps.... sounds like your lifting a little hard when ya stomp on it. a wheelie bar will hold those front wheels down.
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Old Apr 3, 2007 | 09:25 PM
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Re: Coilovers or Adjustable shock

damn this car must be badass lol i likeeee.

the twisting with subframes/ and a cage...idk if thats a suspension, u have the airbag already etc, wat do u have as far as the rear suspension goes.... aftermarket LCAs, panhard rod and i would look into a trac lock system with the shortened tubular torque arm. maybe even putting a stiffer spring with the one in the airbag to lessing the twist...maybe that could work

trac lock systems are made from BMR and maybe UMI and sphon
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Old Apr 4, 2007 | 10:29 PM
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From: New Bedford, Ma
Car: 1987 IROC
Engine: Destroked 377
Transmission: TH-400
Axle/Gears: 9inch with 3.70's
Re: Coilovers or Adjustable shock

I have lakewood drag shocks 50/50. Edelbrock Control arms. and a jegs panhard rod. and an airbag. i just orders some spohn coilovers double adjustable, ill see how they work
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Old Apr 8, 2007 | 12:02 PM
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Re: Coilovers or Adjustable shock

If that doesnt work, try the Spohn anti roll bar, it should fix it.
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Old Oct 15, 2007 | 01:16 PM
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From: New Bedford, Ma
Car: 1987 IROC
Engine: Destroked 377
Transmission: TH-400
Axle/Gears: 9inch with 3.70's
Re: Coilovers or Adjustable shock

The Coilovers work awesome and i also install the spohn anti roll bar. they work awesome together.
ill post up a photo soon to show you guys how it works

Last edited by Iroc Adio; Oct 15, 2007 at 01:25 PM.
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Old Oct 19, 2007 | 01:51 PM
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Re: Coilovers or Adjustable shock

Originally Posted by 82TransAM_45
wheelie bar perhaps.... sounds like your lifting a little hard when ya stomp on it. a wheelie bar will hold those front wheels down.
- a wheelie bar will do nothing to stop twist. The sole purpose of a wheelie bar is to unload the rear tires, thus lessening their ability to transfer weight/pick up the front end.

A stiffer spring on one side will work, but the best way would be a stiffer anti-roll bar. A stiffer spring causes un-even reaction in the rear due to different amounts of "stored" energy. Not neccessarily noticable for drag racing, but the proper way is still a stiffer anti-roll. For drag racing I have also been know to preload the anti-roll. If you shorten the driver's link or lengthen the passenger's, the bar will be pre-loaded to help resist the twist.

Coil-overs w/o modifications to the mounting points can be dissasterous. - I believe the spohn kit addresses this though.
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Old Oct 29, 2007 | 04:08 PM
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Re: Coilovers or Adjustable shock

coilovers on a thidgen alone are a waste of time for most.. look elsewhere.
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Old Oct 29, 2007 | 04:17 PM
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From: New Bedford, Ma
Car: 1987 IROC
Engine: Destroked 377
Transmission: TH-400
Axle/Gears: 9inch with 3.70's
Re: Coilovers or Adjustable shock

they work awesome i went to the track yesterday. the car went 9.68 @139 with a 1.33 60ft on a footbrake
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Old Oct 29, 2007 | 05:23 PM
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Car: 89' T/A, 00' Firehawk
Engine: 406 Roller
Transmission: TH700R4 w/2800 stall
Axle/Gears: 3.23 Posi
Re: Coilovers or Adjustable shock

I agree it sounds like you might need to check into the drag anti roll bar. I have no personal experience with them. But what you are describing sounds like that is what you need.
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Old Oct 29, 2007 | 05:30 PM
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From: New Bedford, Ma
Car: 1987 IROC
Engine: Destroked 377
Transmission: TH-400
Axle/Gears: 9inch with 3.70's
Re: Coilovers or Adjustable shock

ya i havent been on here in awhile. then i just got a reply. i do have the double adjustable rear coilovers and the anti roll bar. comes out real straight
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Old Oct 29, 2007 | 05:39 PM
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Engine: 4.530 X 4.250 BBC
Transmission: under rated for this application
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Re: Coilovers or Adjustable shock

pictures,pictures,pictures
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