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What spring rate coil overs to use?

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Old Jul 4, 2016 | 03:29 PM
  #1  
2slowfox's Avatar
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From: Europe/ Estonia
Car: 91 Camaro RS
Engine: LT1
Transmission: T56
Axle/Gears: 4th gen rear
What spring rate coil overs to use?

Hey guys,
Can't finde any information what spring rate coilovers to use in front and rear. I think I will buy QA1 coil overs. If someone have used any and can give me any advise I would be wery appreciated. Plan is to use the car in summer as a daily driver, but it should be stiffer than stock and the handling should be much better . Soon will swap in lt1 and T56 from a 95 firebird . I also purcased bigger rear sway bar 22mm. planning to use 18" wheels and I want to have clearance like this car has and the same free space between wheel and fender.
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Old Jul 6, 2016 | 08:35 AM
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Re: What spring rate coil overs to use?

A good "Generic" starting street coil-over spring rate would probably be 300lb front, 150lb rear.

Craig
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Old Jul 6, 2016 | 03:59 PM
  #3  
articwhiteZ's Avatar
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From: Spokane WA
Car: 92 Lingenfelter Z28 articwhite
Engine: Aluminum 615BBC
Transmission: Th400wbrake/curri entps9" locker
Axle/Gears: 4.11/4.30/4.56
Re: What spring rate coil overs to use?

That's a bit much for front coilovers.. Don't you think? As it would take 600 pounds to compress the springs 1 inch.. that's a bit of a stiff ride...is it not?
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Old Jul 7, 2016 | 07:02 AM
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Re: What spring rate coil overs to use?

Depends on whether you looking for "upgraded handling" or a cushy street ride.Like stated above those are generic rates which are adjusted according to application.

Craig
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Old Jul 7, 2016 | 10:25 AM
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Car: 89 Iroc-z
Engine: 555 BBC Turbo
Transmission: TH400
Axle/Gears: MWC 9” 3.00
Re: What spring rate coil overs to use?

Stock 4thgen front coil over is 292 lbs. not to stiff. I have read a rule of thumb is almost half a conventional spring rate for the coil over in front
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Old Jan 31, 2017 | 12:25 AM
  #6  
2slowfox's Avatar
Thread Starter
Junior Member
10 Year Member
 
Joined: Oct 2013
Posts: 19
Likes: 28
From: Europe/ Estonia
Car: 91 Camaro RS
Engine: LT1
Transmission: T56
Axle/Gears: 4th gen rear
Re: What spring rate coil overs to use?

Bringing this thread back to life.
Still haven't ordered or decided what parts to order, but i have to do it in couple of days.
I have put in a Lt1 from 95 Firebird with T56 gearbox and planning to keep all air conditioning stuff. I will also install sound insulation matts from STP. Upgrade the sound system and adding 1 or 2 subs in the trunk.
So it won't be very light weight car and thats why im asking again for yours help guys to choose right coil overs set up.
I want to lower the car as stated above. The handling and rind should be good and i don't want it to be a bumpy, it will be daily driver in summer period.
So is the spring rate front 300 and rear 150 is ok, or should be something else. Should the spring/ coil overs should be 10" or 12". actually can't find this option on QA1.
Sorry for my english!

Wait for your replies before placing the order.
Thanks guys!

2slowfox
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