Spring rates.
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Joined: Nov 1999
Posts: 166
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From: Perth Australia
Spring rates.
Does anyone know the standard spring rates [in pounds per inch] for an'85 Z28? How much stiffer are the IROC springs in pounds per inch? I want to lower the car without making it so stiff riding that my fillings drop out of my teeth! 
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Joined: Jul 1999
Posts: 3,838
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From: Another world, some other time
Car: 86 LG4 & 92 TBI Firebird
Engine: The Mighty 305!
Transmission: 700R4
Axle/Gears: 3.42
The base front springs were around 350, the IROC/WS6 were 548 pounds. Dont know the back. If you plan on lowering your car, you dont want to go softer then stock because you will bottom out more.
------------------
-Justin-
T-Top '86 5.0L LG4 700R4 WS6 Now Bilstein equipped!
T-Top '92 5.0L TBI 700R4
My '86 Firebird Homepage
The F-body Model Kit Pictoral Archive (updated 9/18/00)
There can be only one!!
------------------
-Justin-
T-Top '86 5.0L LG4 700R4 WS6 Now Bilstein equipped!
T-Top '92 5.0L TBI 700R4
My '86 Firebird Homepage
The F-body Model Kit Pictoral Archive (updated 9/18/00)
There can be only one!!
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