Are 90 Iroc springs stiffer than 91 Z28 springs?
Thread Starter
Junior Member
Joined: Oct 2000
Posts: 49
Likes: 0
From: Hardin, IL.USA
Are 90 Iroc springs stiffer than 91 Z28 springs?
i have a 91 Z and i would like stiffer springs in the rear. i heard that the 90 iroc had very stiff springs and thats what im looking for. i went to car quest but they said all f-bodys had the same rear springs..
what is the deal? did GM make differant springs for the cars?
thanks
what is the deal? did GM make differant springs for the cars?
thanks
Senior Member
Joined: Nov 1999
Posts: 617
Likes: 0
From: bay area, CA
there is a thread on the history/restoration board something like: what are your spring rpo's. The part number for my rear springs is on there. Hope that helps
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90 IROC 5.7l (L98)
ram air, K&N's, air foil,Flows
LIKE A ROC
------------------
90 IROC 5.7l (L98)
ram air, K&N's, air foil,Flows
LIKE A ROC
Senior Member
Joined: Oct 2000
Posts: 916
Likes: 0
From: Tennessee
I'd say the '90 IROC springs are as stiff as GM could get by with. You can run over a quarter in mine and read the date on it! They certainly didn't get any stiffer in 91, so if you can find some 90's it may be an improvement (if that loggin' wagon feeling is your thing).
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