IROC Springs
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Junior Member
Joined: Aug 2007
Posts: 49
Likes: 0
From: Michigan
Car: 1987 Silver IROC-Z
Engine: 305 V-8 300HP LT1 Cam
Transmission: T-5 5-speed
Axle/Gears: 3.42
IROC Springs
I have a 1987 Z-28 that I am cloning into a IROC. Are the Z-28 front and rear spring different from the IROC. If so, if I install new IROC springs will this change my suspension more than just a new front end alignment?
Thanks,
Joe
Thanks,
Joe
Junior Member
Joined: Jun 2008
Posts: 83
Likes: 0
From: fredericton N.-B.
Car: 89 iroc-z
Engine: 427 bbc
Transmission: borg warner t-5
Axle/Gears: 3:23 posi
Re: IROC Springs
i beleave the iroc springs are a little stiffer but not sure and if you had changed the springs it would be recomended to do an alingment if the ride height changed to be sure on the springs you could call a local parts store and find out if they have the same part number or could call the dealer they might know
Joined: Oct 2006
Posts: 3,041
Likes: 8
From: West of Toronto
Car: 89 IROC
Engine: 305 TPI / ZZ4 cam
Transmission: Stage 2 700R4, LS1 driveshaft
Axle/Gears: Strange 3.42 w/ Auburn
Re: IROC Springs
IROC springs are stiffer than regular springs. IROC springs can be found on the Spohn website.
Not sure about the alignment but getting one if the car never had one is probably a good idea.
Not sure about the alignment but getting one if the car never had one is probably a good idea.
Supreme Member
Joined: Sep 2002
Posts: 9,192
Likes: 19
From: Cary, North Carolina
Car: 1992 RS
Engine: Carbed 350
Transmission: 700R4
Axle/Gears: 3.42 posi
Re: IROC Springs
Unless you turn a tie rod or change the strut tower mount to a different position, no need for an alignment (unless your car already has an alignment issue).
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