So what makes this '89 IROC-Z so cool?
Thread Starter
Joined: Dec 2001
Posts: 9,946
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From: Chicagoland
Car: 1989 IROC-Z. Original owner
Engine: LB9. Dual Cats. Big Cam
Transmission: World Class T-5
Axle/Gears: BW 3.45
So what makes this '89 IROC-Z so cool?
Low miles, '89 IROC, peanut cammed LB9, single cat exhaust, 2.73 posi, rear drums, base 15x7" IROC wheels. Nice car, other than the paint needing a big detail, this car is a real creampuff.
But what makes it so cool? It's wearing the repro 225/60/16 Gatorbacks that were brought back for the Mustang. So nice to see NEW Gatorbacks on a 3rd gen, even if they weren't the factory size.
http://www.ebay.com/itm/291446046491?_trksid=p2060353.m1438.l2649&ssPageName=STRK%3AMEBIDX%3AIT


But what makes it so cool? It's wearing the repro 225/60/16 Gatorbacks that were brought back for the Mustang. So nice to see NEW Gatorbacks on a 3rd gen, even if they weren't the factory size.
http://www.ebay.com/itm/291446046491?_trksid=p2060353.m1438.l2649&ssPageName=STRK%3AMEBIDX%3AIT
Last edited by chazman; May 1, 2015 at 07:47 PM.
Thread Starter
Joined: Dec 2001
Posts: 9,946
Likes: 644
From: Chicagoland
Car: 1989 IROC-Z. Original owner
Engine: LB9. Dual Cats. Big Cam
Transmission: World Class T-5
Axle/Gears: BW 3.45
Re: So what makes this '89 IROC-Z so cool?
BTW, the rest of the car is really nice as well, if you go through the dozens of photos in the listing, this car is fairly representative of how dealer ordered IROC-Zs were equipped back in the day.
Last edited by chazman; May 1, 2015 at 09:57 PM.
Joined: Oct 2011
Posts: 914
Likes: 16
From: Imperial, Missouri
Car: 89 IROC/89 Vert/87 Vert/89 GTA Vert
Engine: 5.7/5.0/5.0/5.7
Transmission: 700R4
Axle/Gears: 9" 2.77/9" 3:23/9" 3:42
Re: So what makes this '89 IROC-Z so cool?
Are they still making those?
Thread Starter
Joined: Dec 2001
Posts: 9,946
Likes: 644
From: Chicagoland
Car: 1989 IROC-Z. Original owner
Engine: LB9. Dual Cats. Big Cam
Transmission: World Class T-5
Axle/Gears: BW 3.45
Joined: Jan 2013
Posts: 3,038
Likes: 52
From: Newtown, CT
Car: 1987 IROC Original Owner
Engine: LB9
Transmission: M39 MM5
Axle/Gears: G80 G92 J65
Re: So what makes this '89 IROC-Z so cool?
I love the black with the blue stripe - the IROC-Z further back on the door was a nice change for 88 as well.
Do they have any idea how many of those tires they would sell if they made them? Damn!
Do they have any idea how many of those tires they would sell if they made them? Damn!
Thread Starter
Joined: Dec 2001
Posts: 9,946
Likes: 644
From: Chicagoland
Car: 1989 IROC-Z. Original owner
Engine: LB9. Dual Cats. Big Cam
Transmission: World Class T-5
Axle/Gears: BW 3.45
Re: So what makes this '89 IROC-Z so cool?
Supposedly they've been working on a 245/50/16 version for the 3rd gen, but no word on it's release.
Thread Starter
Joined: Dec 2001
Posts: 9,946
Likes: 644
From: Chicagoland
Car: 1989 IROC-Z. Original owner
Engine: LB9. Dual Cats. Big Cam
Transmission: World Class T-5
Axle/Gears: BW 3.45
Re: So what makes this '89 IROC-Z so cool?
Apparently Kelsey is doing another run of the 225/60/15 Gatorbacks in a couple of weeks. Nothing on the 245/50/16s.
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Joined: Jan 2013
Posts: 3,038
Likes: 52
From: Newtown, CT
Car: 1987 IROC Original Owner
Engine: LB9
Transmission: M39 MM5
Axle/Gears: G80 G92 J65
Thread Starter
Joined: Dec 2001
Posts: 9,946
Likes: 644
From: Chicagoland
Car: 1989 IROC-Z. Original owner
Engine: LB9. Dual Cats. Big Cam
Transmission: World Class T-5
Axle/Gears: BW 3.45
Joined: Jan 2013
Posts: 3,038
Likes: 52
From: Newtown, CT
Car: 1987 IROC Original Owner
Engine: LB9
Transmission: M39 MM5
Axle/Gears: G80 G92 J65
Thread Starter
Joined: Dec 2001
Posts: 9,946
Likes: 644
From: Chicagoland
Car: 1989 IROC-Z. Original owner
Engine: LB9. Dual Cats. Big Cam
Transmission: World Class T-5
Axle/Gears: BW 3.45
Joined: Apr 2000
Posts: 3,938
Likes: 99
From: Huntsville AL
Car: 88GTA
Engine: 5.7TPI
Transmission: Auto
Axle/Gears: 3.27
Thread Starter
Joined: Dec 2001
Posts: 9,946
Likes: 644
From: Chicagoland
Car: 1989 IROC-Z. Original owner
Engine: LB9. Dual Cats. Big Cam
Transmission: World Class T-5
Axle/Gears: BW 3.45
Re: So what makes this '89 IROC-Z so cool?
I'd be in for 2 sets right now as well. I have no idea why they just don't release them. They've had the 245/50/16 size in the pipeline for years. And I'm pretty confident they'd sell more of those to us, than they have the 225/60/15s to Mustang guys.
Joined: Apr 2000
Posts: 3,938
Likes: 99
From: Huntsville AL
Car: 88GTA
Engine: 5.7TPI
Transmission: Auto
Axle/Gears: 3.27
Re: So what makes this '89 IROC-Z so cool?
I hear ya. Now if we needed 22's or 24's, the options would be ENDLESS!
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From: Doghouse ······································ Car: 1989 Formula 350 Vert Engine: 350 L98 Transmission: 700R4 Axle/Gears: B&W 3.27
Car: 87 Formula T-Top, 87 Formula HT
Engine: 5.1L TPI, 5.0L TPI
Transmission: 700R4, M5
Axle/Gears: Sag 3.73, B&W 3.45
Thread Starter
Joined: Dec 2001
Posts: 9,946
Likes: 644
From: Chicagoland
Car: 1989 IROC-Z. Original owner
Engine: LB9. Dual Cats. Big Cam
Transmission: World Class T-5
Axle/Gears: BW 3.45
Re: So what makes this '89 IROC-Z so cool?
I spoke to smallhurst from this thread several years ago. https://www.thirdgen.org/forums/hist...l-offered.html
Back then, he said they were looking for original tires to use as patterns and I told him that I had a 10K mile set off my '89 sitting in my attic. I believe that they have since sourced some original tires to use as patterns. I have no idea what the delay is about. I certainly don't know why they'd come out with a 225/60/15 version and 3+ years later not have them in our size.
Back then, he said they were looking for original tires to use as patterns and I told him that I had a 10K mile set off my '89 sitting in my attic. I believe that they have since sourced some original tires to use as patterns. I have no idea what the delay is about. I certainly don't know why they'd come out with a 225/60/15 version and 3+ years later not have them in our size.
Thread Starter
Joined: Dec 2001
Posts: 9,946
Likes: 644
From: Chicagoland
Car: 1989 IROC-Z. Original owner
Engine: LB9. Dual Cats. Big Cam
Transmission: World Class T-5
Axle/Gears: BW 3.45
Re: So what makes this '89 IROC-Z so cool?
Sold for $8800. Sweet car.
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