What do we think of this IROC?
Thread Starter
Joined: Dec 2001
Posts: 9,937
Likes: 636
From: Chicagoland
Car: 1989 IROC-Z. Original owner
Engine: LB9. Dual Cats. Big Cam
Transmission: World Class T-5
Axle/Gears: BW 3.45
What do we think of this IROC?
Base interior, base L03, base 15" wheels, someone painted the gfx gold, kinda pricey, but it's sort of catching my eye...
http://chicago.craigslist.org/nch/ctd/2150353954.html
http://chicago.craigslist.org/nch/ctd/2150353954.html
Re: What do we think of this IROC?
Base interior, base L03, base 15" wheels, someone painted the gfx gold, kinda pricey, but it's sort of catching my eye...
http://chicago.craigslist.org/nch/ctd/2150353954.html
http://chicago.craigslist.org/nch/ctd/2150353954.html
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Joined: Feb 2007
Posts: 301
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From: Pittsburgh Pa
Car: 1991 Camaro RS
Engine: 305
Transmission: 700 R4
Re: What do we think of this IROC?
It looks like a nice IROC. You're gonna catch hell on here for it being an L03 but be at least it's a 5 speed and it has low miles.
Re: What do we think of this IROC?
I'd say make sure it's actually got a B4Z on the RPO code, that paint scheme is ugly IMO and no IROCs came from the factory like that which is a turn off. Additionally the base seats recovered in leather is a turn off.
On the other hand, I like that there are LO3 IROCs running around because I can always say "Hey well, I got the same motor as some IROCs." Albeit TPI was standard for IROCs in 1990. Lol.
On the other hand, I like that there are LO3 IROCs running around because I can always say "Hey well, I got the same motor as some IROCs." Albeit TPI was standard for IROCs in 1990. Lol.
Thread Starter
Joined: Dec 2001
Posts: 9,937
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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
Re: What do we think of this IROC?
I emailed them afew week ago asking for a picture of the RPO sticker in the console. They responded that the locks were frozen and couldn't get inside it. Ummm, okay.
I agree that about $4K would be it's upper range, assuming no surprises.
I agree that about $4K would be it's upper range, assuming no surprises.
Re: What do we think of this IROC?
Guess they don't want to sell the car, or are hiding something. I'd steer clear.
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Joined: Dec 2009
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From: Chilliwack BC
Car: White 1987 IROC-Z
Engine: 305 TPI LB9, 215 HP
Transmission: Borg-Warner T5 NWC
Axle/Gears: Borg-Warner 7.75 with 3.27 ratio
Re: What do we think of this IROC?
I'd say make sure it's actually got a B4Z on the RPO code, that paint scheme is ugly IMO and no IROCs came from the factory like that which is a turn off. Additionally the base seats recovered in leather is a turn off.
On the other hand, I like that there are LO3 IROCs running around because I can always say "Hey well, I got the same motor as some IROCs." Albeit TPI was standard for IROCs in 1990. Lol.
On the other hand, I like that there are LO3 IROCs running around because I can always say "Hey well, I got the same motor as some IROCs." Albeit TPI was standard for IROCs in 1990. Lol.
IIRC B4Z disappeared once the IROC-Z became it's own model in 1988, I have a 1989 and it doesn't have B4Z, but it has Z28, which for 1989 was the IROC-Z package!!
Therefore, this one should have Z28, and not B4Z!!
Basically, all IROC's 1985 - 1987 were Z-28's with the "B4Z" IROC-Z option package, and from 1988 all IROC's were RS's with "Z28" IROC-Z option packages!! Remember, the Z28 model was dropped in model year 1988!!
Also, the interior came with leather as an option!!
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Re: What do we think of this IROC?
Ahh, good lookin' out; that makes sense, thanks for the clarification.
Was leather an option on the base interior though? I know you could get leather as an option on the custom cloth, but base leather?
Either way, the paint scheme isn't original.
Was leather an option on the base interior though? I know you could get leather as an option on the custom cloth, but base leather?
Either way, the paint scheme isn't original.
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Joined: Dec 2009
Posts: 850
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From: Chilliwack BC
Car: White 1987 IROC-Z
Engine: 305 TPI LB9, 215 HP
Transmission: Borg-Warner T5 NWC
Axle/Gears: Borg-Warner 7.75 with 3.27 ratio
Re: What do we think of this IROC?
The leather interior was basically the same as the base interior except that it had leather, as opposed to cloth!!
It looked the same, no change in the pattern, it was just leather!!

As for the paint, I first thought it was an RS, and someone was IROCing it!!

This one has the base interior, the leather that you see is actually vinyl!!
Last edited by 87IROC-DAN61; Jan 9, 2011 at 01:34 AM.
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From: East Tennessee
Car: 1992 Z28 Heritage Edition
Engine: L98
Transmission: T56
Axle/Gears: 3.23:1
Re: What do we think of this IROC?
IF its an IROC, its definitely a stripped down, based-as-they-come model. I tend to believe its a real IROC as it has NO options, the base engine/trans, the 15" IROC wheels, and the vinyl seats - Looks like whoever ordered bought it new wanted their car to say IROC and didn't care about much else.
All things considered though, its not worth more than $4k. W/O the options, the desire level just isn't there to command more money.... to me.
All things considered though, its not worth more than $4k. W/O the options, the desire level just isn't there to command more money.... to me.
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From: Sarasota FL
Car: 99 WS6 / 00 SS / 11 CTS-V / 13 300
Engine: LS1 / LS1 / LSA / 5.7 Hemi
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Axle/Gears: 3.23 / 3.42 Auburn / 3.23 / 2.62
Re: What do we think of this IROC?
Charlie,
FYI, either someone switched the door panels to custom cloth, or took out the custom cloth seats. Being so basic, I'd say someone switched the door panels, but with the kick panels being carpeted, I'd say it was a custom cloth car to begin with. I'd say its worth more than $4k, but then again, I pay for cleanliness. Paint the gfx, and it looks like it'd be a nice car.
I'd say up to $4,500-5,000 is reasonable if the rest of it is clean and tight.
FYI, either someone switched the door panels to custom cloth, or took out the custom cloth seats. Being so basic, I'd say someone switched the door panels, but with the kick panels being carpeted, I'd say it was a custom cloth car to begin with. I'd say its worth more than $4k, but then again, I pay for cleanliness. Paint the gfx, and it looks like it'd be a nice car.
I'd say up to $4,500-5,000 is reasonable if the rest of it is clean and tight.
Thread Starter
Joined: Dec 2001
Posts: 9,937
Likes: 636
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: What do we think of this IROC?
Charlie,
FYI, either someone switched the door panels to custom cloth, or took out the custom cloth seats. Being so basic, I'd say someone switched the door panels, but with the kick panels being carpeted, I'd say it was a custom cloth car to begin with. I'd say its worth more than $4k, but then again, I pay for cleanliness. Paint the gfx, and it looks like it'd be a nice car.
I'd say up to $4,500-5,000 is reasonable if the rest of it is clean and tight.
FYI, either someone switched the door panels to custom cloth, or took out the custom cloth seats. Being so basic, I'd say someone switched the door panels, but with the kick panels being carpeted, I'd say it was a custom cloth car to begin with. I'd say its worth more than $4k, but then again, I pay for cleanliness. Paint the gfx, and it looks like it'd be a nice car.
I'd say up to $4,500-5,000 is reasonable if the rest of it is clean and tight.
Last edited by chazman; Jan 9, 2011 at 02:52 PM.
Re: What do we think of this IROC?
A 70k mile car with a repaint, swapped interior parts, broken seat belt sleeves... Verify the facts, even if they're correct, it's about $4,000 over priced.
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From: Sarasota FL
Car: 99 WS6 / 00 SS / 11 CTS-V / 13 300
Engine: LS1 / LS1 / LSA / 5.7 Hemi
Transmission: 4L60E / T-56 / 6L80E / W5A80
Axle/Gears: 3.23 / 3.42 Auburn / 3.23 / 2.62
Re: What do we think of this IROC?
Been thinking about this...as the owner of an M5 LO3, I'd advise you to pass. I know the stick is cool and all, but I'd much rather have an LB9. 45 more HP stock is a big, big deal. I'm actually looking to carb my LO3 now that I don't have to meet emissions anymore. Chip burning is way more than I wanna chew off, and seeing as how I have so much money tied up in it, why not tie up a few more thousand and make it run hard??
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From: Kent, WA
Car: 83 z28
Engine: boat anchor 305 (ex CFI)
Transmission: 700r4
Axle/Gears: 3.23 10 bolt
Thread Starter
Joined: Dec 2001
Posts: 9,937
Likes: 636
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: What do we think of this IROC?
Been thinking about this...as the owner of an M5 LO3, I'd advise you to pass. I know the stick is cool and all, but I'd much rather have an LB9. 45 more HP stock is a big, big deal. I'm actually looking to carb my LO3 now that I don't have to meet emissions anymore. Chip burning is way more than I wanna chew off, and seeing as how I have so much money tied up in it, why not tie up a few more thousand and make it run hard?? 


Honestly, I've got my hands full with the cars I have. I don't even know why I spend time looking for more - but I do.
Actually, the LO3 doesn't bother me, or even an LG4. As long as it's clean, fairly unmolested and original and it's a stick.
Joined: Jul 2000
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From: In a mint Third Gen!
Car: Red 87 IROC-Z28 T-Top
Engine: 5.7 Tuned Port Injection
Transmission: 700R4 Auto
Axle/Gears: BW 9-Bolt 3.27
Re: What do we think of this IROC?
You are addicted my friend! So am I, but I just look and want at this point since I'm pretty content. You actually consider buying all the time LOL, for me it's once in a while. I always laugh when I see these posts. You have a mint car and a nice driver though, what would you really do with another?!
Thread Starter
Joined: Dec 2001
Posts: 9,937
Likes: 636
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: Jul 2000
Posts: 7,386
Likes: 1
From: In a mint Third Gen!
Car: Red 87 IROC-Z28 T-Top
Engine: 5.7 Tuned Port Injection
Transmission: 700R4 Auto
Axle/Gears: BW 9-Bolt 3.27
Re: What do we think of this IROC?
Exactly LOL. Cars are a difficult and demanding hobby. Maybe you should keep saving up for a 5th Gen!
Thread Starter
Joined: Dec 2001
Posts: 9,937
Likes: 636
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: Jul 2000
Posts: 7,386
Likes: 1
From: In a mint Third Gen!
Car: Red 87 IROC-Z28 T-Top
Engine: 5.7 Tuned Port Injection
Transmission: 700R4 Auto
Axle/Gears: BW 9-Bolt 3.27
Re: What do we think of this IROC?
Haha, I know how you feel about them. I like them, even though they are too heavy and aren't as nimble handling-wise. Our cars are now lightweights!
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From: Sarasota FL
Car: 99 WS6 / 00 SS / 11 CTS-V / 13 300
Engine: LS1 / LS1 / LSA / 5.7 Hemi
Transmission: 4L60E / T-56 / 6L80E / W5A80
Axle/Gears: 3.23 / 3.42 Auburn / 3.23 / 2.62
Re: What do we think of this IROC?
You are addicted my friend! So am I, but I just look and want at this point since I'm pretty content. You actually consider buying all the time LOL, for me it's once in a while. I always laugh when I see these posts. You have a mint car and a nice driver though, what would you really do with another?!
I have a mint original IROC...an original TA that needs some TLC, but with some elbow grease will be almost as nice as the IROC...and my RS that is like my canvas for my theory of the "ultimate third gen driver"...i.e. the stereo from hell, alarm from hell, bad *** exhaust, shiny wheels, and soon to be the recipient of about 100 extra HP, rear disc brakes and a locker
Eventually, 2 clean examples and a resto-mod...and I still check out others as often as Charlie does. As much as I love my 30th Z28, if I sold it, wouldn't a 5 speed t-top digital dash GTA be really cool? Or, a TTA would look nice in there. How about a 5 speed LB9 IROC to go with the L98? The mind wanders...

I still disagree with Charlie over the LO3 though
It isn't a bad motor...it just isn't a great one. 25 MPG at 80 is nice, it sounds cool uncorked, and it has never set an SES light (unlike both my "more complex" TPI cars). Otherwise, there is no point to an LO3... Joined: Jul 2000
Posts: 7,386
Likes: 1
From: In a mint Third Gen!
Car: Red 87 IROC-Z28 T-Top
Engine: 5.7 Tuned Port Injection
Transmission: 700R4 Auto
Axle/Gears: BW 9-Bolt 3.27
Re: What do we think of this IROC?
I understand it alright, if I had space and the resources I'd probably have 5-10, but this is not reality LOL. Seems not to matter for you guys though!
Thread Starter
Joined: Dec 2001
Posts: 9,937
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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
Re: What do we think of this IROC?
You know what I think it is guys? I think I put so much energy and anticipation into the 5th gen, and when it finally comes out I'm just like ugh, this is not what I was hoping for at all. So I guess I've gotta put all my Camaro energy into something.
Tell us what you have planned. You mentioned a carb.
Tell us what you have planned. You mentioned a carb.
Last edited by chazman; Jan 9, 2011 at 10:58 PM.
Re: What do we think of this IROC?
Not to get too far off topic here, but I think what bugs me about the 5th gen, is that it's not a Camaro. It's that stupid, ugly, GTO concept car from the days of the Pontiac Aztec. GM just slapped a different cosmetic treatment on it, and shoved it down our throats a decade later as a NEW!!! Camaro. It doesn't work as a retro, because it doesn't look like any of the Camaros that came before it. It's not like the (relatively) new Mustang or Challenger which were drawn from the ground up as modernized late 60's/early 70's muscle cars. Instead the Camaro was a completely new design, redrawn to incorporate features of the classic car. I'd liken it to all the Mustangs before 2005, with their vertical three place tail lights, hood scoops, and side scoops. It's too little to make the association with the car's identity. I will say it's a step up from the late model production GTO that looked like every other Grand Am, Grand Prix, Bonneville, or generic Pontiac offerings. It's just not the killer retro styled car that looks like a 1969 Camaro when you squint, or haven't had enough sleep... It could have been so much cooler.
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From: Los Angeles (310)
Car: 89 IROC-VERT
Engine: TPI 305
Transmission: 700R4 Auto
Axle/Gears: 2.77
Re: What do we think of this IROC?
The car looks okay. At least its a stick shift. But who in the hell painted the gfx, gold!?!? SO GAY!!!
Joined: Mar 2010
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From: tn.
Car: 1990 firebird,1989 Iroc z,1986 fire
Engine: 3.1lt,5.7tpi,3.1mpfi
Transmission: auto,auto
Axle/Gears: 273?277
Re: What do we think of this IROC?
I've taken pics of some of my cars.It's hard to get the small dents to show up even when you want them to.Everyone knows that the part of the drivers seat to take a pic of is the spot where all the rips take place.I didn't see a good pic of that spot on the drivers seat.I like the overall clean look,but auto dealers will clean on a car for hours because they know first impresons sell cars,I've sean some real nice cars on our site go for alot less than they want.We can get a nice Iroc w/l98 and clean it up,put a little money in it and know what you got.for about half of what they are asking for there 2 tone camaro.
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From: Marietta, GA
Car: '84 Z28
Engine: L69
Transmission: 700R4
Axle/Gears: 3.73
Re: What do we think of this IROC?
V8, 5spd, Hardtop, no power (windows, locks). I like it. You can paint the gfx later. As for the interior, the door panels are definetly interior code 66C (Med Beechwood custom cloth). The seats look like 1982-85 base units covered in vinyl. They definetly don't look like 4th gen seats.
I'd buy it for a driver.
I'd buy it for a driver.
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From: Sarasota FL
Car: 99 WS6 / 00 SS / 11 CTS-V / 13 300
Engine: LS1 / LS1 / LSA / 5.7 Hemi
Transmission: 4L60E / T-56 / 6L80E / W5A80
Axle/Gears: 3.23 / 3.42 Auburn / 3.23 / 2.62
Re: What do we think of this IROC?
You know what I think it is guys? I think I put so much energy and anticipation into the 5th gen, and when it finally comes out I'm just like ugh, this is not what I was hoping for at all. So I guess I've gotta put all my Camaro energy into something.
Tell us what you have planned. You mentioned a carb.
Tell us what you have planned. You mentioned a carb.
I have put all my Camaro energy into third gens, without question. They were the cars I'd always wanted growing up, and when the 5th gen turned into a bloated pig that would require $32k+ to get 8 cylinders, I said forget it...not to mention, the interior looks like a caricature of what an actual car interior should look like 
The sad (but in many ways good) thing was that the RS was supposed to tide me over until the 5th gen showed up. I bought it 5 months after NAIAS, and figured I'd keep it cheap, run it and sell it for cheap when I could order a 5th gen. We see how that went

As for the RS, I no longer have to pass emissions in MA anymore. I had contemplated selling it to get something more "exciting" to drive, but after investing so much time and money into it, investing some more in making it faster versus simply selling it seems to make more sense to me. Plus, I am friends with a GM tech who's willing to help/teach me for free, so its all good now
Plans are to add a 600 CFM Edelbrock carb (something I feel redne(k doing, but everyone I talk to says its my best option), add Summit Vortec heads, Edelbrock Performer RPM aluminum intake, and an LT4 hot cam with 1.6 RRs 
I'm trying to get as close to an even 300hp as I can. I think this will put me in the 280 range, so I may have to bump the cam specs a little. I'm adamant about keeping the 305 to keep costs down (these parts will set me back about $1,700 or so), keep it easier, and I think a screaming 305 will be fun
Years down the road, if these cars really take off in value and I want an original Summer cruiser again, I can always swap the TBI back and learn how to properly tune.If I didn't have an original IROC, and an original TA, I wouldn't take this car so far. But with almost 120k on it, and being an RS, why not? I still saved it from the crusher, regardless
Last edited by Jason E; Jan 10, 2011 at 01:40 PM.
Thread Starter
Joined: Dec 2001
Posts: 9,937
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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
Re: What do we think of this IROC?
Think about that Jason, that was 5 years ago last week. I remember how all of the invited Camaro enthusiasts had such high hopes for that car back then. And how many of us became so disappointed with the final product. Welp, there's always the 6th gen.
Good luck with your RS. You've got too much invested, (time and money), and it's too nice to get rid of now. I'm glad you're keeping the 305 too.
Good luck with your RS. You've got too much invested, (time and money), and it's too nice to get rid of now. I'm glad you're keeping the 305 too.
Last edited by chazman; Jan 10, 2011 at 02:50 PM.
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From: King of Prussia Pa
Car: 88 IROC T-Top
Engine: 5.7
Transmission: Automatic
Axle/Gears: 2.73
Re: What do we think of this IROC?
Not to get too far off topic here, but I think what bugs me about the 5th gen, is that it's not a Camaro. It's that stupid, ugly, GTO concept car from the days of the Pontiac Aztec. GM just slapped a different cosmetic treatment on it, and shoved it down our throats a decade later as a NEW!!! Camaro. It doesn't work as a retro, because it doesn't look like any of the Camaros that came before it. It's not like the (relatively) new Mustang or Challenger which were drawn from the ground up as modernized late 60's/early 70's muscle cars. Instead the Camaro was a completely new design, redrawn to incorporate features of the classic car. I'd liken it to all the Mustangs before 2005, with their vertical three place tail lights, hood scoops, and side scoops. It's too little to make the association with the car's identity. I will say it's a step up from the late model production GTO that looked like every other Grand Am, Grand Prix, Bonneville, or generic Pontiac offerings. It's just not the killer retro styled car that looks like a 1969 Camaro when you squint, or haven't had enough sleep... It could have been so much cooler.
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From: Sarasota FL
Car: 99 WS6 / 00 SS / 11 CTS-V / 13 300
Engine: LS1 / LS1 / LSA / 5.7 Hemi
Transmission: 4L60E / T-56 / 6L80E / W5A80
Axle/Gears: 3.23 / 3.42 Auburn / 3.23 / 2.62
Re: What do we think of this IROC?
Not to get too far off topic here, but I think what bugs me about the 5th gen, is that it's not a Camaro. It's that stupid, ugly, GTO concept car from the days of the Pontiac Aztec. GM just slapped a different cosmetic treatment on it, and shoved it down our throats a decade later as a NEW!!! Camaro. It doesn't work as a retro, because it doesn't look like any of the Camaros that came before it. It's not like the (relatively) new Mustang or Challenger which were drawn from the ground up as modernized late 60's/early 70's muscle cars. Instead the Camaro was a completely new design, redrawn to incorporate features of the classic car. I'd liken it to all the Mustangs before 2005, with their vertical three place tail lights, hood scoops, and side scoops. It's too little to make the association with the car's identity. I will say it's a step up from the late model production GTO that looked like every other Grand Am, Grand Prix, Bonneville, or generic Pontiac offerings. It's just not the killer retro styled car that looks like a 1969 Camaro when you squint, or haven't had enough sleep... It could have been so much cooler.

Charlie,
Yeah, once you have officially hit mid-teens as an investment in a '91 Camaro, there is no going back! I'm going to the track with it in late April...only my second time ever, and my first time with this car. I THINK if I can launch it well (my peg leg will hurt for sure), I could run a mid 15s with it. I'm going to run it again after the motor mods...I'll be adding either a 3.42 or 3.73 to it as well. At that point, 14 flat is the goal

Add nice crossdrilled discs on all 4 corners, a T56, maybe some Hotchkiss or BMR suspension goodies and some Bilsteins, and I'll be at $20 grand. Eh, whatever
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From: East Tennessee
Car: 1992 Z28 Heritage Edition
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Re: What do we think of this IROC?
Not to get too far off topic here, but I think what bugs me about the 5th gen, is that it's not a Camaro. It's that stupid, ugly, GTO concept car from the days of the Pontiac Aztec. GM just slapped a different cosmetic treatment on it, and shoved it down our throats a decade later as a NEW!!! Camaro. It doesn't work as a retro, because it doesn't look like any of the Camaros that came before it. It's not like the (relatively) new Mustang or Challenger which were drawn from the ground up as modernized late 60's/early 70's muscle cars. Instead the Camaro was a completely new design, redrawn to incorporate features of the classic car. .

Here's the car in question, a 1999 GTO Concept, from which the 2010 CAMARO was born.
I like the overall style and of the 3 RWD Retro cars, I like the Camaro best, but it's proportions are ALL wrong. It's big, it's porky, it just looks fat and overweight.
Oh well, if the retro trend continues, I can't wait for the 7th gen, which should look like a fat version of our cars...
The Camaro is dead as a new car - totally devoid of 'cool'. At $30k+, it's just retarded.
Re: What do we think of this IROC?
Before the present version, each version of the Camaro took something from the previous car and improved on it. The lineage is clear enough that you could spot the car driving down the road with no clue what it was and as long as you'd seen a Camaro of the previous generation you could probably identify it. Get rid of the gills and the emblems and the new Camaro doesn't look much like a Camaro at all.
Re: What do we think of this IROC?
Charlie,
Yeah, once you have officially hit mid-teens as an investment in a '91 Camaro, there is no going back! I'm going to the track with it in late April...only my second time ever, and my first time with this car. I THINK if I can launch it well (my peg leg will hurt for sure), I could run a mid 15s with it. I'm going to run it again after the motor mods...I'll be adding either a 3.42 or 3.73 to it as well. At that point, 14 flat is the goal
Add nice crossdrilled discs on all 4 corners, a T56, maybe some Hotchkiss or BMR suspension goodies and some Bilsteins, and I'll be at $20 grand. Eh, whatever
Yeah, once you have officially hit mid-teens as an investment in a '91 Camaro, there is no going back! I'm going to the track with it in late April...only my second time ever, and my first time with this car. I THINK if I can launch it well (my peg leg will hurt for sure), I could run a mid 15s with it. I'm going to run it again after the motor mods...I'll be adding either a 3.42 or 3.73 to it as well. At that point, 14 flat is the goal

Add nice crossdrilled discs on all 4 corners, a T56, maybe some Hotchkiss or BMR suspension goodies and some Bilsteins, and I'll be at $20 grand. Eh, whatever


Sure is nice to let the miles roll without a care in the world, eh?
EDIT: Why carb it though? A TPI swap isn't too difficult given that all the parts are readily available from Hawk's/Thirdgen Ranch.
Last edited by puma1552; Jan 10, 2011 at 10:09 PM.
Thread Starter
Joined: Dec 2001
Posts: 9,937
Likes: 636
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: What do we think of this IROC?
The main problem with the 5th gen is that GM didn't have the money to properly develop it nor the will to create an appropriate architecture for it. Essentially, they took the concept car's styling and plopped it on top of a LARGE/HEAVY sedan architecture. And you can tell as much when you drive it.
Jason, you don't think you can get into the low 14's with a TBI? I betcha you could. In fact, I wouldn't mind finding an LO3/M5 and just fiddling around with it - hence the car at the start of the thread. That stuff in kind of fun for me.
That's one of the reasons I bought my Crossfire. I always had an itch to get one of those and get it running nicely. It was/ran like a complete POS when I got it. I mean it just ran horribly and was incredibly slow. NOW, I can keep up with other cars in traffic.
Just kidding, it runs pretty well now. My butt dyno says it's in the '15's. I'm sure the day I got it, it was in the '20's. No lie.
Jason, you don't think you can get into the low 14's with a TBI? I betcha you could. In fact, I wouldn't mind finding an LO3/M5 and just fiddling around with it - hence the car at the start of the thread. That stuff in kind of fun for me.
That's one of the reasons I bought my Crossfire. I always had an itch to get one of those and get it running nicely. It was/ran like a complete POS when I got it. I mean it just ran horribly and was incredibly slow. NOW, I can keep up with other cars in traffic.
Just kidding, it runs pretty well now. My butt dyno says it's in the '15's. I'm sure the day I got it, it was in the '20's. No lie. Last edited by chazman; Jan 11, 2011 at 12:34 AM.
Senior Member

Joined: Feb 2010
Posts: 695
Likes: 11
From: Oregon
Car: 1991 Z28
Engine: L31-R 350 w/ EBL P4
Transmission: 700R4
Axle/Gears: 2.73
Re: What do we think of this IROC?
I dislike the new Camaro's, they don't look like a Camaro. To me Camaro's should be low to the ground, with slim body lines and an overall low look. The new Camaro's are just short, bulky and tall; nothing like what a Camaro should look like in my mind.
2011 Norwood Gathering
ThirdGen Firebird Rep
ThirdGen Firebird Rep
Joined: Jun 2000
Posts: 3,435
Likes: 4
From: Sarasota FL
Car: 99 WS6 / 00 SS / 11 CTS-V / 13 300
Engine: LS1 / LS1 / LSA / 5.7 Hemi
Transmission: 4L60E / T-56 / 6L80E / W5A80
Axle/Gears: 3.23 / 3.42 Auburn / 3.23 / 2.62
Re: What do we think of this IROC?
The main problem with the 5th gen is that GM didn't have the money to properly develop it nor the will to create an appropriate architecture for it. Essentially, they took the concept car's styling and plopped it on top of a LARGE/HEAVY sedan architecture. And you can tell as much when you drive it.
Jason, you don't think you can get into the low 14's with a TBI? I betcha you could. In fact, I wouldn't mind finding an LO3/M5 and just fiddling around with it - hence the car at the start of the thread. That stuff in kind of fun for me.
That's one of the reasons I bought my Crossfire. I always had an itch to get one of those and get it running nicely. It was/ran like a complete POS when I got it. I mean it just ran horribly and was incredibly slow. NOW, I can keep up with other cars in traffic.
Just kidding, it runs pretty well now. My butt dyno says it's in the '15's. I'm sure the day I got it, it was in the '20's. No lie.
Jason, you don't think you can get into the low 14's with a TBI? I betcha you could. In fact, I wouldn't mind finding an LO3/M5 and just fiddling around with it - hence the car at the start of the thread. That stuff in kind of fun for me.
That's one of the reasons I bought my Crossfire. I always had an itch to get one of those and get it running nicely. It was/ran like a complete POS when I got it. I mean it just ran horribly and was incredibly slow. NOW, I can keep up with other cars in traffic.
Just kidding, it runs pretty well now. My butt dyno says it's in the '15's. I'm sure the day I got it, it was in the '20's. No lie.I can get into the low 14s with TBI...IF I learn to tune...IF I add 350 injectors and a new fuel pump...IF I can make the thing run right. My friend has made a pretty convincing argument to install a wideband 02 sensor and tune the carb with readings from that. He did that with the carbed 350 in his boat, and it made a huge difference.
At the same point, I have several months to figure this out. I've been messing with engine ideas for this car for years. If I can make sense of keeping TBI, by all means I will. It would be keeping more with the original flavor of the car...something I like.
Before I embark on this, I have other restoration things to do with the other two. The IROC needs an intake gasket, and I need to install a new A/C compressor in the TA (does anyone know if there's a rebuild kit for one? I'd rather rebuild my original Harrison unit), figure out its cold start issue (takes 2-5 times to start and catch in weather under 45 degrees or so...the colder it is the worse it is) and figure out why the TC doesn't lock. After that, the question is do I spend money on making the RS faster, or put it towards the repaint the Trans Am desperately needs?
I may just do that first, which would put the RS off a good year...
Thread Starter
Joined: Dec 2001
Posts: 9,937
Likes: 636
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: What do we think of this IROC?
I went to the Camaro gathering at Indy in '08. GM had afew pre-production 2010 Camaros there. As part of the package deal, everyone got 1 lap at the Indy speedway. As I was waiting my turn to get on at the entrance in my '83, the 5th gens were getting off. They drove right next to me and I was eye level with their door handles, I had to look up to see the drivers. I thought, dear Lord, this thing is the size of an SUV.
Re: What do we think of this IROC?
I went to the Camaro gathering at Indy in '08. GM had afew pre-production 2010 Camaros there. As part of the package deal, everyone got 1 lap at the Indy speedway. As I was waiting my turn to get on at the entrance in my '83, the 5th gens were getting off. They drove right next to me and I was eye level with their door handles, I had to look up to see the drivers. I thought, dear Lord, this thing is the size of an SUV.
I went to a dealer to look at them after hours, and my car was literally a full foot shorter at the roof. I literally had difficulty seeing over the Challenger's roof (hey, I'm only 5'5"). Then when I looked back at my car, the 15 inch wheels looked so tiny compared to the 20s on the Challenger. Beyond that, the Challenger (same applies to the Camaro and a good bit to the Mustang too) just looked bloated and plasticky, compared to the slim/trim steel of the thirdgen. I still love the Challengers, but seeing our thirdgens everyday, I don't think some of us have realized just how different our cars actually are compared to what's built today; maybe that's why the little kids (4-10 years old) always stare hard at our cars at shows, just as we do when we see pre-'73 cars.
But we are getting off topic. The IROC in question, if you want a stripper to build into a monster, then I'd say pick it up since it's pretty clean if you can get the price down a little--as mentioned, a V8/T5/hardtop/stripper can be an attractive car for the power junkies. But its originality is gone, so if you want one to keep stock, keep looking.
Thread Starter
Joined: Dec 2001
Posts: 9,937
Likes: 636
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: What do we think of this IROC?
But we are getting off topic. The IROC in question, if you want a stripper to build into a monster, then I'd say pick it up since it's pretty clean if you can get the price down a little--as mentioned, a V8/T5/hardtop/stripper can be an attractive car for the power junkies. But its originality is gone, so if you want one to keep stock, keep looking.
But....I'd like to duct TPI airboxes to the TB, and maybe if I ever found a factory N10 exhaust laying around......
See how things get started?
Last edited by chazman; Jan 11, 2011 at 12:17 PM.
Joined: Sep 2007
Posts: 273
Likes: 0
From: Wichita, ks
Car: 84 frankenstein Z28
Engine: 350
Transmission: 700R4
Axle/Gears: 3.73
Re: What do we think of this IROC?
Well I'll be, a third gen site that doesn't really care for the looks of a 5th gen.
. I wonder why that is
. I wonder why that is
Senior Member

Joined: Feb 2010
Posts: 695
Likes: 11
From: Oregon
Car: 1991 Z28
Engine: L31-R 350 w/ EBL P4
Transmission: 700R4
Axle/Gears: 2.73
Re: What do we think of this IROC?
I had a similar experience when I was looking at new Challengers when I was home this summer.
I went to a dealer to look at them after hours, and my car was literally a full foot shorter at the roof. I literally had difficulty seeing over the Challenger's roof (hey, I'm only 5'5"). Then when I looked back at my car, the 15 inch wheels looked so tiny compared to the 20s on the Challenger. Beyond that, the Challenger (same applies to the Camaro and a good bit to the Mustang too) just looked bloated and plasticky, compared to the slim/trim steel of the thirdgen. I still love the Challengers, but seeing our thirdgens everyday, I don't think some of us have realized just how different our cars actually are compared to what's built today; maybe that's why the little kids (4-10 years old) always stare hard at our cars at shows, just as we do when we see pre-'73 cars.
But we are getting off topic. The IROC in question, if you want a stripper to build into a monster, then I'd say pick it up since it's pretty clean if you can get the price down a little--as mentioned, a V8/T5/hardtop/stripper can be an attractive car for the power junkies. But its originality is gone, so if you want one to keep stock, keep looking.
I went to a dealer to look at them after hours, and my car was literally a full foot shorter at the roof. I literally had difficulty seeing over the Challenger's roof (hey, I'm only 5'5"). Then when I looked back at my car, the 15 inch wheels looked so tiny compared to the 20s on the Challenger. Beyond that, the Challenger (same applies to the Camaro and a good bit to the Mustang too) just looked bloated and plasticky, compared to the slim/trim steel of the thirdgen. I still love the Challengers, but seeing our thirdgens everyday, I don't think some of us have realized just how different our cars actually are compared to what's built today; maybe that's why the little kids (4-10 years old) always stare hard at our cars at shows, just as we do when we see pre-'73 cars.
But we are getting off topic. The IROC in question, if you want a stripper to build into a monster, then I'd say pick it up since it's pretty clean if you can get the price down a little--as mentioned, a V8/T5/hardtop/stripper can be an attractive car for the power junkies. But its originality is gone, so if you want one to keep stock, keep looking.
It seems that charger, challenger, camaro and mustang have all choose to go down this path. Overall bigger cars with taller body lines, wider bodies, and an overall bigger look. From the wheels to the roof height, everything is just big and overdone. Which is probably why the third gens are the newest cars I truly like. Everything made after these cars are everything I hate, and 4th gens are no exception to that rule.
As for on topic, I'd buy the IROC if I had a lot of money laying around. Its in fairly good shape and wouldn't take a ton of work to fix it up.
2011 Norwood Gathering
ThirdGen Firebird Rep
ThirdGen Firebird Rep
Joined: Jun 2000
Posts: 3,435
Likes: 4
From: Sarasota FL
Car: 99 WS6 / 00 SS / 11 CTS-V / 13 300
Engine: LS1 / LS1 / LSA / 5.7 Hemi
Transmission: 4L60E / T-56 / 6L80E / W5A80
Axle/Gears: 3.23 / 3.42 Auburn / 3.23 / 2.62
Re: What do we think of this IROC?
I decided to fill it up with third gen goodness as soon as possible
I got the Trans Am first, then found the IROC 2 months later. I still remember driving down to see it, saying to my wife "don't worry honey, I won't buy it. I'm just curious to see it because I've never seen a grey IROC in person." When I got goosebumps as the garage door was raised, and I saw it for the first time, I looked at my wife and she said "you're buying this thing, aren't you?"
I'm even considering selling the Z28 for a 5 speed, digitial dash GTA, 5 speed LB9 IROC, or to help finance about half the purchase of a TTA. I love my 4th gen because it does drive better in some ways (and yes, I know you will NEVER agree with that
)...time will tell what I end up doing. Thread Starter
Joined: Dec 2001
Posts: 9,937
Likes: 636
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: What do we think of this IROC?
Wow! That's a big honkin' garage!
Joined: Jul 2000
Posts: 7,386
Likes: 1
From: In a mint Third Gen!
Car: Red 87 IROC-Z28 T-Top
Engine: 5.7 Tuned Port Injection
Transmission: 700R4 Auto
Axle/Gears: BW 9-Bolt 3.27
Re: What do we think of this IROC?
Yeah, when he was looking to buy he probably liked his house for the garage instead of the house!
I'm well aware of your Third Gen enthusiasm JE, and I bet your 4th does ride better in certain ways and is a little faster overall, but turn better than a good condition IROC-Z with equal quality tires, no, I won't agree with that LOL. If you still disagree, put the 4th rims/tires on the Third and see what you think.
Difficult to believe that you might be on your way to buying another one with all the cars you have!
I'm well aware of your Third Gen enthusiasm JE, and I bet your 4th does ride better in certain ways and is a little faster overall, but turn better than a good condition IROC-Z with equal quality tires, no, I won't agree with that LOL. If you still disagree, put the 4th rims/tires on the Third and see what you think.
Difficult to believe that you might be on your way to buying another one with all the cars you have! 2011 Norwood Gathering
ThirdGen Firebird Rep
ThirdGen Firebird Rep
Joined: Jun 2000
Posts: 3,435
Likes: 4
From: Sarasota FL
Car: 99 WS6 / 00 SS / 11 CTS-V / 13 300
Engine: LS1 / LS1 / LSA / 5.7 Hemi
Transmission: 4L60E / T-56 / 6L80E / W5A80
Axle/Gears: 3.23 / 3.42 Auburn / 3.23 / 2.62
Re: What do we think of this IROC?
It is
I normally put the 4 F bodies in there, but in the winter I like to shove the truck in as well. Right now, the IROC is wedged against 1 wall, the Z28 against the opposite, and the TA wedged against the Z28 in the middle. It still leaves a nice pathway to the back door of the garage, which is an access door to my wife's attached horse barn.
I then have the RS and my truck in the front 2 spots. I can't really store 5 cars year round because you can't really get into the back 3, but for the winter while they aren't being used? It works pretty damn good!
IROCZTWENTYGR8,
I actually didn't think the garage was the major benefit it ended up being. At the time, I had the RS and Z28. So long as the home in question had a 2 car garage, I was all set because my wife didn't care if her car went inside.
Now? I don't know how I'd ever move! I could never afford to build this thing...its awesome! When I moved in, it was like a massive storage shed, as there was no ceiling and the soffits were wide open. I've fixed all that, sheetrocked the ceiling and installed a ton of flourescent lights. As soon as I insulate and heat it, I don't ever plan on coming inside again
I normally put the 4 F bodies in there, but in the winter I like to shove the truck in as well. Right now, the IROC is wedged against 1 wall, the Z28 against the opposite, and the TA wedged against the Z28 in the middle. It still leaves a nice pathway to the back door of the garage, which is an access door to my wife's attached horse barn.I then have the RS and my truck in the front 2 spots. I can't really store 5 cars year round because you can't really get into the back 3, but for the winter while they aren't being used? It works pretty damn good!
IROCZTWENTYGR8,
I actually didn't think the garage was the major benefit it ended up being. At the time, I had the RS and Z28. So long as the home in question had a 2 car garage, I was all set because my wife didn't care if her car went inside.
Now? I don't know how I'd ever move! I could never afford to build this thing...its awesome! When I moved in, it was like a massive storage shed, as there was no ceiling and the soffits were wide open. I've fixed all that, sheetrocked the ceiling and installed a ton of flourescent lights. As soon as I insulate and heat it, I don't ever plan on coming inside again
2011 Norwood Gathering
ThirdGen Firebird Rep
ThirdGen Firebird Rep
Joined: Jun 2000
Posts: 3,435
Likes: 4
From: Sarasota FL
Car: 99 WS6 / 00 SS / 11 CTS-V / 13 300
Engine: LS1 / LS1 / LSA / 5.7 Hemi
Transmission: 4L60E / T-56 / 6L80E / W5A80
Axle/Gears: 3.23 / 3.42 Auburn / 3.23 / 2.62
Re: What do we think of this IROC?
Back on topic...so, Charles, what's going on? On the quest still for a 3rd third gen? I say get a 5 speed GTA to go with the IROC.







