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Old 04-03-2009, 02:38 PM   #1
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Is it 89 IROC-Z or RS?

I am about to buy my first Camaro. The owner says its a RS but when I ran different VIN decoders, two out of three said it was IROC. The VIN is 1G1FP21E3KLXXXXXX but I understand a RS could have been ordered with a
V8. Help.........

Thanks
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Old 04-03-2009, 03:44 PM   #2
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I believe that is a 305 TBI v8 RS model made at the defunct Van Nuys Cali plant.

Try this link.

http://www.autoinsurancetips.com/camaro_vin.htm
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Old 04-03-2009, 04:08 PM   #3
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Brady,

Thanks but when I check with the site below, they say it's a IROC???? \
Also, correct me if I am wrong, this car also has two black and grey stripes running from nose to the end. I thought that was a feature available only in IROC. I know I am not reading something right but just want to make sure.

http://www.is-it-a-lemon.com/free.html
http://www.decodethis.com/
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Old 04-03-2009, 04:54 PM   #4
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Just because it has stripes doesn't mean its an IROC. Those are readily available in the aftermarket. The IROC has to be the most cloned camaro next to the 69Z28. I have never seen an 89 IROC without a TPI motor. I believe by 1989, they were only using TPI in the IROC.
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Old 04-03-2009, 06:48 PM   #5
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Well, I was going to get this front-damaged RS (46,000 original miles) plus a parts '89 IROC/Z for $1,500 but I withdrew my offer. Please let me know if anyone happens to be selling a project IROC/Zs around Chicago. Thanks a bunch.

Last edited by tkhan; 04-03-2009 at 11:17 PM.
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Old 04-04-2009, 07:59 AM   #6
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Quote:
Originally Posted by mike302 View Post
Just because it has stripes doesn't mean its an IROC. Those are readily available in the aftermarket. The IROC has to be the most cloned camaro next to the 69Z28. I have never seen an 89 IROC without a TPI motor. I believe by 1989, they were only using TPI in the IROC.
I had an 89 RS with the 305 TBI motor and added the IROC hood (with the louvers). From the front, it was hard to tell it wasn't a true Z. Very easy to clone for sure.

If you open the hood on the car, see if it has the round air cleaner on top of the motor that says "fuel injection" on it or if it has the silver tuned port runners instead. If its a TPI car, then it should be a Z, otherwise its for sure an RS.
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Old 04-04-2009, 08:47 AM   #7
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Quote:
Originally Posted by mike302 View Post
Just because it has stripes doesn't mean its an IROC. Those are readily available in the aftermarket. The IROC has to be the most cloned camaro next to the 69Z28. I have never seen an 89 IROC without a TPI motor. I believe by 1989, they were only using TPI in the IROC.
1989 Camaro IROC-Z came with the carburated L03 305 v8 standard. TPI motors were optional. TPI was standard on the IROC-Z for 1990
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Old 04-04-2009, 10:07 AM   #8
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What...I'm kinda interested to see an answer?
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Old 04-05-2009, 08:20 AM   #9
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We need more details.

Does the car have the standard square horn button or a round one? Does the dash have a Z28 plate or a Camaro plate? What size rims and tires? The 89 RS could only get 15". The IROC-Z had either 15" or 16", but were the IROC specific wheel. The RS had the 82-87 Z28 rim. Is there a wonderbar on the front suspension? They were IROC-Z specific. The VIN will not decode the RS or IROC-Z option.

If you have access to the car, does it have Z28 on the SPID label? If so, it's an IROC, if not, its and RS.
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Old 04-05-2009, 01:20 PM   #10
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Easy way would to be read the RPO decal in the console (I think that is the location on those cars.)
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Old 04-05-2009, 02:13 PM   #11
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Quote:
Originally Posted by OverAnxious View Post
1989 Camaro IROC-Z came with the carburated L03 305 v8 standard. TPI motors were optional. TPI was standard on the IROC-Z for 1990
Since I don't know for sure I'll take your word for it. Although I have never seen an 89 IROC with that motor. Don't know why someone would pay the extra money for an IROC and put a dog motor in it like that. Thanks for the correction.
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Old 04-05-2009, 02:15 PM   #12
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Quote:
Originally Posted by Brady_SS View Post
I had an 89 RS with the 305 TBI motor and added the IROC hood (with the louvers). From the front, it was hard to tell it wasn't a true Z. Very easy to clone for sure.
I always wanted to do that to my 91 RS. I always loved the IROC hood.
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Old 04-05-2009, 03:18 PM   #13
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Quote:
Originally Posted by mike302 View Post
Since I don't know for sure I'll take your word for it. Although I have never seen an 89 IROC with that motor. Don't know why someone would pay the extra money for an IROC and put a dog motor in it like that. Thanks for the correction.
I pulled the info right from my Camaro White Book, I remember them from the dealership as well
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Old 04-05-2009, 03:38 PM   #14
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Quote:
Originally Posted by OverAnxious View Post
1989 Camaro IROC-Z came with the carburated L03 305 v8 standard. TPI motors were optional. TPI was standard on the IROC-Z for 1990
There were no carburated Camaros in 89, the 305 and 350 were either TBI or TPI ,all fuel injected.

It is easy to clone a TBI base IROC, same motor as an RS, just look for a real 5.7 IROC with an 8 in the VIN for the engine.
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Old 04-05-2009, 04:35 PM   #15
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Quote:
Originally Posted by OverAnxious View Post
1989 Camaro IROC-Z came with the carburated L03 305 v8 standard. TPI motors were optional. TPI was standard on the IROC-Z for 1990
I agree with the above who states that it was more likely a TBI 305, not a carb'd 305...but seeing that TBI is just a carb with an electronic jet in it (plus the metering necessary) it's almost indistinguishable to the untrained eye.
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Old 04-05-2009, 07:52 PM   #16
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The underside of the console lid will have the code "b4z".
Somebody already mentioned the "wonderbar."
it is a bar that goes between the 2 frame rails up near the front of the car.
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Old 04-06-2009, 08:06 AM   #17
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Quote:
Originally Posted by 99b4c View Post
There were no carburated Camaros in 89, the 305 and 350 were either TBI or TPI ,all fuel injected.

It is easy to clone a TBI base IROC, same motor as an RS, just look for a real 5.7 IROC with an 8 in the VIN for the engine.
My mistake, I meant TBI (throttle body) not carburated. I mis typed that. Thanks for pointing it out
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Old 04-10-2009, 07:53 PM   #18
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The SPID label will NOT have RPO B4Z in 1989. All 1988 - 1990 Z28s were IROC-Zs so there was no need for the B4Z code. The SPID label will ONLY have Z28 if the car is truly an IROC-Z. The reason the IROC-Z was available with the TBI LO3 was there was no longer a lesser model like in 85-87 with the Z28. You had 2 model options, RS with V6 or V8 or IROC-Z with base LO3 305, LB9 305 and L98 350.
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Old 04-11-2009, 10:02 PM   #19
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It's gonna be more an issue of the overall quality of the car as to it's value IMO.

This thread is worthless without pics.
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Old 04-15-2009, 10:37 AM   #20
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I havn't seen any 89's without the TPI motor either. It should have the IROC-Z badge on the passenger side of the dash though. It would also have one on the ground effects. Also it would have foglights. If it has original chevy wheels they would have IROC-Z on the hub. Those are easy things to look for. Personally i am not sure i would buy an IROC without tpi, but if i did it would be a good candidate for a modern LS motor!
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Old 04-15-2009, 07:09 PM   #21
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I havn't seen any 89's without the TPI motor either. It should have the IROC-Z badge on the passenger side of the dash though. It would also have one on the ground effects. Also it would have foglights. If it has original chevy wheels they would have IROC-Z on the hub. Those are easy things to look for. Personally i am not sure i would buy an IROC without tpi, but if i did it would be a good candidate for a modern LS motor!
There are alot of base model TBI IROCs in 88,89 and most get converted to carbs, they dont say tuned port under IROC-Z on the rocker emblems or rear bumper. I think any IROC is a good candidate for an LS swap, my 89 L98 IROC was nothing compared to my 99 LS1.
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Old 04-16-2009, 12:22 PM   #22
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Yeah, all torque. the stocker TPIs fall on their face at 5000rpms-just when the LS motors start getting fun.
I did like putting my '87 into 5th gear and letting it drop to idle with my foot of the gas as i drove down the street at 25mph. But at 4800rpms there was nobody home.
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Old 04-18-2009, 06:07 PM   #23
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I saw one in a Camaro magazine a couple years ago. He bought it from some woman who bought it for her teenager, and the dumb punk wanted a rice rocket. It was an original IROC. The guy sprayed it in sunset orange metallic, and put the Iroc decals back on, and put an LS2 in it. It looked like a stock IROC, but damn that was cool! I'm a stock kind of guy, but that sort of thing really interests me, because i love the 3rd gen look. I got tired of mine because of the harsh ride, and not very stiff chassis, but if i could get one and correct those things....

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Old 04-18-2009, 07:13 PM   #24
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I love the stock IROC look also, the best 3rd gen IMO. An 88 or 89 in dark flame red with gold emblems and wheels. I will be cloning an 89 IROC using a RS hardtop and an LS1 and T56 swap. Finding a clean non abused real IROC hardtop cheap to pull apart was not working.
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Old 04-30-2009, 09:42 AM   #25
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The easiest way to tell if it was an actual IROC-Z is to verify the "Z28" rpo code in the console, or the compartment in the trunk. Some cars had it in the trunk, some had it in the glove compartment in the console. If it doesn't say "Z28" then it's a base model/RS.

You never want to assume a car is an IROC-Z / Z28 based on what wheels, decals, badges, and emblems are on it, heck, even the motor. All of that can be swapped out or replaced.
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