I have an '86 IROC. But how can I be sure it is an IROC. The RPO sheet is missing from the Glovebox. I cannot locate the DATA Plate like my '82 Z28 has.

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82Z 305 w/comp 270 magnum cam,Edelbrock Performer RPM,Holly 1850-4,serpentine belt drive.TH700R4 w/B&M holeshot 2000 converter,& megashifter.1LE front brakes, 9bolt 3.27 w/1LE rear brakes.Aluminum driveshaft,boxed rear susp.poly everything,IROC swaybar+wonderbar. 70mph@2200rpm ASE Master Tech plus L2
also recently obtained a
'69 chevelle SS396 w/Turbo 400,3.31 posi,11.0 to 1, headers,etc. Latest project car,'86 IROC stock 305TPI hit on left side,but not too bad

 

did you check in the box on the console?

 

where eles can you find the RPOs?? I know mine is an IROC because of the fact I have all the recipts for the car but I can't find the RPO list.

 

This may be reaching a bit. Does the plate on the pass. side of the dash read "Z28 IROC-Z". If it does it's probably an IROC. Also try looking on the underside of the console door for your RPO label.

 

You can also find them in the back of the car inside the lid of the storage area, but in 90-92s.

 

The suspenion and tires sizes.

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89 RS

Looking For:
87 IROC-Z28 350 TPI

 

The "wonderbar" is the best way to check. The fake IROC market isn't so big that people go to those types of extremes to copy them. Most people get the decals, wheels, paint the ground effects and call it a day. Right behind the lower radiator support, there's a bar that goes across the car to connect the two sub-frames. This is the "wonderbar" that only IROCs have. If you have that, I'd say it's a pretty good chance that your IROC is genuine.

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The IROC Homepage
<A HREF="http://www.rit.edu/~jli4307/camaro" TARGET=_blank>
View the restoration of an 85 IROC</A>
"I didn't know a bored out Ford could go so slow" -Shenandoah

 

The RPO codes sheet is not in the console, or anywhere else. I cannot find the metal tag with the data on it that is under the hood on my '82 Z28. It not where I expected it to be on my '86 IROC. I expected it to be on attached to the front radiator support. All that is there are the holes to attach it.
Can I get a replacement factory RPO sheet? From a research service like Pontiac has?

 

Did u look at the suspension??

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89 RS

Looking For:
87 IROC-Z28 350 TPI

 

Look at the tire size info on the driver's side door. You should have 16 in tires. I BELIEVE IROCs had disc brakes at all four corners as well. And as has been mentioned, check for the Wonderbar.

JamesC

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Not all IROC's had the 4 wheel disc brakes. but here are some of the things they HAD to have to be a real IROC when compared to a standard Z28.
1.) Fog Lights
2.) 16" wheels (will say so on the driver's door)This size was also only availible on the IROC's, so if it's there, you can stop here.
3.) wonderbar
4.) "Iroc-z" under the Z28 dash plaque
5.) large front and rear sway bars
6.) Monotone paint and decals(easy to fake though)

If you have all of these, or can tell that they were there at one time, then you most likely have an IROC.

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89 Transam GTA, 350TPI, auto, 3.27 rear, dual cats, gray.
Magnaflow cat-back,
K&N open element,
Best E.T. 14.63@95mph

 

First, I have to assume we're trying to tell the difference between a 1986 Z28 with and without the IROC-Z option. Based on this, I have the following comments:

Yes, but the 1986 Z28 had the fog lamps as optional equipment, so this would be inconclusive in itself.

Very conclusive. This would be the method to tell a genuine IROC-Z.

True, but very easily installed on any third gen. Not conclusive in itself.

Very easily replaced. Not conclusive in itself.

The Z28 had the same sway bar diameters as the Z28 with IROC-Z option. In fact, the spring rates were also the same. The only difference were the shocks/struts.

Easy to repaint. Not conclusive in itself.

Agreed.



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Willie

Supercharged 1987 305 IROC-Z, Daily-Driver, Emissions-Legal.
Former Paxton (6-psig): 12.57 @ 111 mph.
Former Paxton (6-psig) & former 50-hp nitrous: 12.04 @ 114 mph.
Current ATI D1SC (Initially 10-psig): Projecting high 11's.
Future ATI D1SC (15-psig): Gotta catch them pesky 26-psig boosted TTA's!!

http://willie.camaro-firebird.org/

1987 "20th Anniversary Commemorative Edition" Z28 Convertible -- Super Chevy Show Class Winner, 1998.

 

Is their any way to obtain the original RPO codes(not some imitation reproduction crap)?

 

Willie,
I agree that none of those IROC-specific items by themself would say whether or not the car was a true IROC, but if everyting was there and for whatever reason the door sticker was not on the car, most likely it would be a true IROC.

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89 Transam GTA, 350TPI, auto, 3.27 rear, dual cats, gray.
Magnaflow cat-back,
K&N open element,
Best E.T. 14.63@95mph

 

Go to the dealership and ask them to run your VIN thru the computer and print out an RPO code sheet. TaDa!

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Rob P
89RSconvtZZ4TPI
Edelbrock Hi-Flow Intake
SLP Dual Cold Air Intake
1 5/8" Headers
Semi-Siamesed Runners
MSD6AL/AdjFPR/IROC frnt@rear swaybar/wonderbar/steeringbox/alum drvshaft/ Alston SFC/3:23posi disc rear/MAC LCA/H.Adams Panhard Rod/KYB struts/ shocks/
92Z28convt5spd
71Impala convt 402BB
BETTER DRIVING THRU SUPERIOR HORSEPOWER!

 

I'm completely with you. When someone tries to "fake" a car, it's possible that they don't know EVERYTHING about how to do it. Therefore, I decided to list every item you listed separately because this gives more information than all the items lumped together. More knowledge = more power!!

Willie



[This message has been edited by Willie (edited May 18, 2001).]

 

I see what you're saying. I agree.

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89 Transam GTA, 350TPI, auto, 3.27 rear, dual cats, gray.
Magnaflow cat-back,
K&N open element,
Best E.T. 14.63@95mph

 

the car will need to have the original drivers door replaced, due to accident damage
So I will probably not be able to save the important "tire size lable". But I will try.
I was unaware that the dealer could provide a VIN generated RPO print out. Cool!

 

Willie, out of curiosity, have you seen many fake IROCs that involved more than decals and a wheel swap? It seems that IROCs are not nearly desirable enough to make it worth it from a financial standpoint to make a fake. Decals and wheels are easy, but things like suspension, IROC-specific steering box, and other things like that would be much tougher to do. The Wonderbar is easy, but most people have no idea it exists, and even if they did, would they install it?

------------------
The IROC Homepage
<A HREF="http://www.rit.edu/~jli4307/camaro" TARGET=_blank>
View the restoration of an 85 IROC</A>
"I didn't know a bored out Ford could go so slow" -Shenandoah

 

I have only seen 2. Both were superficial clones. The first was originally a V6 car. It had apparently been converted from a wrecked '89 IROC. But all the little details were wrong.ie; the engine bay wiring was all over the place, the fan relays were just hanging inside the fender behind the battery. The young lady who owned the car was completely unaware of this.
The second one was really done quite well. It was an '87 IROC. A really smooth job had been done exept for the fact that the engine had been changed by someone in a hurry (and it looked it). The left side camber was maxed out neg,and the right side was not quite maxed out pos. The entire suspension was IROC. I was sure it was a clone by the small cat and hacked up engine change. I believe the car was originally a TBI car.
I ran across both of these while searching for my current '86 IROC (original) project car. By your replies, I now know that the "tire size tag" is really the only non-RPO way to tell for certain. Thanx,ANDYZ28

 

Rob P,

Can't do that for any car older than 1990. I know...I tried to for my buddy's '83 L69 Z

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Jason E

'89 Camaro RS
Medium Grey Metallic
2.8, A4, T-tops, 91k miles

'97 Z28 w/30th Anniversary package
LT1, M6, t-tops
White with orange stripes, killer system, 42k miles

Speed Kills...Wanna live forever? Drive a Ford.
Long Live #3...

 

Damn! I was hoping it would be easy. Is their
any other "sevice" that can (legitimate)?

 

Try doing a title search thru the DMV. I did one on my 89 RS and my 92. I found I am the 3rd owner of my 92, bought in Philly, sold to a guy in Maryland, then I bought it from the dealership he traded it in for a Vette. My 89 was sold like 8 times in 2 weeks in NC, dealership hopping. Maybe you can find the original owner or someone who knows for sure.
What aboug that Carfax.com thing?

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Rob P
89RSconvtZZ4TPI
Edelbrock Hi-Flow Intake
SLP Dual Cold Air Intake
1 5/8" Headers
Semi-Siamesed Runners
MSD6AL/AdjFPR/IROC frnt@rear swaybar/wonderbar/steeringbox/alum drvshaft/ Alston SFC/3:23posi disc rear/MAC LCA/H.Adams Panhard Rod/KYB struts/ shocks/
92Z28convt5spd
71Impala convt 402BB
BETTER DRIVING THRU SUPERIOR HORSEPOWER!

 

A search through the DMV can be a definite help. We found out that Matt's L69 was owned by the original owner for 10 years, then by the next owner for 7. The idiot who we believe trashed it only had it from July to November of last year.

This car was driven so kindly, the 3rd owner when doing his "custom" black two-tone on the bottom of the car painted over lettering on the back bumper. Wanna know what it said?

"DO NOT TAILGATE" I **** you not We can still make out the outline of the letters through the paint...

Now tell me this car wasn't old man driven!!!