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History / Originality Got a question about 1982-1992 Camaro or Firebird history? Have a question about original parts, options, RPO codes, when something was available, or how to document your car? Those questions, answers, and much more!

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Old 08-20-2006, 11:19 PM   #1
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How can i tell if my 85 is a real iroc-z??

i recently aquired an 85 camaro, iroc-z, or so i think, it has all the body clading, the rims, and the motor code comes up as lg4(305) my question is, in the console on the option sheet, is there a set of codes that i can use to tell what i hace exactly? i have all the stuff off that tag.
it goes like this:AR9.A43.A01.A31.A90.BS1.B18.B34.B35.B84.B9K.C60.DO3., D35.D6K.E5Z.E7Z.E9Z.FA1.GA1.GA2.GU4.J50.K64.LG4.MD8.MXO.NA5.N33.QHW. UE8.UM6.U29.U79.VAN.VK3.V73.YE3.YR2.YS2.YT1.YT9.ZJ7.1AY.GKR.7KR. 75L.8PJ.
OK so waht tdo these say about my cars? does anybody know how to decode this and could you please help me determine what i have?? any help would be greatly appreciated
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Old 08-20-2006, 11:45 PM   #2
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Car: 1990 IROC-Z
Engine: 383 HSR
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Go here: Welcome To Camarosource.ca* - Internet's Largest Most Complete Camaro Resource Site

On the left hand side, click on the year of your car.

next page, middle of page, click on decoding. Enter your RPO codes.
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Old 08-20-2006, 11:49 PM   #3
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Car: 91 Z28 24th Anniversary
Engine: L98
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Axle/Gears: Posi 3.23

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Wouldn't it need the Z28 code?
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Old 08-21-2006, 01:11 AM   #4
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There is no B4Z? B4Z is the RPO code for "IROC Sport Equipment Package".
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Old 08-21-2006, 01:42 AM   #5
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SPID Sheet

First make sure that the SPID vin matches the actual VIN of the car, if it doesnt then there really isnt a way to tell. If it does, then according to your SPID sheet, your car is not a real Iroc-z.
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Old 08-21-2006, 05:53 AM   #6
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Car: Met. Silver 85 IROC
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Quote:
Originally Posted by camarosource View Post
There is no B4Z? B4Z is the RPO code for "IROC Sport Equipment Package".
I have an 85 IROC. camarosource is correct, B4Z is the RPO for the package. Couple of quick checks: Wonderbar (only IROC's were equipped with them) and door placard (should note 16 in wheels).

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Old 08-21-2006, 08:04 AM   #7
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whats a SPID sheet??
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Old 08-21-2006, 09:10 AM   #8
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Quote:
Originally Posted by duranged View Post
whats a SPID sheet??
The SPID ("Service Parts IDentification") is the sticker that contains your RPO codes. On the sticker will also mention the VIN of the car.
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Old 08-21-2006, 04:57 PM   #9
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Yep, it needs the B4Z entry to be legit ...
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Old 08-21-2006, 06:38 PM   #10
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Check to see if the VIN in the windshield and other body parts, such as the hood and doors match the VIN on the SPID. The SPID is located in the center console compartment (see pic). If they match, according to your list of RPOs, it is not an IROC-Z. It gets worse. It's not even a Z28. It's a Sport Coupe. The one RPO that gives this away is QHW. These are 14-inch, 70-series tires that were used only on the Sport Coupe....
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Old 08-21-2006, 07:44 PM   #11
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Car: 1990 Camaro IROC-Z Convertible
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Wow it appears you've been had. That really sucks. I'm sorry to hear it man.
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Old 08-21-2006, 07:44 PM
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