I just decoded my RPO glove box..I have some questions.The car is a 1987 iroc z 305 tpi 5 speed.Its black.I have a code..86A..which is stripe color,accent,two tone red/gunmetal(91)..what is that? stripe around car? I didn't think red/gray stripe was available in 87..The car has some cool things done to it..FE2,GM3,G80,G92,J65,KC4,LB9,MM5,M39,UQ4 to name some.I can't wait to put it back to former glory,will look sharp.

 

Hello matt1970pon!!

I hate to burst your bubble, but 86A is not red/gunmetal on a 1987 IROC, I have 86A on my 1987 IROC, and it's Lt Silver/Black!! 84A on a 1987 IROC is red/gumetal!!

Verified with F Body 82-89 GM parts manual!!

One thing that intrigues me is that, you have the same FE2, GM3, G80, J65, KC4, LB9, MM5, M39 as I do, but I don't have G92????

Strange!!

 

HUm..ok the RPO code decoder I downloaded from this website is wrong then...it lists 86A as red/gunmetal..Thats weird about yours not having the g92 option..its like yours had everything but the 3:45 ratio...why order the other stuff then stop there?

 

Hello matt1970pon!!

RPO codes do change their meaning sometimes, and the "up to date" code 86A today could mean red/gunmetal, but when the code was used in 82-89 (based on my parts manual) it was Lt Silver/Black which matches my car!!

As for the G92, it's funny because, GM3 denotes the 3:45 axle ratio, not G92, G92 was just a marketing RPO that told you/GM that you had the performance axle ratio!! I had the 3:45 axle but, long story made short, I didn't get it when I bought my car in 1988, someone else got that part!!



P.S. I just checked out another site's decoder, and get this: 86A Stripe Color Accent, Two Tone, for a 1993 is Raspberry/Black, and for 1991 is Red/Gunmetal, yet they both have 86A!! Proves my point about the change up, so your 1987 IROC 86A is Lt Silver/Black like mine!!

 

No. It's right, you're just not reading it right. Back when the RPO list was created, one source was a 1991 shop manual. In 1991 86A meant red/gunmetal. That's why it has "(91)" in the definition, to clarify it's year specific. Anytime you see that "(91)" in the definition, if your car isn't a 91, it's probably not correct for your car.

 

Drew,thanks. I was thinking that.So I guess just use my common sense then when it comes to color? I put the silver/black strip on it..I guess that would be correct.

 

So many damn codes...any chance I can send someone my codes and have them decoded for me?? lol

 

Just create a thread on this forum and someone will decode them for you, or do a search for the codes you can't find definitions for.

For an 87 Iroc, I'd match the stripe color to the wheel color. Silver wheels/gray stripe, Gold wheels/gold stripe.

 

Hello MANGLES!!

Just use the decoder on this site!!