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You could get an 85-87 iroc with the LG4 motor.The TPI motor was optional.All Irocs came with factory fog lights and a wonderbar.If you have the RPO code sticker which is usually found in the console glove box that will tell you exactly what you have.I believe the code for Iroc option is B4Z

 

It used to have fuel injection, the EST module is still on the firewall (black box w red weatherpack boot)
If they swapped the front for an RS one they also swapped the front filler panel around the hood latch.

 

https://www.thirdgen.org/forums/hist...-car-iroc.html

JamesC

 

already looked at that. All it says is to check the RPO codes for the 1986 IROC

 

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No B4Z.. no IROC. RPO is the the deal. BTW... who cares if it's not! Great looking ride The engine was an option, some paint in the headlight buckets,fog lights, a new grill(I think) some springs in the suspension and year specific wheels, and no one(99%) will know the difference! I have a 91 RS that cosmetically(sp?)(and mostly mechanically until you open the hood) is a Z28, even the dash Oh from pictures... no

 

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Unless he replaced the front end its a Z28, the dash emblem is easy to swap so you cant be sure that it is original to the car, and im not sure about 86, but my car (1988) has Iroc-Z emblems on the rocker panels and the rear bumper, while our 85 has the Z28 emblems all around

 

87 and 86 had Z28 badges, even on the IROCs. 88 was 1st year for IROC badges on sides and rear.

 

I think in 86 they were in the center console. To definitely find out, you can run the VIN through GM for a fee of course. Some may suggest other ways, but GM will be the definitive answer. Like I said, great looking ride so who cares! So many upgrades to do to your car to make it better than GM ever dreamed!

 

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The difference between IROC'S and RS's was mostly cosmetic and suspension. I don't know too much about your year car (my one car is an 89 5.7 TPI IROC), however IROC's had stiffer springs for handling, bigger sway bars, a wonder bar in the front end, maybe posi in some in the rear. Some had 4 wheel disc, (IDK if they had 4WD in 86) Different gear ratios in the rear. Do a search, or ask some of the Guru's around here, they will give you the info needed!

 

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That doesnt really tell you much as you could get the LG4 motor in any camaro for 1986.....Sport Coupe,Berlinetta,Z28 or Iroc.Look underneath for a wonderbar.Its mounted along the front swaybar.Only Irocs got them.Regular z28`s did not

 

So what's the good news from the DMV check? It says that the car is a Sport Coupe, or a Z28, or an IROC-Z. It did not answer your question. Is the sticker still on the drivers door with the tire size? If it has 16" rims, you have an IROC-Z. In 1986, no car but the IROC-Z had 16" wheels. Look for 245-50/16.

What makes a well respected mechanic an expert on a cars option list? He knows how to mechanically fix whatever comes in the door. I'll bet most mechanics that worked on these cars during the day don't know how to distinguish a Z28 from an IROC-Z or even know what years the IROC-Z was available.

The LG4 was the base engine in the IROC-Z. the LB9 TPI was an option in 86. I would be cautious of this car because I see that the center console has been replaced, so if there are codes in the glove box, they probably aren't for this car. Then we already know the car was repainted, the steering wheel was swapped, the engine was obviously thrown together and overall it doesn't look like it was taken good care of. You might have a lot of work ahead of you and with all of the changes done, does it matter if it's an IROC-Z anymore?

 

Well I figured it meant the base model IROC-Z28 which I'm pretty sure it means it's an IROC. I tried different engine codes which didn't work so I'm pretty sure the VIN check uses the GM production numbers at the end of the VIN. and i found the site from a different thread that verified a few other vehicles for current members.

What makes the guy a good mechanic is the fact that he has worked on cars his entire life, owned his own very successful porsche shop for over 15 years, been in the newspaper and magazines, has owned 8 camaros and probably has a lot more mechanical know how than you. The engine was rebuilt so if that's your idea of "thrown together" and "not taken care of" then maybe someone with deep pockets and better ideas like yourself should take your comments elsewhere. 25 year old cars that have been driven obviously need work and tlc. I've seen much much worse for around the same price I paid for it and as far as I'm concerned the car looks great for it's age. I would rather have a rebuilt engine and parts swapped out that work vs. the stock parts all broken and worthless.

All I wanted to know if my car was an original IROC so you can go diss someone elses car. All cars need some work down the road and that's the fun of owning a 3rd gen camaro anyway

 

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the seats are from a 88 and up car.

 

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Scott.................
You know what they say "You can lead a horse to water BUT"........

Waste of time to answer on this thread!

 

The information given in my thread above is the only way you'll know if it's an IROC or not, or the door tag as mentioned by Scott, but I'm guessing the door tag is long gone/painted over, etc.

You need the RPO codes, that's all there is to it. There's no other way to discern if it's an IROC.

 

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When I say thrown together it's because the engine isn't original, the console isn't form the same year as the car, the seats aren't correct, etc. It looks like the car was put together from a myriad of other cars.

I think you're being childish attacking people that you came here to ask for help. I was simply asking what makes this guy an expert on these cars, not if he was a good mechanic. He is obviously not that great a Camaro expert when it comes to what this car is because it does not appear to be an IROC-Z. Also, I would expect a lifetime mechanic to be more knowledgable than me since I'm not a mechanic!!! That was a childish response on your part. I also based my comment on the car not being taken care of by looking at the interior. It's missing the vents in the dash, there is dirt everywhere, the seatbelt guides are missing, etc. Again, I made a comment based on what you provided and obviously you don't like what you hear.

Running the VIN through any VIN decoder will tell you that the car is a sport coupe, z28 or IROC-Z. That is because the first characters of your vin. The LG4 was available on multiple cars, so the other websites providing the information are probably wrong. The only time a VIN will tell you what these cars are is if that engine was available only in that model. For example, VIN code 8 for a 350 was only available on the IROC-Z from 87-90. That makes the car an IROC-Z if you have an 8 for the engine code. In the case of the LG4, you're not so lucky.

As a noob on TGO, you come to ask questions and advice, take it like a man or go hang out on other websites because we don't need attitudes here. When you decide to grow up, you'll be welcomed back!!