One of my tenants brother has an 88 Iroc.I told the guy I bought the buildings from"hey the one tenant has an Iroc" as I love Irocs.He tells me its his brothers.He then calls me back and few mins later and asks me if I know what that car is?I say yeah it's an Iroc.He then says its one of those rare ones with the aluminum driveshafts and it is some special car.I guess he tried buying it for yrs back in the day and the original owner supposedly "knew what it was" and would never sell it. Well he sold it fter 10yrs and this guy bought it.Well now this kid needs money and wants to sell.He thinks its rare since it has a 350 in it!!
How can I tell if the car is a true 1LE?Is there certain codes.I know JG1 is the driveshaft code and it needs a G92 as well I guess but so did 5,000 other ones that year.Anyone can put an aluminum driveshaft in a car.I've been reading up on them all day and it seems odd that this would be one of the 4 they made,but who knows.
Thanks for any help
Derek

 

1LE will be listed on the RPO sticker, inside the center console. If the sticker isn't there, you may be able to get a list of RPO codes from a dealership, using the car's VIN number.

 

1g1fp2187jl1*****
that is the vin if it helps

 

VIN shows nothing about it being a 1LE. Open the center console and see if the RPO sticker is in there and look for the 1LE code.

 

So if there is a sticker underneth the lid and it doesn't say !LE then it isn't one?I haevn't looked at the car up close yet and will be doing it in the next day or so.
Thanks guys
Derek

 

Yes, that's the easiest way as long as the vin on the RPO sticker matches the car's VIN.

Second easiest would be checking for no-AC. The car should have nothing at all indicating that it has or had AC. Besides under the hood, check for the heater-only controls and no AC vents in the dash.

If that appears to be in order, check the front brakes. They should be 12" rotors with aluminum calipers.

After that...I'm not sure. Some had radios, some didn't.

 

There is a 99.99999% chance it is not a 1LE car... What tells me that it is not a 1LE is the 350 engine... From 1988 thru 1990 and half into 1991 model year the 1LE cars were all LB9/M5 cars... The 350 1LE was introduced around April or June of 1990, about the same time as the B4C police package cars got the package...

If the car is in Good condition then yes it is still worth something as the 350 IROC's & Z28's are among the most desirable among the Camaro line...

John

 

If it is 1LE then the front brakes are much bigger. It also should not have A/C, but I agree with the above comment about the 350 too. Hopefully the SSID codes are there and you'll know for sure. Good luck!

 

Thanks again,but didn't I read that some cars had AC?

 

Very Few cars had A/C and the 1LE... Especially the earlier cars would not have had these options... Some of the 1991's & 1992's did however get T-tops...

John

 

That is incorrect. I know because I have one with heater controls that include the A/C position and A/C vents in the dash.

 

can you clarify your statement? you have "one" as in a 1LE car, or "one" as in a 3rd gen car? Any car that was originally a non-A/C car would certainly have the heater only controls.

 

My 91 B4C is a non-1LE car.

 

Yes, I can clarify. I own "one" as in a 1991 LB9 1LE that never had A/C but DOES have the A/C dash control AND vents.

That is incorrect.

Look, I am not here for a pissing match, if you want to learn something just ask.

I am trying to learn something, but can't get any help. Does anyone know if the stock aluminum 15 x 7 Camaro wheel (as pictured) will clear the rear 1LE brake calipers?

 

I think you misinterpereted the mood and intent of my post. I wasn't attacking you at all. However, I do find it hard to believe that a vehicle would leave the factory with a non-ac heater box while it has a diverter box and controls that are meant for an a/c equipped car. If GM somehow did assemble a car that way, than shame on them for mixing and matching parts that they shouldn't. It just seems much more likely that the car had parts swapped at some time during its 18 year life

 

Somebody correct me here if I wrong but didn't GM update the non-A/C setup starting in 1990 to use the same heater box with vacuum operated blend doors and dashboards with the outer vents as the A/C cars had since '82?

I know the early non-A/C systems had a heater box with cable operated blend doors and a dashboard with vents only in the center near the gauges. There were also cable operated "ram vents" in the cowl air plenum that directed air out from under the foot well area. There are a couple of pull ***** in the plastic panel under the steering column for the ram vents.

 

Lots of opinions on these cars LOL. My understanding has always been that all 1LE cars were non-A/C except for the B4C police Camaros. Of course there are always exceptions. From the thirdgen.org 1991 info:
"B4C `Special Service' police package became available to law enforcement agencies only. Cars were RS coupes with Z28 5.0 TPI or 5.7 TPI drivetrains and Z28 suspensions. These cars came equipped with the 16 inch wheels and P245/50-ZR16 tires, engine oil cooler, rear disc brakes, and limited slip axle. Midyear, the 1LE 11.86 inch front brakes and HD calipers became optional for the B4C. This package was the only way to get air conditioning and the HD front brakes. There were 592 1991 B4C Camaros built"

I would "think" that the 15" rims work clear rear disc, but not the front 1LE brakes.

 

Me too, until I tried to bolt on a 15 x 8 steel Corvette style rallye wheel and it was a no go - they hit the calipers.

 

GM didn't have the full gammot of the 1LE figured out in 1988. Two of the original 88 cars did have AC and foglights. They came out with the standards in 89.

Also, there were 1LE cars with the 350 in 89. Not sure about 88 though.

 

I am not an expert on these, but this is news to me...

I think Mark would be good to chime in on this one... All I know is the 1990 bulletin that states that the 1LE was only available with the LB9/M5 and then later around June was then also available with the 350... It could be possible that only applies to the 1991 1LE cars...

some things to consider... From Frankie's Page... www.gtasourcepage.com
1988

1989

1990

feb 1991

June 1991

and 1992



Since the Firebird and the Camaro are sister cars I can only assume that there is no reason to consider that the Camaro was any different.

 

The rumour I heard thas that GM needed to make the 1LE options "production" in order to use them in the racing series in the USA, hence why the option code came out in 1988. The predecessor cars were the Player's cars and the firehawk stuff. 1LE was just the combination of all the parts in a package.

I know the 1988 1LE brakes are unique. Some hand fitting which I assume was more productoin by 1989. The 4 1LE camaros should have been production line cars (test of the production if you will). The Player's cars had all the 1LE brakes shipped to the assembly line and then installed as part of the batch build.

As to whether there was or wasn't AC ... not sure. Only seen the buildsheet for one of the 1988 cars. 305 5 speed no A/C. Heard one of the other 305 5 speeds was raced (hard). Chevy Rumble had an article on it. So that just leaves the last 2 which are rumoured to be 350 cars (but no real evidence).

Keep in mind, the Player's cars were their own package which contained 1LE. They came with many options - and coul dnot be ordered by just anyone. Hence regular Joe had to get a 1LE the way the ordering system allowed for it.

Seems to be very few "real" 1LE's with no options. More cars with exceptions!

Mark.
----------

Great history. Confirmation the fuel pump is just a wide strainer, not the "swinging" pickup many talk about.

Mark.

 

Great history. Confirmation the fuel pump is just a wide strainer, not the "swinging" pickup many talk about.

Mark.

 

Not that you stated was right or wrong, but the tech info has been riddled with mistakes and omissions for years. I wouldnt use it as 100% correct, far from it.

I remember selling fuel pumps there were a whole bunch of different strainers available. One style was not offset like the thirdgen and much wider. Probably the only difference on the 1LE.

 

I replaced the tank in my 1LE car and I was surprised when I looked inside and found no "special" baffling. The tank looked identical to the the one I was replacing it with which listed for a 1991 Z-28. Unless I overlooked it, the insides of the tanks were identical. I still have the original 1LE tank. I don't know what a "swinging pickup" is, but I don't think mine had it. Like I said earlier, my car also has the A/C dash control as well as the A/C vents but the car never had air (C41 is listed on the SPID).

 

My "late-model" 1992 C41 (A/C delete) 1LE does indeed have vacuum-operated blend doors and all the same dashboard vents as an A/C car. There are no footwell ram vents, and nothing in the system appears to be cable-operated.

HOWEVER the dash control panel is NOT the same as on an A/C car. The mode lever has only four positions (Bi-Level, Vent, Heater, and Defrost) and an "off" position on the fan switch itself. An A/C car should have seven positions (Off, Max, Norm, Bi-Level, Vent, Heater, and Defrost) and no "off" position on the fan switch.

 

Based on my C41 car, and the change GM made to vacuum operated controls in the later C41 thirdgens, your vents are correct. However, it is really baffling that you would have a control on your dash that says "Air Conditioning" with Max and Norm modes, when your car does not have factory A/C.

I know GM quality control was questionable sometimes, and occasionally substitute parts were installed when there were shortages, but it seems like a major goof to let that one out of the plant...? This is the kind of assembly error that the vintage Mopar guys are always talking about with their cars.

 

We did a Carfax a couple of years ago on the car and it had changed hands several times. On the inside door jamb, there is a local car dealer's sticker, so I assume it was once sold as a used car by them. I wonder if the dealer would have switched an original non-A/C control so that any perspective buyers wouldn't realize it didn't have A/C. I am not kidding, my brother purchased this car from a guy who wanted to get rid of it...because it didn't have any power options AND he said he was having a hell of a time selling it for the same reason. Go figure.

What's everyone's feeling about posting an SPID - I feel a little apprehensive doing that. I will post a pick of the A/C control unit.

 

Here is the SPID:



Here is the SPID with the HVAC control:



Other odds and ends:





I believe is the factory radio with the above date code

 

There's probably no conclusive way of proving this, but I would bet any amount of money that your HVAC control panel has been replaced at some point in the past. Especially since you don't know the car's history. The more I think about it, I find it highly unbelievable that GM would assemble it that way.

One possible reason for the swap is that the original control unit failed at some point and the part was no longer available. Whoever replaced it used what was available to them and made it work. I would imagine that correct non-A/C control units are probably as rare as hen's teeth. Think about it--the vacuum-operated C41 panel was only used for three years (1990-92) and was in a VERY small percentage of cars.

I wish I could post a picture of mine, but my car is in winter storage offsite. However, if you have your owner's manual, look inside; there are clear pictures of both control panels.

Everything else in your pics looks dead accurate for a 1LE! Do you realize your car came with factory rear window louvers (DE1?) I wonder how many other 1LE's had these?!?

 

Nice pics, I thought this was the car from the original thread and was confused...didn't know why this was a 1990/305 car when he said it was a 1988/350 LOL!

 

That is certainly possible.

Yes, but they are long gone now.

Thank you. The car is a 1991 with a build date of September (I can't remember month for sure, I'd have to look) 1990.

At some point in its life I think this car saw track time. After the car was bought, I noticed a small cut in the carpet behind the seat by the sill plate. I pulled the carpet back and found the remains of where someone had welded a plate to the floor and attached a roll bar. There were either four or six of these plates all together, I can't remember. I know there were two behind the seats and two down by the kick panels but I can't remember if there were any in the back seat / hatch area. Also, the dual cat exhaust was missing replaced by pipe.

 

Here is what I found
90 - 92 Camaro Heater Control C41 - 16089441
90 - 92 Camaro Heater Control C60 - 16089611

John

 

Here is a picture of the car

 

Finally went and looked at the car today.Car is a 88 Iroc, 5.7TPI and has AC and ttops
Checked The center console and didn't see the "1le" anywhere.The guy did say something about it being a one of 2 car but had no idea about anything,just what the guy told him.



Then it gets interesting.He says something about a weird stamp underneth the hood.We lift the hood up and on the passenger side of the car,on what I guess you would call the radiator support or whatever the front part of the frame thing that goes across the front of the car,there is another thing that looks almost like a Vin plate riveted on the car.It was about 1/2"X 3" and had the #'s 02 2638 spaced out like that on it.Anyone have any clue what that is?It was raining so I didn't get into too much searching for the brakes or Aluminum DS.
Thanks again
Derek

 

i hope you are right about that and the rear disks. i'm getting a 9 bolt for my 90 and it has the disk breaks and I thought i was going to have to go to the 16X8 rear wheels so i was putting the change over off for a while. Until i need tires, cause you can get the wheels and tires barely used for less than just the tires new. so if anyone knows i would like to have the feedback.
thanks

 

why do u say the 350 iroc and z28 like their two different cars?? my car is a 1987 5.7 350 iroc-z z28.....

 

Because not every Z28 is an IROC.

 

anyone have any comments on my latest post after looking at the car????

 

Nothing special about the cowl tag, if you do a search on cowl tag you'll see some pictures of said tags on camaro's and Firbirds. I would get a list of RPOs and see what they come up with on it. A big popular swap since it's direct is putting a 3" 4th gen aluminum driveshaft in the cars.

 

Well, being loaded with A/C, T-tops, and especially with no 1LE RPO code apparent on the RPO sticker, there's no way it could be a 1LE in my book. Unless it's a "homemade" 1LE someone put together, which really adds no collector value.

 

might try and get it for a grand anyways.driverside floor rocker and apillar is bad.pass side is great.said the engine was rebuilt and seems like it runs good

 

i bought a 1991 z28 and i dont know if its a b4c or 1le or whatever you call it..how can i tell if its a rare car or not?

 

Probably best to start by searching and reading this forum, starting with the stickies.

https://www.thirdgen.org/forums/hist...re-asking.html