Okay, first of all: I have a 1991 Z-28 with the 350 TPI.

It has AC so it is not a 1LE. I was reading the tech data on the home-page of this site and it mentioned that all 1991 Camaros with the 350 were required to have the G92 option, so I thought that was what all the stuff on my car was, and thought nothing of it. However, as I've been reading through more and more of the posts here, it seems to me that the G92 only applies to the rear axle ratio etc.

My confusion is that my Camaro has 4-wheel discs, anti-roll bars and fancier bushings, stiffer and lower coil springs (it seems, from my comparison to other 3rd gens I've driven), the oil cooler lines. I'm fairly certain all of these are factory because most of the parts have GM stamps on them, and the previous owner said it was unmodified (side story approaching: Guy I bought the car from was a merchant marine, bought the car, put 20k miles on it and got shipped overseas, came back, car didn't run, and it sat in the garage for the rest of it's life until I bought it 2 years ago)

From what I understand, those parts are what denotes a 1LE but my car has AC which a 1LE does not. I can't remember off the top of my head if the drive-shaft or brakes were aluminum, all I know is that pads and rotors were impossible to find.

Anybody have any input, I appreciate anything

 

Hahahaha well, I'm not a restoration expert, but it seems to me that you got all the "good stuff" because you got a Z28! I'm pretty sure the Z28 was more than just a stripe and decal package...

As I said, I'm not a restoration expert, but I spend a lot of time in the wrecking yard and the Z28 and Trans Ams are the ones I get those special parts from when I can. They all seem to have them if they were original Z28 or Trans Am cars.

I've never seen a 1LE in real life before, although I know that guys on here have them.

 

have u looked at the RPO sheet, u should have a G92 code, G92 has aluminum drive-shaft, oil cooler 4disc brakes, posi rear and thicker sway bars but ur RPO sheet will tell u what u have

 

So the G92 code does include All the suspension components, etc?

 

correct!

 

So on an offshoot, what all does the 1LE package include?

 

It makes more sense if you keep it simple.

1LE means the car has dual piston aluminum calipers and larger rotors on the front brakes. That's it.

G92 historically relates to "performance gear ratio", which in laymans terms is just a better gear ratio for performance.

Where things get cloudy, is that the L98 (350 TPI) required certain performance options as standard equipment. Those options were optional on the 305 TPI, and were only included if the car was ordered with the G92 axle. For that reason those options are considered by some to be part of the G92 package. It's a misconception. Those parts aren't part of the G92 package, they're part of a performance package that's triggered by the upgraded axle ratio.

Where 1LE and G92 get blurred is that to trigger the 1LE option, A/C had to be deleted on the order form, and G92 had to be ordered. 1LE doesn't have anything to do with air conditioning, or the bushings, or sway bars, or springs, or any of that. All it is, is an upgraded brake package. The truth is probably that the larger brakes weighed more and required weight reduction to stay in line with CAFE limitations.

Anyway, where that leaves us at the end of the day is that the only real difference between a 1LE L98 car and non 1LE L98 car is the brakes, and the presence of air conditioning. The exhaust, bushings, gas tank, shocks/struts, springs, and all the other mechanical parts that determine performance were exactly the same as the top of the line non-1LE.

 

slightly bigger rotors and calipers, gas tank baffle something (lol basically dsnt starve on sharp turns turns) ac delete + the G92 options

better yet, here's a link: http://www.camarosource.ca/rare_specialty/1le/

 

sounds like a nice car.

 

I just went back and read the Tech Data here for 1991, and also the info on the camarosource link. The Tech Data (for the 1991 Camaro) is so mangled from careless edits, and chopping an 82-92 article into single years, it's to the point where it isn't even congruent. It's almost impossible to understand as it was originally written, and all the typos and poor formatting make it worse then if it wasn't there at all. To understand what it's trying to say you have to go back to about 1989 and start reading there, otherwise you don't know what was different between 89 and 90, or 90 and 91. It doesn't do any good to read about what was changed for 91 if you don't know what it was changed from.

The Camarosource link is better, but has plenty of it's own flaws. Half of what that article states is special equipment, part of the 1LE package was standard on all L98 cars.

Another likely culprit for the misconceptions is the Camaro White Book. It discusses the G92 "package" with and without air conditioning. If not read correctly it makes it sound like the features of G92 were features of G92 + 1LE. The Camarosource article reads almost like a word for word transcription of the White Book, with a few bits of the original Camaro Technical Database, and bits and pieces of other 1LE documents mixed in. Unfortunately several of the facts are wrong.

The original Camaro Technical Database can be found at http://www.f-body.org/tech/tech.htm#ThirdGen I'd suggest starting at about 1989 and read through to the end if you want a better idea then either the Tech Data here, or the mess on Camarosource. Also there's no annoying pop up asking you to join the site.

 

True, and thats mainly because during those years GM did a poor job documenting what exactly they where doing.

Owning a g92 car myself the only difference that i've seen between both for sure are the rotors and calipers and the ac delete, i believe the baffle is also not included on the g92 but i haven't been able to corroborate that as a fact.

there's this one also: http://www.angelfire.com/biz2/1leown...tion/1les.html

and like drew said, theres a lot of info scrambled around that makes it somewhat hard to tell what is FACT.

 

After about 1989 all the fuel injected cars have the same gas tank, regardless if it's a 3.1L V6 or an L98 with 1LE. The "swinging" fuel pick up and special fuel pickup is another of those myths that refuses to die. The 1LE change was to a different filter sock which all the later cars received. You can drive ANY of the later cars down to vapors without stalling.

 

Thanks to everyone, you've all been a great help! That's why I love this site so much!

 

I thought the baffle fuel tank was a legend also. I think someone 10 years ago cut out a 1LE tank and a regular f body tank and they were the same. I saw that picture somewhere but cannot remember where.

i think the aluminum driveshaft is sort of a myth on 1LE versus non 1LE cars. Some have it I think and some don't, could be wrong on that though.

 

Many non-1LE cars were equipped with the JG1 alum drive shaft.

JamesC

 

The only evidence I've ever seen of the special 1LE tank is a picture showing a slightly larger baffle. The baffle in this case is just a plastic tub in the bottom of the tank where the pump and it's sock sit. It's been shown that the part number for the tank 1LE or not was the same as later cars.

The aluminum driveshaft and aluminum spare were to save weight. You see both anytime you're dealing with a heavily loaded car. My personal theory is that the 1LE brakes added weight to the Camaro, so GM only offered the big brakes if other options were deleted. The aluminum spare, aluminum shaft, base interior, fog light and A/C delete were done to balance out the heavy duty brakes, IMHO.