Axls88GTA

I have an 88 GTA with the L98. I dont have the 1LE option but I do have some of the items that came with the option including alum. drivshaft smaller aluminum spare tire and dual cats.Why does my car have these but not the option code?

RB83L69

The aluminum driveshaft and dual cats are part of RPO G92. The spare tire is another option (might or might not have been part of G92 in that particular year & model, I don't know) RPO N10 IIRC.

1LE may have automatically triggered, or even included, G92. Again, I'm not sure. But however that may be, you have G92, not "part of" 1LE.

Axls88GTA

Thanks for the reply but I also dont have that option code. The following codes are the only ones that are on the window sticker.

B20
C67
U52
Y84
81U

RB83L69

Might not be on the window sticker; but they'll be on the build sheet.

okfoz

CHeck your RPO sheet in the center console. Or get a free dealer invoice.

As for the Dual cats that was started in 1989, and was only on the Formula from the factory on the firebird line. (according to a media kit I have)

The Dual cats were not availble even on the 1LE package in 1988. Chances are someone had converted your car. Which is more than likely.

You can purchase the Alum driveshaft from SUmmit for example.

John

TTOP350

iTrader: (8)

If you have the spoked spare its not a 89 and up 1LE spare.. those are painted black and look very close to a regular spare but its 25 lbs lighter

I have both.. I need to post some pics of the differences

okfoz

TOny,
Quickie question fer ya...

Does your car have the dual cats option.. I know its no longer stock, but did it come from the factory with Dual cats?

John

TTOP350

iTrader: (8)

Yes it had the N10 option (still have it in the Garage along with my orginal cat back ) , shes got all the performance stuff but 1LE

okfoz

I think that is the only way you could get a Formula 350 in 1989... With the Dual Cats & all... Just checking.

John

TTOP350

iTrader: (8)

I'll check when I get home

kaptinkafeen

iTrader: (2)

I'm confused a bit now, I thought that G92 is what started the 1LE build, but did not include the aluminum drive shaft, baffled gas tank, special brakes etc.. I thought that the G92 RPO triggered the 1LE options, (on a Z28 for example), including dual cats - high output 305cid and then only if A/C was deleted, did the car get outfitted with the 1LE components.
Is RPO G92 different for the Pontiacs?
Thanks,
-Andrew

DJP87Z28

One sure way to tell the 1LE option, if you have the big 12" rotors & dual piston calipers Brakes up front. If not, all you have is a car with add on RPO's.

1991z281le

We have 3 1991 Z28 1LEs with the spoked aluminum spare and 2 with the solid black aluminum spare. As we've seen, the spoked spare was phased out sometime during mid model year 1991 as all the spoked spare cars were build in the first half of 1991 production.

kaptinkafeen

iTrader: (2)

Sorry guys, but I'm still lost in regards to the RPO G92.
On a Pontiac, what did G92 do to the car - were any of the 1LE components added?, or like a Z28 - did G92 without A/C trigger the 1LE build? After reading some of the first posts in this thread, it sounds as if components like the aluminum drive shaft could be on a car that only had RPO G92? (I do know that there are exceptions to all the rules but???)
After reading a pile of books, the way I understand G92 is that this option gaved the buyer a performanced axle ratio, and was only orderable with the LB9 and 5 speed or B2L with auto trans. The car was outfitted with the dual cat exhaust system, (RPO N10) 4 wheel discs (RPO J65) and engine oil cooler (RPO KC4) - no 1LE parts were added unless A/C was deleted. No alum drive shaft, dual piston brakes, gas tank, light weight spare etc..
Can some one fill me in please?
-Andrew

DJP87Z28

Yes, 1LE was a stand alone option for a stripped down road race car.

IROCZTWENTYGR8

iTrader: (1)

https://www.thirdgen.org/newdesign/tech/techdb.shtml

Please use and read our Tech Data on the main page.

kaptinkafeen

iTrader: (2)

Thanks guys,
-Andrew

TTOP350

iTrader: (8)

WOW this is very confusing but interesting..
This will throw a wrench in both of our thoughts on this ..

we have 2 89 TTAs in the shop and both have the painted aluminum spare... ?!?!?!?!
I haven't ever checked to see if the spoked wheel really fits over the front 1LE brakes.. I might just have to try it some time...

I wonder if they had 2 suppliers and just threw in whatever they had in the bin???

84 1LE

iTrader: (9)

YES,please do............Also from what ive read over the years about 1LEs.If you ordered the G92 package it would trigger the 1LE option with it,BUT if you also ordered A/C & or foglamps.GM would delete the Bigger front brakes,but leave the Rr disc in place.Since they are part of the G92 package.I guess GM figured if you wanted A/C & or foglamps.You werent going racing.Since the A/C system adds weight & with the foglamps reduces airflow the radiator.Two things you wouldnt want if your running hard.Most of the remaing 1LE package was also left on the car(oilcooler,alum dr.shaft,higher durameter rubber bushings,dual cats,baffled tanks became standard in 1990 ive read/heard.Almost all other options were available though with 1LE.None of this of course applies to the B4C package.

kaptinkafeen

iTrader: (2)

I was woundering where you read/heard this info -
- remaing 1LE package was also left on the car(oilcooler,alum dr.shaft,higher durameter rubber bushings,dual cats,baffled tanks became standard in 1990

It may have happened in the odd/exceptional case- but this was not the regular case - i have seen many a 91 - 92 Z28 with G92 and 4 wheel discs but no aluminum drive shaft baffled tank etc...
I keep hearing things like what has been quoted, and want to know where this info is comming from - Can you pass this on?
Thanks
-Andrew

84 1LE

iTrader: (9)

I Know information can sometimes be incorrect.Ive read many articles on this,but the last book i remember reading about this was the camaro "white book".At the very least The BIG front brakes were deleted from the 1LE package if you ordered A/C &/or foglamps.Perhaps leaving most all other 1LE options intact?

kaptinkafeen

iTrader: (2)

I can see your point -
I have methodically read the "white book" - personally, I think that as a general reference it's a great source, but after this - ... In some cases the info presented is a bit vague, inaccurate etc...
In my opinion, I can't see why GM would leave any of the 1LE components on the car if A/C or fogs were added to a G92 optioned car. Here are my reasons:
1. G92 had to be ordered first - 1LE came next - so the extra parts would not likely be installed, and, only after A/C was deleted would the build switch to 1LE specs.
2. The 1LE parts cost more $$ than the standard Z parts - (mistakes could have been made, special orders were possible, etc, etc.. but - ) so GM wouldn't be adding these upgrades, I don't even think they would substitute them if the regular parts were out, or delayed.
Just my 2cents....
-Andrew

TTOP350

iTrader: (8)

If I remember right.. didn't the Z have the 1LE option on the order form..

The birds where harder to order, you had to have the G92 C40-1?? (AC delet) R6P and something else I have a sheet at home with the correct way to order it...

okfoz

I think there is a person on the boards who claims to have the 1LE RPO, he got A/C and power everything. It was on a 91 or 92 Formula if I remember right, I belive he even posted his RPO sheet.

So this leaves me with a delemma, if you delete everything off the car, and then put the G92, and then the 1LE options pop up, why could you not start adding options back on top of it. I wonder if it would work that way.

I dont know, just trying to remember.

and BTW, the Camaro White book may be a great resource, unfortunately I think it may be worthless, because of the innacruacies, how could I trust it? I wish there was an accurate version for firebirds.

John

kaptinkafeen

iTrader: (2)

I can remember reading an old Muscle Car review in which there was an article/test of a yellow 91 or 92 formula - I can't remember which year it was - this was one of these "strangely" optioned cars that went against the normal ordering practise. I will go diggin this eve, and see if I can post the date and issue of the mag. That said - the car that you have mentioned may indeed really exist - Things like this happened - the car would be an anomoly, if documentation exists to verify the claims (We all know how many 'extra' '69 Z28 now exist, LS6 Chevelles , Shelby's etc exist.... I could go on and on...) and in my opinion would be worth a bit extra... RPO tags are easily duplicated, and we are now at a point in the hobby where the buyer has to be diligent ( it's sad if you ask me that it has come to this).
On the topic of reading material - Peter Sessler put together a 'not bad book' called Firebird Red Book Motorbooks International 1992. It covers all F-body ponchos up to '91 - missing a lot of info out of date now - I can't seem to remeber if a new volume has been printed, but like the Camaro white book it's a start. Even the Standard Catalouge of Firebird and Camaro are missing a lot of info ... nice pictures though
-Andrew

TTOP350

iTrader: (8)

I have the road test of that 1LE formula with A/C kinda neet

Dead83

Can somebody tell me what size of spare came on the 1LE equipped cars? I ask because I plan to upgrade my front brakes to the Baer Sport kit (looks like a clone of the 1LE set up with a 12" rotor and two piston pbr caliper. My car came from the factory with a 125 70 15 spare (don't know the off set of the wheel)- anychance this would fit or will I have to search for an oddball spare? I plan to put a lot of highway miles on my car when it's finished and I'll need a spare.

Thanks,

Trevor