Does anybody know exactly how many LB9 305 TPI w/5-speeds Zs were produced with the G92 package in 88, 89, 90, 91, and 92? Also, did they make them with T-tops? I want to know how hard its gonna be for me to find one!

 

First welcome to TGO now onto your question. The numbers for RPO-G92 are the easy part and the number of LB9 cars is easy as it was IROC/Z28 only.But how many LB9/5 speed cars would be hard as the 5 speed was available in all models.These number are from the "Camaro Whitebook"
1988 G92 - 5,252 LB9 - 12,620
1989 G92 - 1,426 LB9 - 8,925
1990 G92 - 2,710 LB9 - 3,092
1991 G92 - 6,813 LB9 - 9,996
1992 G92 - 3,056 LB9 - 4,002

Also check these links from the Tech Section;
https://www.thirdgen.org/1988-chevy-camaro
https://www.thirdgen.org/1989-chevy-camaro
https://www.thirdgen.org/1990-chevy-camaro
https://www.thirdgen.org/1991-chevy-camaro
https://www.thirdgen.org/1992-chevy-camaro

I'm sure there are others that can shed more light but I hope this helps.

 

Do those G92 numbers include 5.7 G92s though? Or did the 350 come standard with the G92 package? Also did they make 5-speed G92s with T-tops after 89 when they stopped making 5.7s with T-tops?

 

The numbers are for total G92 production as I don't think the info is broken down any further - but I'm not 100% certain on this. It is stated G92 was mandatory when B2L/L98 was ordered.

Now on the T-tops (RPO-CC1) G92 combination the information from the "Camaro Whitebook" doesn't state specifically for '88 or '89. But for '90 -'92 it states that CC1 couldn't be ordered with G92. It further states that CC1 couldn't be ordered in combination with LB9/5 speed. The Whitebook has been known to be off on facts from time to time though.

 

Thanks man. Yea I cant figure out whether those G92 production numbers include the 5.7 G92s or not. However, in '89 it says that there was only 1,426 G92s produced. It also says that there was only 1,428 engine oil coolers (RPO-KC4) ordered. I know that the G92 pkg. required the engine oil cooler, but I also know that the engine oil cooler was standard on B2L/L98 camaros. So I'm beginning to think that those production numbers don't include the L98 cars. However there was still two different rear end gear ratios available for the L98 (2.77 and 3.27) so I'm not sure what to think. G92 also included dual catalytic converters starting in '89 which I think were optional on the 350s in '89, but became standard in '90. This confuses me even more. Please let me know what you think, or if any of the information I have is inaccurate.

 

For the Camaro I beileve the G92 was an upgrade option. For the Trans Am through 1990 it appears to be that way, in 1991 & 1992 I know the T/A should have been standard with the G92 when equipped with the L98. In contrast the Formula & GTA LB9/M5 cars had G92 standard as do the Formula 350's and GTA 350's had the G92 standard.

The Dual cats N10 I am not sure about the Camaro on this one... I suspect it was standard from 1990 & up when you got the G92 option... Scott???

 

How many 1987 Iroc Z28 with G92 LB9 KC4 With a 3:45 rear? I have one. Its black with grey interior with original Bilstein shocks rear disck brakes. But how come these things didnt come with leather and the rear sway bar looks almost bigger than the one on my 2002 WS6 how big is it?

 

24mm for the rear and
34mm for the front.

John

 

Thats pretty big. I think BMR sway bars are only 32mm 21mm solid. Considering how much lighter these cars are compared to my 02 WS6 and these sway bars are bigger. (im pretty sure) i think 30mm 19mm

 

The IROC IIRC from 1985 - 1989 had 34 up front and 24 in the rear, and they had the "Wonderbar". Starting in 1990 and through 1992 they had 36 mm up front.

The WS6 cars in contrast from 1986 - 1992 all had 36mm & 24mm

As for your question...
G92 - 10,533
LB9 - 28,370
KC4 - 23,882 - 12,105 went into the L98 cars therefore 11,777 LB9's would have the Oil cooler as I believe it was NA on the LB8 & LG4, as it would not make sence to have it on them either.

I also want to think that possibly the KC4 may have been paired up with the G92, IE if you got G92 then you automatically got the KC4, by getting the KC4 did not however mean that you got the G92... I would want someone to confirm this but it would make sense. The Oil cooler would have been installed on cars that would have run hotter, with the Performance axel it would only make sence that the engine would have run hotter at speed.

Just thinking out loud

 

I did a little research on this as I have a 92...
607 is the likey number for that year. There are no known published numbers on how many Z28's were produced with the G92(performance axle package) and the LB9 (5.0 liter) TPI V8, but the numbers are few. According to production numbers, 70,007 total camaros were built in 1992, only 6,451 were Z28's.
To arrive at the answer to the question, we must consider the fact that all 3038 1992 camaros built with the L98 (5.7 liter) TPI V8 all included J65 4-wheel disc brakes as part of the build package, and all were automatic transmission. All G92 camaros included J65 in their build. There were 3645 J65's built, but only 3056 G92's. The difference between the two were the 589 B4C's (police package) which all included J65 and included the performance axle rear-end, but for some reason did not include the G92 on their option code build sheets despite having the option included. If you do the math (take the 3645 J65's and subtract the 3038 B2L's), that leaves 607 left that were the LB9 5.0 liter and the 5 speed transmission with the G92 performance axle ratio (which also included dual catalytic converter exhaust, oil cooler and the J65 rear disc brakes).
1992 PUBLISHED PRODUCTION NUMBERS:
Z28 COUPE V8..............................................................5197
Z28 CONVERTIBLE V8...................................................1254
B4C SPECIAL SERVICE RS (EITHER B2L 0R LB9).............589
B2L (L98) 5.7 TPI V8.....................................................3038
LB9 5.0 TPI V8 (5SP MANUAL OR AUTOMATIC TRANS)....4002
J65 4-WHEEL DISC BRAKES...........................................3645
G92 PERFORMANCE AXLE PACKAGE (Z28 ONLY)............3056

 

This is similar to the 87s with the 350. They all came with G92 as mandatory, but G92 is not on the buildsheet or on the windowsticker or SPID. It's not listed because it's part of the overall B2L package in 87. In this case, G92 is part of the B4C package. It's part of what makes the B4C a B4C.

 

My LB9/M5 87 Formula was the same way, no G92 code, But 3.45 B&W gear...

John

 

So then the later year 5.7 Z28's have G92 on the build sheet/SPID, but why then didn't GM put that on the 5.7 B4C's SPID??? It was mandatory option with them both....

 

I think in 87 it was because the options that made up G92 were part of the 350 package and the same holds true for the B4C package. It could only be had with the G92 options. In 1988, the 350 was available without the G92 package, so it became an option that you see if it was ordered. You could not order G92 on an 87 350 car, it was already there. With the B4C, the G92 components were standard and the car was not available without it.

The G92 didn't need to be listed because it was a built in package, not an individual item. That's the only explanation I have and it's probably

 

Yeah, but ALL the 90, 91 and 92 5.7's have the G92...it was a mandatory option, much like the automatic transmission. There seems to be no reasoning as to why GM did or did not put the code on a particular cars SPID...it's on the Z28 5.7, but not on the B4C 5.7. I haven't seen an LB9 B4C's SPID so I wonder if it shows up there?

 

Do you know where I could get info like this but for a '91? I have a '91 Z28, 305TPI/5-Speed with the G80,G92,J65,KC4 but it has manual windows, manual locks, aluminum spare/driveshaft, and no cruise control. I think the only options it has are a/c(I wish it didn't) and rear defrost. I know it's a odd combo, but I'd like some #'s to back that up.

 

I referrenced all of those numbers from the Camaro White Book which is pretty well recognized as being an accurate source of production numbers. I'm at work right now, but I can check the numbers and do some of the math and get back to you...

Rich

 

Its hard to say really...

What is more intriguing is the 1986 was basically the last year for G92 on Firebirds WITHOUT the 1LE package. As discussed before, it turns out the Formula and GTA got the Performance gear for the LB9/M5 & the L98, there was a few cars that got out of the factory not that way but I suspect it may have been a Canadian thing. The Trans Am some years automatically got the G92 with the L98, but not the LB9/M5. The Performance option ended up being the R6P option on the Firebirds, and to get the G92 you had to opt up to the 1LE...

John

 

Just getting back to you on those production numbers for 91 G92's... Well, for 1990 and 1992 the numbers are pretty straight forward in determining how many G92 5 speeds there were. The 92's can be determined from the info I posted above. The 90's are even easier as you just subtract the total G92's (2710) from the B2L's (2415) and you are left with a total of 295 LB9 G92 5 speeds....certainly a very low number!

Now 1991 gets a little weird. First off, the totals don't add up. According to the Camaro White book, there were 12,452 Z28 coupes, 3203 Z28 convertibles and 592 B4C's, ALL of which should have had either the B2L or LB9 TPI V8 in them. But the White book lists only 6080 B2L's and 9996 LB9's. This adds up to 16,076, but the total of Z28's and B4C's is 16,247. Somehow that leaves 171 of these cars without either the B2L or LB9 motor! Further more, all G92's should have the J65 included, but there were only 4938 J65's out of the 6813 G92's listed. This might be possible as it was reported that at one point they were building G92's without the J65...the difference is 1875 units.
At anypoint, if we take the same method of calculating the 90 and 92 cars, we should be able to subtract the B2L's (6080) from the G92's (6813) and we end up with 733 remaining which should be the G92 LB9 5 speeds.

So then, to recap on the production volume for the G92 5 speeds, the following should be accurate:

1990: 295
1991: 733
1992: 607

I think I just made these cars worth a whole lot more, as I don't believe anyone else has determined this before!

 

The US Z28 verts were only available with the LB9/A4 or LB9/M5 (NON G92) From 1990+ The G92 was NA on the T-top cars so I would only assume that the G92 was NA on the Verts, I have not looked it up recently so memory may be bad but I am 99.99999% sure its true.

A little known factoid is that it was possible to get a LO3 in a Z28 or a Trans Am in foreign countries after 1989... There are several examples of those floating around, It may explain the 171 difference...

Another problem is the fact that not all B4C cars got the 1LE Package in 1991, this also creates several issues with trying to figure out some numbers...

I have a number of 31722 V6 cars in 1991 from my source, and that with adds up to the 100,838 that the White book has so I suspect the numbers in the White book for 1991 are accurate...

NOW you may still have another problem with your numbers... Do we know that the 1990-1992 L98 cars had the G92 option on the RPO tag when they were not 1LE's? If it was a part of the package the G92 MAY not actually be included... WHICH would really throw everything off kilter...

John

 

Mine is definately not a 1LE(I wish... ), but I do have G80/G92/J65 in the RPO codes. I had no idea they were so rare, I guess that's why it took me a few years to find one. Does the white book break down in to options(power windows, etc..) also? If only 733 were made, I can't imagine very many had manual windows/locks in a Z28 with the LB9/5 speed transmission.

Thanks for taking the time to break down the numbers as far as you did b4c.

 

Anything for my f-body brothers! Yeah...I have a stripped down 92 g92/5 speed with manual cranks...it only has 14,000 miles. I'm freshening it up as we speak getting it ready to sell, so I hope this helps in verifying what the potential value could be here...

Rich

 

I would be interested to know if production numbers are available for '87 G92's. I have a Yellow 1987 G92 Coupe. It was special ordered with gold stripes/wheels and a black interior. No cruise control, but with power locks, windows, tilt and hatch release. It has the Borg Warner 3:45, J65, KC4 etc. Regards,

Sean
http://www.youtube.com/watch?v=O0uGEITsvNk

 

Love the Yellow...

Unfortuantely all I can tell you is that the G92 would have only been available on the LB9/M5 cars (which you have) and the L98 cars... Since we do not even have a breakdown of the LB9/M5 cars it would be impossible to figure how many were G92 cars...

Not sure how all fo this works BUT was the KC4 Oil cooler Standard equipment on the L98 and the LB9/M5??? AND could you order the Oil cooler seperate from either of those, say on an LB9/A4, or LG4? Anyone Know???

John

 

They do have numbers for G92 in 87, however, not all are listed. The white book lists that there were 10,533. The 1987 L98 cars came standard with all G92 features, but no RPO code. Since G92 specified "performance axle" and the 350 cars only had one axle option of 3.27s, they got G92 as standard. No 2.77 350 cars made in 87 on the Camaro side.

They also list that G92 was only available on the IROC-Z with production of 38,889 IROC-Zs. There were 12,105 L98 cars with G92 standard, so we can now determine that G92 wasn't listed on an L98 car since there were more 350s produced than there were G92s. With that, there were 10,533 305 based IROC-Zs with G92 out of the remaining 26,784 IROC-Zs.

 

Only available on the IROC-Z, was mandated for the L98, but was itemized seperately. It was mandatory for the G92 based LB9. With 23,882 KC4s, that leaves us with 11,777 KC4s on a LB9 car. Now, here's the issue....there is a discrepancy now of 1244 unaccounted for KC4s in 87. It was only available on IROC-Zs with the L98 (12,105) or the LB9 G92s (10,533), but I'm showing 11,777 KC4s for the LB9 (10,533).

 

Scott,
I noticed that with the White book and that is why I posted the question...

Do you know if the LB9/A4 was available with the G92??? I know that in 1986 it was , but I was under the thought that possibly that was the last year it was with the LB9/A4 car...

here are some of my thoughts, let me know if they are wrong, of course they are based upon the patterns from the GTA & Trans Am, its late and I am getting a little tired...

IN 1987...
The L98 was ONLY on the IROC - Got that
The L98 was manditory with the G92 - got that
LB9/M5/IROC came with G92? (Like GTA)
LB9/M5/Z28 (non IROC) did not have G92 (Like Trans Am)
They may have installed the KC4 on the LB9/M5/Z28(NON G92)

I do not think I have ever seen a Z28 LB9/M5 car...

BUT that is a TON of LB9/M5 cars, more than what I would think...

John

 

All 90-92 L98 equiped cars DO have the G92 option on there RPO tag, EXCEPT for the B4c's....

My numbers hold up! Unless someone can reasonably tell me why this conclusion does not, the Third Gen Community needs to embrace this realization that the G92/LB9/M5 cars are indeed rare!

 

Just so everybody knows...

1987 numbers may never add up. 1987 was the first year for option packages and GM didn't know how to count parts. Count them as part of a package or individual?? I can't find the numbers now, but I researched this years ago in regards to the electronic inside rear view mirror. The official count is 901. The problem with this is that the mirror was available on the top package for each model except the sport coupe. I can't believe that out of 137,760 cars produced, only 901 cars total had the top package. Willie and I discussed this years ago and proved option counts to be incorrect in 1987. For anyone interested, do a search for it as it has some good info.

 

Scott,
I actually have another source that appears to be very accurate for production numbers... Some of the numbers that we assume are correct, like the total number of V8's and Automatic Transmissions are dead on... Unfortunately it does not go into some of the more obscure options like the Rear View Mirror, but it has most of the major stuff...


Here is what I have CAMARO from Automotive News
V8 - 77321
V6 - 60439
A4 - 115,109
M5 - 22651
Ltd Slip - 40823
Pwr Windows - 66,194
Pwr Locks - 65023
Pwr Mirrors - 440
Cruise - 78,117
Tilt - 115,243
A/C - 124483
Intermittant Wipers - 90,977
Rear Defog - 86146
AM Radio - 5030
AM/FM - 21752
AM/FM/Cass - 70354
AM/FM/Cass/EQ - 37761
Pwr Seat - 31292
Cloth - 130,280
Leather - 5621
Vinyl - 1859
Rear Disc - 23874
Whitewall - 1793
T-tops - 60,607
Vert - 744

It lines up, the Vert number does not juve with the White book BUT the White book has been shown not to be correct on a lot of things for 1987...

From Wards Automotive Yearbook (Almost all percentages)
LB8 43.9%
LG4 26.7%
V8 TPI 29.4%
A4 83.6
M5 16.4
4 Wh Disk 17.3
Ltd Slip 29.6
A/C 90.4
Pwr Locks 47.2
Pwr Window - 41.8
Pwr Seat - 22.7
AM - 3.7
AM/FM 15.8
AM/FM/Cass 51.1
Bose 6.2
Tilt - 83.7
CC - 56.7
Delay Wiper - 66.0
Rear Defog - 62.5
Remote Mirror - 22.8
T-top - 44.0
Van Nuys - 51,936
Norwood - 85,824
Hatchback - 136,753
Convertible - 1,007

John

One thing that I just noticed is that the White Book (WB) shows for CC1 T-tops only 59,600, but Automotive News (AN) states 606007. IIRC in 1987 the Convertibles got the CC1 RPO... The difference between the WB and the AN is 1007 Units... which is The number of Convertibles according to the WB.. To add to all of this ASC reported only making 955 Camaro Verts

I guess in the end, now that I have gone WAAAY off topic, is that you are correct, we will probably never know... as there are three sources that do not completely agree on some things, but they do on other...

BTW, the thread your talking about is a Stickie

John

 

Scott it's interesting that G92 doesn't show on the build sheet of your '87. But I guess that B2L being there was an auto trigger ,as pointed out, for the other equipment. One would think the build sheet would show all required items - leave it to GM.

It's interesting that pre '87 G92 was just the performance axle option. And afterwards it was a package for most years. My '83 CFI Z28 has it but the ratio is 3.23 - at least it was a step from the standard 2.73