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How many '85 SILVER IROC-Z's were produced?

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Old Jun 5, 2017 | 03:23 PM
  #51  
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From: Lawrence, KS
Car: Met. Silver 85 IROC/Sold
Engine: 350 HO Deluxe (350ci/330hp)
Transmission: T-5 (Non-WC)
Axle/Gears: Limited Slip 3.23's
Re: How many '85 SILVER IROC-Z's were produced?

Originally Posted by t/aws61985
U35 Clock, Quartz
As far as I can determine, only cars with AM radios were equipped with the quart clock (FM radios had digital clocks built in).

JamesC
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Old Jun 5, 2017 | 04:56 PM
  #52  
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From: Chicago
Car: 85-6 TA 85 IROC 82-86 MSE 83 Pace
Engine: Slow ones
Transmission: Noisy ones
Axle/Gears: Weak ones
Re: How many '85 SILVER IROC-Z's were produced?

Originally Posted by PurelyPMD
Great interior - car looks tired though.
Its a Nevada car. Sat outside for quite some time so the paint is really faded. Needs stuff here and there. Will be a good project after I finish my 86 Trans Am.
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Old Sep 27, 2017 | 05:28 PM
  #53  
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Re: How many '85 SILVER IROC-Z's were produced?

Just to clear up some facts on G80 availabilty in late model production.
I ordered my 85 IROC in late march, built in CA. In late April the dealer called and said that the factory called and wanted to know if I still wanted the car as it would not be produced with the G80 option I ordered as there would be no more produced that year due to shortage of the G80 limited slip. However they said they could still give me the GU6 3.42 gears and the J65 rear discs. I told them to continue with the build. I ordered mine with less creature comforts and all performance options.
Black and gold. No special interior was requested so it came with base saddle color vinyl seating. Power window,. elec. rear hatch release, AM/FM no rear speakers, A/C, LB9, 700r4 trans, rear disk and 3.42 gear, no T-Tops. Car was lighter than heavily equipped cars and would run fender to fender with the later 350 iroc cars. Never had a stock mustang out run me, not even close. Currently has 43K on the clock but needs some freshening up from sitting. After all these years finally its worth something...
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Old Sep 27, 2017 | 10:22 PM
  #54  
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Re: How many '85 SILVER IROC-Z's were produced?

Originally Posted by jtruckjmc
Just to clear up some facts on G80 availabilty in late model production.
I ordered my 85 IROC in late march, built in CA. In late April the dealer called and said that the factory called and wanted to know if I still wanted the car as it would not be produced with the G80 option I ordered as there would be no more produced that year due to shortage of the G80 limited slip. However they said they could still give me the GU6 3.42 gears and the J65 rear discs. I told them to continue with the build. I ordered mine with less creature comforts and all performance options.
Black and gold. No special interior was requested so it came with base saddle color vinyl seating. Power window,. elec. rear hatch release, AM/FM no rear speakers, A/C, LB9, 700r4 trans, rear disk and 3.42 gear, no T-Tops. Car was lighter than heavily equipped cars and would run fender to fender with the later 350 iroc cars. Never had a stock mustang out run me, not even close. Currently has 43K on the clock but needs some freshening up from sitting. After all these years finally its worth something...
This is the first confirmation that the factory ran out of the G80 option during April of 1985. This is why the RPO 1C5 "California" IROCs all came with GU6 3.42 performance gears, J65 4 way disks which supposedly weren't available without ordering and having the G80 "posi" option. All 502 of these cars were built in the third week of April 1985 when the G80 option had run out. They did however get the GU6 3.42 Performance gears and J65 4 way disk brakes, but no G80. Thanks for that information. Now I'm wondering if the Norwood built cars ran into the same problem as the west coast cars.
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Old Sep 27, 2017 | 10:32 PM
  #55  
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From: Chicagoland
Car: 1989 IROC-Z. Original owner
Engine: LB9. Dual Cats. Big Cam
Transmission: World Class T-5
Axle/Gears: BW 3.45
Re: How many '85 SILVER IROC-Z's were produced?

Originally Posted by yo soy el warg
This is the first confirmation that the factory ran out of the G80 option during April of 1985. This is why the RPO 1C5 "California" IROCs all came with GU6 3.42 performance gears, J65 4 way disks which supposedly weren't available without ordering and having the G80 "posi" option. All 502 of these cars were built in the third week of April 1985 when the G80 option had run out. They did however get the GU6 3.42 Performance gears and J65 4 way disk brakes, but no G80. Thanks for that information. Now I'm wondering if the Norwood built cars ran into the same problem as the west coast cars.
Interesting, thanks!

My '85 is a May, Van Nuys build with a GU6 and no posi. A ridiculous combo with an L69 cammed LB9. The right rear goes up in smoke at half throttle.
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Old Mar 5, 2020 | 03:10 PM
  #56  
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From: Maine
Car: 1985 IROC
Engine: Chevy 350hp 350 crate
Transmission: TA5
Axle/Gears: 3:73
Re: How many '85 SILVER IROC-Z's were produced?

I have a 1985 IROC Silver Metallic I bought brand new in Nov. 1984. The only mods I have made
are an engine swap from Lg4 to a crate Chevy 350 hp 350 Cu in. and gear swap from
3:23 to 3:73. and dual exhaust. It is 5 spd, T-tops. black and grey interior. I have kept all original parts.
original mileage 72,000 all mods were done only 3,000 miles ago. I felt originally it was grossly underpowered.
stored every year from Nov 1 to April 15. Like new.
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Old Apr 29, 2020 | 09:31 AM
  #57  
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From: Maine
Car: 1985 IROC
Engine: Chevy 350hp 350 crate
Transmission: TA5
Axle/Gears: 3:73
Re: How many '85 SILVER IROC-Z's were produced?

I have this exact car minus the TPI. I have 350hp 350.
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Old Apr 20, 2025 | 04:37 PM
  #58  
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Re: How many '85 SILVER IROC-Z's were produced?

[img alt="I have 1. Not in great shape but tpi automatic car
"]https://cimg2.ibsrv.net/gimg/www.thirdgen.org-vbulletin/1500x2000/img_20250420_160504_ef7296f5b55c0af67048d48b0dac5995ba740574.jpg[/img]
I have 1. Not in great shape but tpi automatic car
Originally Posted by Midwest Muscle
It would be good to know ... I can only personally account for one, the one parked in my storage facility. Have a look >>

http://mohotcar.com/iroc.html

Mike M
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Old Apr 20, 2025 | 04:51 PM
  #59  
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Re: How many '85 SILVER IROC-Z's were produced?

Originally Posted by IROC-MIKE
I have an 85 IROC silver with red stripe L69/ 5 speed /T-top /rear wiper /overhead console/ rear disc/ G92 G80 with tri-color black L/S interior and full power everything. Sold in Feb 85 in Palm Beach Florida. I got all the original documents from the first owner (who has since become a good friend and is also an 85 Camaro encyclopedia in his own right). He bought it on the spot when he saw it in the dealership window while on vacation. It was built in the first 30 days of IROC production Nov 1984.
1985 was the ONLY year silver was available on an IROC but there were other shades of silver on the rest of the lineup and in 82-84 however they were a different paint code and the WACC code is specific to each color. GM did change paint color names from year to year but I'm almost positive the WACC code also changed even IF it was the EXACT color as a previous year. The silver used on 1985 IROCs was EXCLUSIVE to that model year and was only on IROCs. I have an 82 Pace Car and even though its silver its a different color and WACC code than my 85 IROC.
I wanted a silver L69 IROC and was looking for a very specific option combo and because silver is so rare it took me 23 years to find my car starting in the early 90s when I tried to buy my friends car (more on that later).
In the process I found and documented about 12 other silver IROCs with different stripe, interior and engine combos both T-top and coupe.
I also have an EXTENSIVE 3rd Gen Camaro archive from when I worked at a Chevy Dealer (87-93) which I have been studying for OVER 30 years so (IMHO) I hope I can shed a little light on the subject.
There was only ONE silver color available on IROCs in 85 but there was a charcoal grey not available on IROC which may have some confused. Silver was technically LESS than a 1 year color as it was discontinued mid-production 1985 and was marketed as limited availability by Chevrolet.
ALL silver IROCs got argent wheels.
There were TWO decal color combos though: silver with red stripe and silver with charcoal stripe. The most common was red decal.
Because of this, MOST of the silver IROCs will have red interior because red decal cars got the red interior, charcoal decal got either black or grey interior.
Every one I found with red decals has the red interior and only 1 of those had the L/S seats. The other silver cars (either red or charcoal stripe): 2 or 3 had the base high back and all the others were custom cloth in red, black or grey. In my research looking for my silver IROC, I found a note from GM to dealers that the ONLY way to get a silver IROC with red decals AND a black interior was through Central Office Approval which essentially was a COPO order. Youre probably not going to find many of the silver / red decal with ANY style BLACK interior as mine is the only one I found. It was a special order car to be displayed in the showroom of a dealership in a very wealthy area. They wanted to show what you could get so fortunately the salesman spared no expense, checked EVERY option box available on this car and ordered early to be the first to have an IROC on display. Oddly enough it has metric gauges but was ordered by and delivered to the same dealer in Florida.
Side note: Several years ago I posted a thread looking for a lower VIN IROC and haven't found one but the owner of the first documented IROC shipped to Canada contacted me and he was within 100 of mine so they were probably built the same day which may explain the metric cluster in my car. That car was almost identical in every option but was black with gold decals.
As for engine combos: from what I documented, TPI was the most common IROC motor probably because autos are easier to sell to the masses. When you think IROC you automatically assume TPI. That's pretty much with almost any color 85 & 86 IROC since TPI was just introduced dealers wanted them on the floor to show. 2nd most common was LG4 / auto, then LG4 / 5 speed which was least expensive. Many IROC buyers thought you had to get a 5 speed if you really wanted to "drive" a sports car and it was easier and cheaper to make more power in an LG4 than to do an auto to manual swap with a TPI and dealers didn't stock many L69. So, the rarest is the L69 and I only found 1 silver L69 with auto. I know of only 1 other silver L69 5 speed which belonged to my best friends cousin. He bought brand new in 85. It was stolen and the shell was found stripped in the early 90s. It was the first IROC I ever saw: he showed it to me just hours after he bought it and that car started my decades long quest for a silver L69. His car was red decal / red custom cloth / T-top. Silver was hard to find even working at a dealership back in the day so until the internet was invented it was REALLY hard to find one using the classified newspaper ads. You guys don't know how easy you have to locate the 5 or 6 you did and I wouldn't be surprised if they are the same ones I documented.
I'm sure there are many more silver IROCs out there but I'm only speaking about what cars I personally have found and have documented while actively looking for a silver IROC for over 20 years.
I'm specifically talking about 1985 but most of the L69 cars for all years (83-86) were ordered by a buyer and not for dealer stock because it was the most expensive option until TPI and more expensive to insure than all others. The L69 engine was only offered for the first few months of 85 production and was marketed as limited availability in all the dealer info. The dealer I worked at ordered the next model year in late August and production began in Sept. The sliver was a limited run color so to get the L69 in silver you had to order during a very short window Aug- Oct 84. Yellow wasn't available for early order so the L69 overlapped that color around Dec and ran until Feb from what I can tell.
As the owner of one of these I'd really love to know how many were built / survive. I really wanted to buy my friends because it was the first one I laid eyes on but since that car was lost forever I set out to find the ultimate silver IROC. I'll let you guys debate if I succeeded, but don't ask because its NOT for sale.
I too have found many errors with the accuracy of the White Book (not knocking the authors because its still worth owning a copy) but even within GMs own Media Archives so don't rely on them 100% if youre going to spend good money buying a car. Find someone who knows them and pay to get an evaluation so you don't get burned. But I think the rarest will be a silver L69 with ANY option combination. If you have one let me know because I'd like to document it with the others. If I can help you with specific Qs feel free to PM me.

I have a 85 silver tpi automatic car
I have a 85 silver tpi automatic car
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Old Apr 20, 2025 | 04:54 PM
  #60  
berger's Avatar
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Re: How many '85 SILVER IROC-Z's were produced?

Originally Posted by IROC-MIKE
I have an 85 IROC silver with red stripe L69/ 5 speed /T-top /rear wiper /overhead console/ rear disc/ G92 G80 with tri-color black L/S interior and full power everything. Sold in Feb 85 in Palm Beach Florida. I got all the original documents from the first owner (who has since become a good friend and is also an 85 Camaro encyclopedia in his own right). He bought it on the spot when he saw it in the dealership window while on vacation. It was built in the first 30 days of IROC production Nov 1984.
1985 was the ONLY year silver was available on an IROC but there were other shades of silver on the rest of the lineup and in 82-84 however they were a different paint code and the WACC code is specific to each color. GM did change paint color names from year to year but I'm almost positive the WACC code also changed even IF it was the EXACT color as a previous year. The silver used on 1985 IROCs was EXCLUSIVE to that model year and was only on IROCs. I have an 82 Pace Car and even though its silver its a different color and WACC code than my 85 IROC.
I wanted a silver L69 IROC and was looking for a very specific option combo and because silver is so rare it took me 23 years to find my car starting in the early 90s when I tried to buy my friends car (more on that later).
In the process I found and documented about 12 other silver IROCs with different stripe, interior and engine combos both T-top and coupe.
I also have an EXTENSIVE 3rd Gen Camaro archive from when I worked at a Chevy Dealer (87-93) which I have been studying for OVER 30 years so (IMHO) I hope I can shed a little light on the subject.
There was only ONE silver color available on IROCs in 85 but there was a charcoal grey not available on IROC which may have some confused. Silver was technically LESS than a 1 year color as it was discontinued mid-production 1985 and was marketed as limited availability by Chevrolet.
ALL silver IROCs got argent wheels.
There were TWO decal color combos though: silver with red stripe and silver with charcoal stripe. The most common was red decal.
Because of this, MOST of the silver IROCs will have red interior because red decal cars got the red interior, charcoal decal got either black or grey interior.
Every one I found with red decals has the red interior and only 1 of those had the L/S seats. The other silver cars (either red or charcoal stripe): 2 or 3 had the base high back and all the others were custom cloth in red, black or grey. In my research looking for my silver IROC, I found a note from GM to dealers that the ONLY way to get a silver IROC with red decals AND a black interior was through Central Office Approval which essentially was a COPO order. Youre probably not going to find many of the silver / red decal with ANY style BLACK interior as mine is the only one I found. It was a special order car to be displayed in the showroom of a dealership in a very wealthy area. They wanted to show what you could get so fortunately the salesman spared no expense, checked EVERY option box available on this car and ordered early to be the first to have an IROC on display. Oddly enough it has metric gauges but was ordered by and delivered to the same dealer in Florida.
Side note: Several years ago I posted a thread looking for a lower VIN IROC and haven't found one but the owner of the first documented IROC shipped to Canada contacted me and he was within 100 of mine so they were probably built the same day which may explain the metric cluster in my car. That car was almost identical in every option but was black with gold decals.
As for engine combos: from what I documented, TPI was the most common IROC motor probably because autos are easier to sell to the masses. When you think IROC you automatically assume TPI. That's pretty much with almost any color 85 & 86 IROC since TPI was just introduced dealers wanted them on the floor to show. 2nd most common was LG4 / auto, then LG4 / 5 speed which was least expensive. Many IROC buyers thought you had to get a 5 speed if you really wanted to "drive" a sports car and it was easier and cheaper to make more power in an LG4 than to do an auto to manual swap with a TPI and dealers didn't stock many L69. So, the rarest is the L69 and I only found 1 silver L69 with auto. I know of only 1 other silver L69 5 speed which belonged to my best friends cousin. He bought brand new in 85. It was stolen and the shell was found stripped in the early 90s. It was the first IROC I ever saw: he showed it to me just hours after he bought it and that car started my decades long quest for a silver L69. His car was red decal / red custom cloth / T-top. Silver was hard to find even working at a dealership back in the day so until the internet was invented it was REALLY hard to find one using the classified newspaper ads. You guys don't know how easy you have to locate the 5 or 6 you did and I wouldn't be surprised if they are the same ones I documented.
I'm sure there are many more silver IROCs out there but I'm only speaking about what cars I personally have found and have documented while actively looking for a silver IROC for over 20 years.
I'm specifically talking about 1985 but most of the L69 cars for all years (83-86) were ordered by a buyer and not for dealer stock because it was the most expensive option until TPI and more expensive to insure than all others. The L69 engine was only offered for the first few months of 85 production and was marketed as limited availability in all the dealer info. The dealer I worked at ordered the next model year in late August and production began in Sept. The sliver was a limited run color so to get the L69 in silver you had to order during a very short window Aug- Oct 84. Yellow wasn't available for early order so the L69 overlapped that color around Dec and ran until Feb from what I can tell.
As the owner of one of these I'd really love to know how many were built / survive. I really wanted to buy my friends because it was the first one I laid eyes on but since that car was lost forever I set out to find the ultimate silver IROC. I'll let you guys debate if I succeeded, but don't ask because its NOT for sale.
I too have found many errors with the accuracy of the White Book (not knocking the authors because its still worth owning a copy) but even within GMs own Media Archives so don't rely on them 100% if youre going to spend good money buying a car. Find someone who knows them and pay to get an evaluation so you don't get burned. But I think the rarest will be a silver L69 with ANY option combination. If you have one let me know because I'd like to document it with the others. If I can help you with specific Qs feel free to PM me.
85 silver tpi automatic
85 silver tpi automatic

Reply
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