Chazman is rolling deep in Irocs. Peel one off!

Hey Chris, small world! :)

I may actually buy more! LOL!

It's an addiction - but those of you considering jumping in should be doing so NOW before all of the low mile or stupid rare stuff gets scooped up.

Since Charlie is sharing....

My 1990 Trans Am 1LE is 1 of only 4 1LE's built by Pontiac in the 1990 model year and was sold through the internal ordering system to John Bennett at GM Chassis Division. John raced it in showroom stock for it's first year then built it for A-Sedan and sold it to Jim Crist of the Toy Store in Florida. Jim campaigned it for several years winning polls, races and setting track records with it at tracks like Daytona, Homestead Miami, Road Atlanta & Sebring. It's currently in it's as raced presentation and is for sale - did I mention it has a factory aluminum hood? :D

My red 1991 Formula is also a 1LE and was ordered three times before being accepted into production by it's original owner. Once accepted he added every single option he could including T-Tops! It is one of 46 1LE Formulas built in the 1991 model year and is one of only 8 built with t-tops. I am the third owner of this car, the 2nd owner started the restoration on it & I completed it - it is also for sale.

My white 1991 Z28 is a 1LE car as well & was ordered new by a female Delco executive in Rochester NY. She decided she wanted something more than a straight race car and added power locks, rear defroster, the cassette stereo and a Leather interior in grey. It's a great car to drive and I enjoy it often. The only other leather equipped 1LE car that I've seen is in Ken Lingenfelter's collection and is red on red - I believe 16 total were built, based on the compnine database.

Lastly, my 1987 Black IROC that I ordered new, sold when it was 2 years old and found again through the help of this board in Janesville WI. I've spent the last two years collecting parts for it and it will be getting a full restoration this year - back to it's original presentation. It's getting treated to an N10 dual cat exhaust, 1LE brakes all around, a JG1 aluminum drive shaft and other assorted parts to improve it's ride & performance. It will never be for sale. :D

All of them are 305/5spd/G92 cars, my 87 IROC being radio delete as well.

These cars were fairly light and if properly optioned pretty fast even with the LB-9

According to the SCCA log book on my 90 TA it's 3180 with driver. :eek:

The fastest bone stock 3rd gen I've ever been in was my friend's '92 B4C, 1LE, RS. It was a 5.7 auto. Just a blisteringly fast car for it's day - or even for today!

He took it to the track for the first time, both for him and the car. A bunch of 4th gen guys were looking at his "RS" as he was about to stage and started laughing, expecting a 17 second 1/4 mile. Ha! First run ever, 13.6 seconds. The 4th gen guys stopped laughing.

Last I heard, that car is in Canada.

Here's a Motorweek review from back in the day. The black IROC-Z is equipped nearly exactly like mine. This is the fastest 1/4 mile time I've seen from all the tests of the time.
https://www.youtube.com/watch?v=aCL-odNmuGA

Very underrated performance potential especially 1987-1992. Most third gens carry the front for a considerable distance at the drags and the 9 bolt is one very tough rear end.

Many will laugh at these cars until they line up against one... Highly cost effective build even today in a day 2 configuration.

That's fast & I would suspect it was tweeked a little before it left the plant although with the N10 & I suspect an aluminum drive shaft - it should do well.

My 87 in it's only trip to a track by one of the former owners achieved a best of 14.57 @ 91.71 MPH with 88k miles showing (it had more on it) and block & heads being replaced under warranty. Temp on the slip says 115! :eek:

Like your friend's B4C/1LE Charlie, my 91 Z28 pulls noticeably harder than the comparably equipped 90 Formula I had last year. You could tell with your eyes closed which car you were driving.

Not knowing the Iroc market what's the market on a flawless original 10k mile black 4 barrel 85 iroc?

LG4 or L69? L69, you're going to pay.

IMO L-69 can be as much as a $10K bump.

Very well could be.

LG-4. The only problem.

4 wheel disc brakes. Lots of options.

Post pics, I'll give you my opinion. Auto or 5 speed?

Auto with OD

Don't have any pics. Black with gold stripes/wheels. T-tops.

Wholesale $11-$14K
Retail $15-$17K

At a dealer $19K+

4 wheel discs also means a posi in '85, which is a nice thing to have. J65 4 wheel discs and posi were bundled together in '85. Also in '85 I believe the 700R4/LG4 came standard with a 3.23 rear end which should give some decent torque multiplication with the LG4's low RPM torque.

BTW, my yellow '85 came with disc/aluminum drums and an open rear end. With the L69 cammed LB9 and 3.42 gears, it's a one wheel smoke show at anything beyond half throttle. Getting a posi for it is on my "to do" list.

If this '85 actually has 10K miles and is mint, sounds like an interesting car, and one you could have some negotiating leeway with.

Current buyers of 3rd gens, at least at the auctions, seem to be blind to almost anything except miles. Low miles regardless of lo po motors seem to do very well.

Great thread!
I have been poking around for a 5.7 Iroc myself. Good info on these cars that people on here have brought to the table.

Question: What was the scoop on the 84 Z28 with the HO motor, 5 spd, and 3.73 gears? On paper this thing was only like 175 HP if I remember correctly. However I had a buddy in high school that had one. All he did was remove the catalytic converters and put an aftermarket muffler on the car and that dang thing was beating 5.0 mustangs somehow.
Maybe his was just an apple out of the crate. I always liked the looks and the handling of the Irocs back then and even today.

Not to highjack the thread but would anyone be interested in a 1992 RS Camaro Heritage Edtion red with black stripes only 2900 original miles? My parents bought the car new in Dec of 91 never in bad weather always in the garage and covered.

The L69 HO was rated at 190 hp in the Camaro. And came out mid year on the 1983.

It was thrown together fairly urgently when the LU5 Crossfire just wasn't able to hang with 5.0 Mustangs, plus the LU5 was having trouble being certified with a stick.

It was a back to basics hotrodded smallblock, based around a bigger cam, decent compression and MUCH more free flowing exhaust which included bigger exhaust manifolds, bigger Y pipe, new free flowing cat, bigger I-pipe. The Q-jet and ignition were recalibrated and a new free flowing dual duct air cleaner housing was added. Initially they were only available with stick and 3.73s. In the blink of an eye, Z/28 and Trans Am had gotten straight line parity with the Mustang GT.



Trivia: The Crossfire intake manifold was based on the same casting as the 1969 Z/28 Crossram 302. GM reuses EVERYTHING! They reduced the runner size to increase velocity, but it really needed a lot more development. I guess the intake worked better with two 600 CFM Holleys at 7200 RPM than it it did with two 275 CFM TBs at 4500 RPM. LOL!

By the time of it's release no further development was in store for the Crossfire as GM had already moved on to develop TPI.


Trivia #2: The HO motor needed a code, since it didn't have one. As a joke, the engineers who developed it said they should call it the L69. Their boss thought that was pretty funny, and approved it!

PM me with details.

Please pm me too w details

Very cool info on the HO's!!
Are those sought after at all? I wonder if those were quicker cars than the ones that came out later with fuel injection. The HO I knew would run with just about anything and most of the time it was in front. The day he took the cats off was the day it was a totally different car. My other buddy had a brand new 86 GT and the HO could never beat it, but it would run with it. After the cats were removed it would be the GT every single time.

Certainly sought after on the '83-'84 cars. The best one would be a 1985 IROC-Z, with the L69.

A handful were made in 1986, but those are unicorns. I don't ever remember seeing one, or at least not more than one.

The L69s wouldn't beat a big cam LB9. My yellow '85's LB9 is essentially an L69 with TPI - cam, exhaust, everything. Even saddled with an automatic trans, the TPI was a tenth or two seconds faster in the 1/4 mile than an L69/T5/3.73. Peanut cam LB9 is a different story.

I had an L69 83 Z28 that I sold last year - with the 3:73 rear gears it was no slouch!

Yes they are the most desirable of the earlier series cars but once the TPI came out they were left behind.

Charlie, 1 of the domestic delivery 86's has been found.

Really!? Tell me more, Chris!

I had an 84 Z28 w/ the HO 305ci, T5 and 3.73s. I always loved the dual snorkel. It did ok, but nothing to write home about. I loved that car otherwise. Sad part is, I still remember the VIN:
1G1AP87GOEN181444. I think it ended up in Mexico after I traded it in on a 93 Z28 in Carlsbad, CA back in 95/96. I'd love to get it back if it's still stateside though. It never showed up again on Carfax...

https://c1.staticflickr.com/6/5450/3...49fb2a45_z.jpg

They are fun cars, I had to pull a car out of the back of the barn and had to move the 91 1LE Formula that was in front of it - so I took it out for a drive. :D

Yup, even three-ish decades later, they are still fun to drive cars. My daily is a six speed LS3, and although fast, I can't quite say it's more fun to drive than my IROCs.

Bigbirdxx,

I have a yellow 87 LB9, 5 speed, no T-tops, 42,000 mile survivor. I've owned it 21 years and always kept it in a climate-controlled garage.

I'm in Lancaster, PA... not far from you. PM me if you're interested.

Troy

Nice!!!!! If I didn't already have a yellow one, I'd be giving you a call!

Nice iroc Troy, pm sent yo

Since I consider this the unofficial IROC-Z thread....


I got another one, but this one found me - just one of those crazy things. Bought it last week from the original owner who lives 5 minutes from me and I never knew it existed. 17,900 miles.


https://scontent.xx.fbcdn.net/v/t1.0...65&oe=59A77630

https://scontent.xx.fbcdn.net/v/t1.0...09&oe=59E72D68

Yes, it's carb'd. Yes, I flipped the air cleaner cover over..... :D

Nice score on the Iroc Vert. Looks really well preserved and loved by original owner.

Wow, nice. Probably the best color combo for the IROC as well as the GTA's.
You don't have any of those do you, lol?