89 IROC-Z Mach 5
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Joined: Nov 2015
Posts: 9
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Car: 89 IROC Convertible
Engine: 383
Axle/Gears: 373 strange axles
89 IROC-Z Mach 5
i just bought this car and had it shipped from the east coast to denver.
It came off the truck yesterday 2/27. I dont know every detail but I have a large folder full of receipts to sort through.
what i do know.
89 Z28 Convertible ~80,000 on base.
1350 miles on build
383 Stroker
2800 stall
3.73 rear strange axles
wilwood calipers
new paint
New Interior
new top
Retrosound BT radio with amp/sub
16" TA Replica wheels
pinstripe by DJ
autometer gauges
and some pics







why call it Mach 5...........i found this/

my other interest
It came off the truck yesterday 2/27. I dont know every detail but I have a large folder full of receipts to sort through.
what i do know.
89 Z28 Convertible ~80,000 on base.
1350 miles on build
383 Stroker
2800 stall
3.73 rear strange axles
wilwood calipers
new paint
New Interior
new top
Retrosound BT radio with amp/sub
16" TA Replica wheels
pinstripe by DJ
autometer gauges
and some pics







why call it Mach 5...........i found this/
my other interest
Last edited by robpp; Feb 29, 2016 at 06:03 PM.
Senior Member

Joined: Apr 2001
Posts: 798
Likes: 3
From: Powder Springs, Georgia, USA
Car: 1992 Black Z28 Hardtop
Axle/Gears: 2002 10 bolt w/3:23
Re: 89 IROC Mach 5
Very nice. As a kid in the '60s I loved Speed Racer but I would not have put the image on my car. Otherwise gorgeous Iroc.
Thread Starter
Junior Member
Joined: Nov 2015
Posts: 9
Likes: 0
Car: 89 IROC Convertible
Engine: 383
Axle/Gears: 373 strange axles
Re: 89 IROC Mach 5

i bought just as you see it.
its not permanent
but I value the opinion and comments.
but i have to admit that about 10 years ago at a garage sale I bought a 10x12 Speed Racer sign its hanging in my garage.
Last edited by robpp; Feb 28, 2016 at 01:14 PM.
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Posts: 3,740
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From: Alamogordo, NM
Car: 88 Formula 350
Engine: 5.7
Transmission: T-56
Axle/Gears: 9" 3.89
Re: 89 IROC Mach 5
If you want to convert you interior color, I would be extremely interested in your red interior. PM me if you are interested.
Supreme Member
Joined: Apr 2006
Posts: 4,482
Likes: 10
From: Northern, CA
Car: 1989 Iroc-Z Camaro
Engine: TBI,5.0
Transmission: Automatic 700R4
Axle/Gears: Eaton Posi,3.42,LPW Ultimate Cover
Re: 89 IROC Mach 5
Beautiful car,
Someone put a lot of work in it.
Many , many times the builder becomes attached to the car. ( like me )
I wonder why they would sell it ?
Someone put a lot of work in it.
Many , many times the builder becomes attached to the car. ( like me )
I wonder why they would sell it ?
Thread Starter
Junior Member
Joined: Nov 2015
Posts: 9
Likes: 0
Car: 89 IROC Convertible
Engine: 383
Axle/Gears: 373 strange axles
Re: 89 IROC Mach 5
I don't know the whole story but he built car for his kid, when ex wife saw no air bag, said get it out of here.
My brother knew the guy and of the car; I was back east for the holidays and bought it.
That's all I know. Obviously more to the story.
My brother knew the guy and of the car; I was back east for the holidays and bought it.
That's all I know. Obviously more to the story.
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Supreme Member
Joined: Apr 2006
Posts: 4,482
Likes: 10
From: Northern, CA
Car: 1989 Iroc-Z Camaro
Engine: TBI,5.0
Transmission: Automatic 700R4
Axle/Gears: Eaton Posi,3.42,LPW Ultimate Cover
Re: 89 IROC-Z Mach 5
Very nice indeed.....
Air Bag !
How about a helmet,roll cage and 5 point harness for the kid to start
I'm glade you bought it, and someone that will take care of it, and knows something about respecting its "power" with out having to learn it the hard way.
Air Bag !
How about a helmet,roll cage and 5 point harness for the kid to start

I'm glade you bought it, and someone that will take care of it, and knows something about respecting its "power" with out having to learn it the hard way.
Last edited by Ron U.S.M.C.; Mar 2, 2016 at 01:19 AM.
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Joined: Apr 2013
Posts: 264
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From: Murrieta California
Car: 1969 RS Z28 X33 Norwood built
Engine: 383 Stroker
Transmission: T10 4 speed
Re: 89 IROC-Z Mach 5
Very nice Car! Not a fan of cowl hoods on third generation camaros but it looks like a very well done build. Im sure the motor wouldn't have fit under the stock hood.
Thread Starter
Junior Member
Joined: Nov 2015
Posts: 9
Likes: 0
Car: 89 IROC Convertible
Engine: 383
Axle/Gears: 373 strange axles
Re: 89 IROC-Z Mach 5
Yeah not a huge fan of cowl either.
First step is to get through Emissions.
I bought a IROC hood and one WISH is to try and make it fit.
First step is to get through Emissions.
I bought a IROC hood and one WISH is to try and make it fit.
Thread Starter
Junior Member
Joined: Nov 2015
Posts: 9
Likes: 0
Car: 89 IROC Convertible
Engine: 383
Axle/Gears: 373 strange axles
Re: 89 IROC-Z Mach 5
I'm a geezer but needed a garage mate, and something to mod, rather than my stock elcamino.
Look forward to learning and sharing.
Thanks
Supreme Member
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Posts: 1,591
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From: WI.
Car: 1987 iroc
Engine: 383 TPIS intake, Dyno Don headers
Transmission: 700R4 w/Pro-built Auto/transgo 2-3
Axle/Gears: 3.27/3.70 borg warner 9 bolt
Re: 89 IROC-Z Mach 5
Welcome to TGO! You have a very nice looking Camaro. I'm curious as to the HP of your 383. Looking at your pics, what would you think about black headlight buckets? Is that a '68 or '69 El camino? Beautiful car also.
Joined: Sep 2004
Posts: 5,906
Likes: 240
From: Chicagoland Suburbs
Car: 1989 Trans Am GTA
Engine: LT1, AFR 195cc, 231/239 LE cam.
Transmission: M28 T56
Axle/Gears: 3.23 10bolt waiting to explode.
Thread Starter
Junior Member
Joined: Nov 2015
Posts: 9
Likes: 0
Car: 89 IROC Convertible
Engine: 383
Axle/Gears: 373 strange axles
Re: 89 IROC-Z Mach 5
No idea on the horsepower. figure about 15% less here at 5500 feet.
For now, happy with the look of the front end.
its a 69 El Camino. 49,xxx original miles. A CO car, completely rust free.
LOL
he must have been lost.........i found him in Newark/
Last edited by robpp; Mar 2, 2016 at 10:55 PM.
Thread Starter
Junior Member
Joined: Nov 2015
Posts: 9
Likes: 0
Car: 89 IROC Convertible
Engine: 383
Axle/Gears: 373 strange axles
Re: 89 IROC-Z Mach 5
what a mess/ EMISSIONS/ nuff said here.
but for this thread, here is the RPO codes from the center console.
not that all of them remain but at least its a starting point.
but for this thread, here is the RPO codes from the center console.
not that all of them remain but at least its a starting point.
Joined: Jun 2003
Posts: 5,028
Likes: 78
From: Desert
Car: 1991 Z28 Vert
Engine: 383 single plane efi
Transmission: T-56
Axle/Gears: 8.8 with 3.73s
Re: 89 IROC-Z Mach 5
Prior owner had some money in that car, that much is certain. I think the story of someone building it for a family member and then selling it because it didn't have an airbag isn't true. There's too much money in that car. What you have now is worth more than a run-of-the-mill Camaro, you should heavily consider having it appraised and insured for that amount.
Thread Starter
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Joined: Nov 2015
Posts: 9
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Car: 89 IROC Convertible
Engine: 383
Axle/Gears: 373 strange axles
Re: 89 IROC-Z Mach 5
It's well insured with Hagerty, thanks for the advice.
As far as the story that's all I know, and irrelevant any more. And yes. Lots of money was spent.
However I may have to sale it, having trouble with emmisions. I was told, it passed in Jersey last year and there is a sticker in the window as such. But it doesn't have one thing including any of the stickers. I can add some SS high flow cats and a few other simple things but if they want AIR stuff plus all kinds of other stuff it needs to go where emissions don't exist like FLA.
Feel free to make a reasonable offer.
As far as the story that's all I know, and irrelevant any more. And yes. Lots of money was spent.
However I may have to sale it, having trouble with emmisions. I was told, it passed in Jersey last year and there is a sticker in the window as such. But it doesn't have one thing including any of the stickers. I can add some SS high flow cats and a few other simple things but if they want AIR stuff plus all kinds of other stuff it needs to go where emissions don't exist like FLA.
Feel free to make a reasonable offer.
Joined: Jun 2003
Posts: 5,028
Likes: 78
From: Desert
Car: 1991 Z28 Vert
Engine: 383 single plane efi
Transmission: T-56
Axle/Gears: 8.8 with 3.73s
Re: 89 IROC-Z Mach 5
It's well insured with Hagerty, thanks for the advice.
As far as the story that's all I know, and irrelevant any more. And yes. Lots of money was spent.
However I may have to sale it, having trouble with emmisions. I was told, it passed in Jersey last year and there is a sticker in the window as such. But it doesn't have one thing including any of the stickers. I can add some SS high flow cats and a few other simple things but if they want AIR stuff plus all kinds of other stuff it needs to go where emissions don't exist like FLA.
Feel free to make a reasonable offer.
As far as the story that's all I know, and irrelevant any more. And yes. Lots of money was spent.
However I may have to sale it, having trouble with emmisions. I was told, it passed in Jersey last year and there is a sticker in the window as such. But it doesn't have one thing including any of the stickers. I can add some SS high flow cats and a few other simple things but if they want AIR stuff plus all kinds of other stuff it needs to go where emissions don't exist like FLA.
Feel free to make a reasonable offer.
Thread Starter
Junior Member
Joined: Nov 2015
Posts: 9
Likes: 0
Car: 89 IROC Convertible
Engine: 383
Axle/Gears: 373 strange axles
Re: 89 IROC-Z Mach 5
Thanks have explored all that.
32 years old here in CO for a classic BUT IF it's newer than 75, still needs E test.
32 years old here in CO for a classic BUT IF it's newer than 75, still needs E test.
Senior Member

Joined: Apr 2001
Posts: 798
Likes: 3
From: Powder Springs, Georgia, USA
Car: 1992 Black Z28 Hardtop
Axle/Gears: 2002 10 bolt w/3:23
Re: 89 IROC-Z Mach 5
That's a bad deal such a nice IROC, here in GA 25 years and you're out of emissions. That is why I am in no big hurry with the LQ9 install in my 92 Z28. By the time I plan to be done with her emissions will not matter.
Joined: Jun 2003
Posts: 5,028
Likes: 78
From: Desert
Car: 1991 Z28 Vert
Engine: 383 single plane efi
Transmission: T-56
Axle/Gears: 8.8 with 3.73s
Re: 89 IROC-Z Mach 5
I would still give the state Headquarters a call and talk with a supervisor about your options. The websites I visited make it sound like you probably would not pass a routine inspection, ie you have no emissions equipment, but you may still have some option they don't readily advertise.
Last edited by Tibo; Mar 5, 2016 at 07:25 PM.
Thread Starter
Junior Member
Joined: Nov 2015
Posts: 9
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Car: 89 IROC Convertible
Engine: 383
Axle/Gears: 373 strange axles
Re: 89 IROC-Z Mach 5
I have an appt with the state Wednesday. They will provide a full report. It's free and it's separate from the ETest place. 3 places told me to proceed this way so here go nothing. I will report back.
Thread Starter
Junior Member
Joined: Nov 2015
Posts: 9
Likes: 0
Car: 89 IROC Convertible
Engine: 383
Axle/Gears: 373 strange axles
Re: 89 IROC-Z Mach 5
ok results of inspection not good.
Observations:
Electronic engine controls and Throttle Body fuel injection have been removed. A 4BBL non feedback carb has been installed. The catalytic converter(s) are not installed. All feedback controls including o2 are not installed.
Comments:
A throttle body fuel injection system and electronic engine controls must be installed and operating to pass visual emissions inspection. This includes a single catalyst for single exhaust or 2 catalysts for dual exhaust, oxygen sensor, secondary pump type air injection system with down and upstream injection system and controls, and an operating engine control system.
with that, offers are being accepted.
FUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU
Observations:
Electronic engine controls and Throttle Body fuel injection have been removed. A 4BBL non feedback carb has been installed. The catalytic converter(s) are not installed. All feedback controls including o2 are not installed.
Comments:
A throttle body fuel injection system and electronic engine controls must be installed and operating to pass visual emissions inspection. This includes a single catalyst for single exhaust or 2 catalysts for dual exhaust, oxygen sensor, secondary pump type air injection system with down and upstream injection system and controls, and an operating engine control system.
with that, offers are being accepted.
FUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU
Thread Starter
Junior Member
Joined: Nov 2015
Posts: 9
Likes: 0
Car: 89 IROC Convertible
Engine: 383
Axle/Gears: 373 strange axles
Re: 89 IROC-Z Mach 5
yeah, i was told.....everything is there but the cats.
and it had a current NJ inspection so I ASSUMED it wouldnt be too much trouble.
my own bad.......not enough DUE DILLIGENCE might cost me.
well now for some really good pictures and a FOR SALE.........just needs to go where they dont care about emissions like FLA.
and it had a current NJ inspection so I ASSUMED it wouldnt be too much trouble.
my own bad.......not enough DUE DILLIGENCE might cost me.
well now for some really good pictures and a FOR SALE.........just needs to go where they dont care about emissions like FLA.
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Joined: Sep 2009
Posts: 1,591
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From: WI.
Car: 1987 iroc
Engine: 383 TPIS intake, Dyno Don headers
Transmission: 700R4 w/Pro-built Auto/transgo 2-3
Axle/Gears: 3.27/3.70 borg warner 9 bolt
Re: 89 IROC-Z Mach 5
It doesn't surprise me with the political climate we have. I'm glad I live in a state where older cars are exempt from emissions testing. I feel bad for you.
Thread Starter
Junior Member
Joined: Nov 2015
Posts: 9
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Car: 89 IROC Convertible
Engine: 383
Axle/Gears: 373 strange axles
Re: 89 IROC-Z Mach 5
yeah its f'ed up how they are sprinkled about.
e-test only done in the 7 counties around denver, the rest of the state is exempt.
then you have some states like FLA that every vehicle is exempt.
makes no sense.
snd they sre on to you if you try and register out of your county...as soon as you get pulled over, you finished.
if all i had to do was pass the sniffer I bet some hi-flow OBDI cats would get me through.
its all the visual check that makes it near impossible.
e-test only done in the 7 counties around denver, the rest of the state is exempt.
then you have some states like FLA that every vehicle is exempt.
makes no sense.
snd they sre on to you if you try and register out of your county...as soon as you get pulled over, you finished.
if all i had to do was pass the sniffer I bet some hi-flow OBDI cats would get me through.
its all the visual check that makes it near impossible.
Joined: Jun 2003
Posts: 5,028
Likes: 78
From: Desert
Car: 1991 Z28 Vert
Engine: 383 single plane efi
Transmission: T-56
Axle/Gears: 8.8 with 3.73s
Re: 89 IROC-Z Mach 5
Throw it up on eBay and the national sites for selling cars. You'll probably make most of it back.
Thread Starter
Junior Member
Joined: Nov 2015
Posts: 9
Likes: 0
Car: 89 IROC Convertible
Engine: 383
Axle/Gears: 373 strange axles
Re: 89 IROC-Z Mach 5
yeah that the plan.
I got to get some real good photos and up on ebay.......
i dont have a ton in it so I should be able to make back most of my money.
I got to get some real good photos and up on ebay.......
i dont have a ton in it so I should be able to make back most of my money.
Supreme Member
Joined: Apr 2006
Posts: 4,482
Likes: 10
From: Northern, CA
Car: 1989 Iroc-Z Camaro
Engine: TBI,5.0
Transmission: Automatic 700R4
Axle/Gears: Eaton Posi,3.42,LPW Ultimate Cover
Re: 89 IROC-Z Mach 5
That's sad........
Nice car
Nice car
Last edited by Ron U.S.M.C.; Mar 9, 2016 at 11:08 PM.
Thread Starter
Junior Member
Joined: Nov 2015
Posts: 9
Likes: 0
Car: 89 IROC Convertible
Engine: 383
Axle/Gears: 373 strange axles
Re: 89 IROC-Z Mach 5
got a photog bud coming tomorrow to get me some good pictures and she is up for sale.
http://vid300.photobucket.com/albums...ps8cucfoo3.mp4
http://vid300.photobucket.com/albums...ps8cucfoo3.mp4
Last edited by robpp; Mar 17, 2016 at 07:22 PM.
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