how many 89 verts were made???
Thread Starter
Junior Member
Joined: Jan 2011
Posts: 89
Likes: 0
From: Arizona
Car: 1989 IrocZ Convertable
Engine: 350 5.7
Transmission: AUTO 4 SPD, THM 700 R4
Axle/Gears: AXLE REAR, 2.73 RATIO
how many 89 verts were made???
does anyone know how many 1989 irocz convertibles were made? i would love to know. also based on my setup listed, was there a specif number made with that setup, or is that pretty much the standard for 89 vert?
thanks.
thanks.
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iTrader: (2)
Joined: Mar 2004
Posts: 250
Likes: 0
From: NE Pa
Car: 1989 Iroc-Z Convertible
Engine: 6.0 LQ4 LSX
Transmission: T56
Axle/Gears: Moser 12 bolt w/4.11s
Re: how many 89 verts were made???
From my understanding and what I have heard from other people, they are not very common.
Member

Joined: Mar 2010
Posts: 399
Likes: 1
From: Toronto, Ontario
Car: 88 (SOLD) & 90 Iroc convertibles
Engine: 5.0 TPI, 5.0 TPI
Transmission: 5 speed & auto
Axle/Gears: 3.08 & 2.73
Re: how many 89 verts were made???
I have an 88 vert Iroc 5 speed ,on comp nine vin decoder it shows Rpo code MM5 as 1489 cars and its listed as 5 speed provisions as well as M39 710 cars with Borg Warner now I dont know if this applies to the convertibles or all T top cars CC1 which I have listed since t top cars were converted to factory convertibles such as what I have.
To me these numbers seem high for 88 convertible 5 speed Irocs,
Another interesting thing about my 5 speed Iroc it was built in 87 making it an early Iroc convertible which was owned by GM Canada for 1 year before going to a Toronto dealership.
To me these numbers seem high for 88 convertible 5 speed Irocs,
Another interesting thing about my 5 speed Iroc it was built in 87 making it an early Iroc convertible which was owned by GM Canada for 1 year before going to a Toronto dealership.
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Supreme Member
Joined: Jul 2006
Posts: 1,672
Likes: 4
From: Killam, AB
Car: 1989 IrocZ Convertible
Engine: 305 TPI
Transmission: T5 - 5 Speed Standard
Axle/Gears: 3.08
Re: how many 89 verts were made???
Just a piece of general info . . . almost all vehicle manufactures start the a new model at some point in the previous year. My '89 was made in Sept '88 for example.
Regarding the 5spd . . . as stated, there are no numbers for specific option combos. At best, we can come up with a generality. Almost all 3rd gen Camaro years that offered the 5spd / auto choice, the ratio was roughly 20% / 80% for all model types. In '89, it was almost exactly that. So a crude guesstimate might be, of the 3940 IrocZ verts produced for the '89 model year, ~788 had the 5spd.
Again, this is only playing with numbers in order to only give us a rough idea.
Regarding the 5spd . . . as stated, there are no numbers for specific option combos. At best, we can come up with a generality. Almost all 3rd gen Camaro years that offered the 5spd / auto choice, the ratio was roughly 20% / 80% for all model types. In '89, it was almost exactly that. So a crude guesstimate might be, of the 3940 IrocZ verts produced for the '89 model year, ~788 had the 5spd.
Again, this is only playing with numbers in order to only give us a rough idea.
Junior Member
Joined: Aug 2011
Posts: 1
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Car: 1989 iroc-z convertible
Engine: 305 tpi
Transmission: 5 speed
Re: how many 89 verts were made???
i have a 1989 iroc-z convertible 305tpi 5 speed. does anyone know how many were made. i know they are not very common
Thread Starter
Junior Member
Joined: Jan 2011
Posts: 89
Likes: 0
From: Arizona
Car: 1989 IrocZ Convertable
Engine: 350 5.7
Transmission: AUTO 4 SPD, THM 700 R4
Axle/Gears: AXLE REAR, 2.73 RATIO
Re: how many 89 verts were made???
anyone know how many of the 89s were marked as vert in the vin, and not labled as a ttop and then converted to a vert after leaving factory? i know they were all done by asc but i believe some were marked in vin as ttop (and the only way to get a 350) and some were marked as vert and only allowed the 305. i have the latter and wondering how many were produced in 89, or how i can find out? thaks.
Last edited by Phx89Iroc; Sep 28, 2011 at 01:54 PM. Reason: typo
Member
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Joined: Sep 2011
Posts: 330
Likes: 1
From: Illinois
Car: 88 Iroc-Z Convertible
Engine: 305 TPI
Transmission: 700R4
Re: how many 89 verts were made???
If they were ordered from the factory as a convertible, they should be a "3". otherwise, it was a Owner(or perhaps Dealer) aftermarket conversion and not tracked by GM. ASC might know exactly how many 350 ttop conversions they did, but I dont expect them to provide that info to anone that calls.
Joined: Dec 2001
Posts: 9,937
Likes: 636
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 89 verts were made???
If they were ordered from the factory as a convertible, they should be a "3". otherwise, it was a Owner(or perhaps Dealer) aftermarket conversion and not tracked by GM. ASC might know exactly how many 350 ttop conversions they did, but I dont expect them to provide that info to anone that calls.
Thread Starter
Junior Member
Joined: Jan 2011
Posts: 89
Likes: 0
From: Arizona
Car: 1989 IrocZ Convertable
Engine: 350 5.7
Transmission: AUTO 4 SPD, THM 700 R4
Axle/Gears: AXLE REAR, 2.73 RATIO
Member
iTrader: (1)
Joined: Sep 2011
Posts: 330
Likes: 1
From: Illinois
Car: 88 Iroc-Z Convertible
Engine: 305 TPI
Transmission: 700R4
Re: how many 89 verts were made???
Junior Member
Joined: Feb 2008
Posts: 16
Likes: 0
From: New Mexico
Car: Corvettes and an IROC convert
Engine: IROC LB9
Transmission: 5 speed
Re: how many 89 verts were made???
A more general question....were all factory convertibles built at Van Nuys and then run over to ASC? In other words, did they ship any from Norwood for conversion?
Junior Member
Joined: Jan 2012
Posts: 8
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From: Los Ageles, Cali
Car: 90RS Conv 5spd
Engine: Stock 305tpi
Transmission: T5, 5spd
Axle/Gears: limited slip,
Re: how many 89 verts were made???
Well this data is Xcellent this means that about 640 RS Conv were built, wow i have a rare car, 5spd,Conv,
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Joined: Mar 2001
Posts: 14,293
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From: Doghouse ······································ Car: 1989 Formula 350 Vert Engine: 350 L98 Transmission: 700R4 Axle/Gears: B&W 3.27
Car: 87 Formula T-Top, 87 Formula HT
Engine: 5.1L TPI, 5.0L TPI
Transmission: 700R4, M5
Axle/Gears: Sag 3.73, B&W 3.45
Re: how many 89 verts were made???
If they were ordered from the factory as a convertible, they should be a "3". otherwise, it was a Owner(or perhaps Dealer) aftermarket conversion and not tracked by GM. ASC might know exactly how many 350 ttop conversions they did, but I dont expect them to provide that info to anone that calls.
142 GTA or Trans Am's with the 350
42 Formula 350's
4 IROC Z's (in 1987)
John
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Joined: Mar 2005
Posts: 123
Likes: 2
From: orange county indiana
Car: 89 rs vert/88 t/a GTA
Engine: 355 tbi/350 tpi
Transmission: 700r4 w/megashifter/700r4
Axle/Gears: 3.73/???
Re: how many 89 verts were made???
How many others are out there? i know theres at least 2 of us that have bought the reproduction(from Hawks) trim piece that goes around the handles only to realize its not right for our cars.
Which reminds me i never did return that or whats left of my original so they can make a new mold...hrmm....*mental note call hawks tommorow lol*
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