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Another IROC has caught my fancy, but a couple of questions.

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Old Apr 10, 2011 | 07:52 PM
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Car: 1989 IROC-Z. Original owner
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Another IROC has caught my fancy, but a couple of questions.

http://cgi.ebay.com/ebaymotors/ws/eB...MEWAX:IT#v4-38






Lots of miles, blown tranny, etc.

But I've never seen this color combo before, could you order that or does this car have a interior transplant? And what about the 145 mph speedo? I thought those were only on G92 or 5.7 cars?

Last edited by chazman; Apr 10, 2011 at 08:02 PM.
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Old Apr 10, 2011 | 08:11 PM
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Re: Another IROC has caught my fancy, but a couple of questions.

OK...is it just me, or does the font on that odometer NOT look right, and doesn't appear to match the trip odo font???

I don't see why you couldn't order red on red with gold...it just looks odd compared to going with the tan interior. Can't help you with the 145 speedo...I do know it did NOT have to be a G92 to get 145 MPH, though/....
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Old Apr 10, 2011 | 08:19 PM
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Car: 1989 IROC-Z. Original owner
Engine: LB9. Dual Cats. Big Cam
Transmission: World Class T-5
Axle/Gears: BW 3.45
Re: Another IROC has caught my fancy, but a couple of questions.

Red on red with gold I've seen. This is Burgundy, (Flame Red?).


EDIT: YES you could order that color combo. On to the speedo.
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Old Apr 10, 2011 | 09:12 PM
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Axle/Gears: 3.23 / 3.42 Auburn / 3.23 / 2.62
Re: Another IROC has caught my fancy, but a couple of questions.

I still think the font on the odo doesn't look right...maybe I'm being paranoid?
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Old Apr 10, 2011 | 09:37 PM
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Re: Another IROC has caught my fancy, but a couple of questions.

Correct me if Im wrong but the red door panels and seats dont look correct for an 89 vert.
Factory verts came with 110 mph speedos.
Rims might have been gold as my 90 vert is red on red with gold rims and decals.
The interior and speedo look like they came out of an 85 Iroc.

Last edited by irock88; Apr 10, 2011 at 09:45 PM.
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Old Apr 10, 2011 | 09:38 PM
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Re: Another IROC has caught my fancy, but a couple of questions.

Looks OK to me.... looks just like the one in my 83... didn't come there, of course, but I really have no clue what it came out of; I drove up from Carlsbad to Santa Ana to meet a guy that was parting out a car, and that's what it was.
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Old Apr 11, 2011 | 03:46 PM
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Re: Another IROC has caught my fancy, but a couple of questions.

85's still had an 85 mph speedo.
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Old Apr 11, 2011 | 03:48 PM
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Re: Another IROC has caught my fancy, but a couple of questions.

Originally Posted by Jason E
I still think the font on the odo doesn't look right...maybe I'm being paranoid?
yeah, my iroc has the 145mph speedo to, its legit. same font
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Old Apr 11, 2011 | 04:52 PM
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Re: Another IROC has caught my fancy, but a couple of questions.

Originally Posted by DAVEY420
85's still had an 85 mph speedo.
I have one out of an 85 Iroc and its 145 mph
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Old Apr 12, 2011 | 11:00 AM
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Re: Another IROC has caught my fancy, but a couple of questions.

145mph came on IROCs and Z28s starting in mid 86. I've seen early 86 cars with the old 85mph speedo, and my 86 (like most of them) has the 145mph unit.
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Old Apr 12, 2011 | 11:38 AM
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Re: Another IROC has caught my fancy, but a couple of questions.

i think it looks pretty good whether or not its OG.
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Old Apr 12, 2011 | 11:40 AM
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Re: Another IROC has caught my fancy, but a couple of questions.

Originally Posted by 1MeanZ
145mph came on IROCs and Z28s starting in mid 86. I've seen early 86 cars with the old 85mph speedo, and my 86 (like most of them) has the 145mph unit.
Yeah, I've seen early '86s with the 85 MPH speedo, and late '86s (when the law changed) with 145 speedos. But after they dropped the 85 mph law, most LB9s had 115 mph speedos and G92 cars got the 145. And in this mix, I still see 145 speedos thrown in which are not G92s or 5.7s. Just wondering how GM decided which car got which speedo.

BTW, are you going to ThirdGenFest again this year?
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Old Apr 12, 2011 | 12:17 PM
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Re: Another IROC has caught my fancy, but a couple of questions.

My 87 IROC is a 305 TPI/5 Speed car and it came with the 5000 redline and the 145 MPH speedo.
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Old Apr 12, 2011 | 02:25 PM
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Re: Another IROC has caught my fancy, but a couple of questions.

Originally Posted by chazman
Yeah, I've seen early '86s with the 85 MPH speedo, and late '86s (when the law changed) with 145 speedos. But after they dropped the 85 mph law, most LB9s had 115 mph speedos and G92 cars got the 145. And in this mix, I still see 145 speedos thrown in which are not G92s or 5.7s. Just wondering how GM decided which car got which speedo.

BTW, are you going to ThirdGenFest again this year?


Not to familiar with the 85 mph speedo but the 145 mph speedo I have is from a Canadian 85 Iroc L69 H.O. 5 speed car.
Could it be possible that the 85 Canadian Irocs came with the 145 mph speedos and the ones in the US had the 85 mph ones.
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Old Apr 12, 2011 | 03:18 PM
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Car: 1989 IROC-Z. Original owner
Engine: LB9. Dual Cats. Big Cam
Transmission: World Class T-5
Axle/Gears: BW 3.45
Re: Another IROC has caught my fancy, but a couple of questions.

Originally Posted by irock88
Not to familiar with the 85 mph speedo but the 145 mph speedo I have is from a Canadian 85 Iroc L69 H.O. 5 speed car.
Could it be possible that the 85 Canadian Irocs came with the 145 mph speedos and the ones in the US had the 85 mph ones.
Up until halfway through the '86 model year, US cars by law, could not have a speedo going past 85.
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Old Apr 12, 2011 | 05:28 PM
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Re: Another IROC has caught my fancy, but a couple of questions.

Originally Posted by irock88
Not to familiar with the 85 mph speedo but the 145 mph speedo I have is from a Canadian 85 Iroc L69 H.O. 5 speed car.
Could it be possible that the 85 Canadian Irocs came with the 145 mph speedos and the ones in the US had the 85 mph ones.
canadian cars get metric gauges
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Old Apr 12, 2011 | 05:46 PM
  #17  
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Transmission: 5 speed & auto
Axle/Gears: 3.08 & 2.73
Re: Another IROC has caught my fancy, but a couple of questions.

Originally Posted by sloick
canadian cars get metric gauges
Yes they do but if you look close you`ll see the Mph just like the US ones also show Kph
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Old Apr 13, 2011 | 12:50 AM
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Re: Another IROC has caught my fancy, but a couple of questions.

My 86's paperwork shows built in November of 85 and its got the 85mph dometer.
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