90 + Z28 & IROC Clusters
11-01-2003, 05:59 AM
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Car: C230 Kompressor
Engine: 2.3L Supercharged I-4
Transmission: 5-Spd Tiptronic
Axle/Gears: 3.27
90 + Z28 & IROC Clusters
Ok... I know why the earlier 80s Z28 and Trans AMs have the 85 MPH speedos.... Govt reasons.... But why is it that there are a lot of 90 + IROCs and Zs that have 110 MPH speedos? yet others have the 140 MPH speedo? any info greatl if y appreciated if this has been dicussed i apologize i couldnt get the search to work
11-01-2003, 09:30 AM
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Car: 08 Sierra, 08 Silverado, 91 z28
Engine: 5.3, 4.3, 5.7
Transmission: autos
i thought only the RS came with the 110 (115?) speedos, and the IROC in 86(?)-90 and Z28s 86-87(?) 91-92 came with 145
11-01-2003, 12:04 PM
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Car: 87 IROC-Z
Engine: 305 TPI
Transmission: automatic
Axle/Gears: 3.23
No, I've got an 87 305 tpi with a 145 mph speedo in it.
I have heard that 88 and later non-g92 cars got the 110 mph, except for the 350 cars which all got the 145 speedo.
I have heard that 88 and later non-g92 cars got the 110 mph, except for the 350 cars which all got the 145 speedo.
11-05-2003, 05:14 AM
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Car: C230 Kompressor
Engine: 2.3L Supercharged I-4
Transmission: 5-Spd Tiptronic
Axle/Gears: 3.27
so wait whos right and whos wrong... does anyone know exactly what each car was supposed to come with?
11-05-2003, 07:08 AM
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I have a 90 RS with a 145MPH speedo... of course, I did get it from Ebay, but it is still there. I am pretty sure only the 350's and most IROCs got the 145MPH speedo. Anyway, it is still a pricey item anywhere you look. expect to pay no less than $200 for one in any condition.
11-05-2003, 07:37 AM
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Car: 1990 Camaro RS
Engine: Juiced 5.0 TBI - 300rwhp
Transmission: T5
Axle/Gears: 3.42 Eaton Posi, 10 Bolt
i always thought that all the cars with the speed rated tires got the 145s, i would assume the B4C cars got them, which are RS cars. i am sure the 1LE cars got them also, alot of them are 305's. the way i figure the cars that were not speed limited at 112mph got the 145 speedos, the rest got 110 since they were limited there, they didnt' need more.
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11-05-2003, 10:19 AM
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This really is a question for Willie over on the History board, I have no doubt he could answer it correctly for you.
I got mine from IROCZDAVE for $90. Here's his site:
IROCZDAVE's Page
He has 3 left, here's one of them. He is very reputable, and is easy to do business with.
Originally posted by Bandit5
I have a 90 RS with a 145MPH speedo... of course, I did get it from Ebay, but it is still there. I am pretty sure only the 350's and most IROCs got the 145MPH speedo. Anyway, it is still a pricey item anywhere you look. expect to pay no less than $200 for one in any condition.
I have a 90 RS with a 145MPH speedo... of course, I did get it from Ebay, but it is still there. I am pretty sure only the 350's and most IROCs got the 145MPH speedo. Anyway, it is still a pricey item anywhere you look. expect to pay no less than $200 for one in any condition.
IROCZDAVE's Page
He has 3 left, here's one of them. He is very reputable, and is easy to do business with.
Last edited by Adam Jones; 11-05-2003 at 10:23 AM.
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