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89 Iroc

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Old Feb 10, 2005 | 11:36 PM
  #1  
Black85sport's Avatar
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From: North Dakota
Car: 91 Silverado
Engine: 350 TBI, EBL Tuned
Transmission: 700R4
89 Iroc

I'm buying an all original 89 Iroc tomorrow. It is blue with ttops, TPI 350, 700R4, and power everything. Is it rare to have 4 wheel disc brakes? I'm not sure what rear end the car has in it.
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Old Feb 11, 2005 | 07:16 AM
  #2  
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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
its more unusual to have the 350 with T-tops that 4 wheel disk brakes...

4 wheel disk brakes are common especially with anything that a performance option like the 350 TPI or 305 TPI... They were an option I believe on all of the other models as well..

John
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Old Feb 11, 2005 | 07:36 AM
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Car: 1987 Black IROC-Z (SOLD)
Just make sure its a 350. Sellers alway claim the 305 is a 350. So better to be sure then sorry. So check the VIN numbers.
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Old Feb 12, 2005 | 02:12 AM
  #4  
Black85sport's Avatar
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From: North Dakota
Car: 91 Silverado
Engine: 350 TBI, EBL Tuned
Transmission: 700R4
I checked it and it is a 350
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Old Feb 12, 2005 | 07:33 AM
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From: Florida
Car: 1987 Black IROC-Z (SOLD)
Originally posted by Black85sport
I checked it and it is a 350
About your question on the rear. It should be a 2:77 BW 9-bolt unless the original owner opted for the 3:27 ratio which is a slim chance.
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