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What rotors to get for '89 rear discs?

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Old Dec 15, 2003 | 02:07 PM
  #1  
formul8!!'s Avatar
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From: www.thirdgentech.com
Car: 2004 GTO
Engine: LS1
Transmission: T-56
What rotors to get for '89 rear discs?

My Formula has the larger '89 rear discs. After 91,000 miles of service, it is time to replace them.

I am installing 1LE brakes in the fronts soon.

Where can I get good quality replacement rear rotors for these brakes?

Thanks!
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Old Dec 16, 2003 | 03:04 AM
  #2  
CRace46's Avatar
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Do NOT use Powerslot rotors, They are the softest rotor I have ever seen. The metal they use is crap. I would recommend using good ol' A/C Delco performance rotors. They are called Durastop Performance rotors and can be found in the GM performance Parts Catalog.
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Old Dec 16, 2003 | 03:14 AM
  #3  
Justins86bird's Avatar
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From: Another world, some other time
Car: 86 LG4 & 92 TBI Firebird
Engine: The Mighty 305!
Transmission: 700R4
Axle/Gears: 3.42
The Autozone AIMCO solid rotors seem to be good. Thats what I'm using.
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Old Dec 16, 2003 | 08:02 AM
  #4  
CEP89's Avatar
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From: White Lake, MI
Car: 89' IROCZ
Engine: 5.7 L98
Transmission: 700r4
Another vote for Autozone's solid rotors. Unless you are running an adjustable proportioning valve and hitting the rears really hard, then BAER
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Old Dec 17, 2003 | 01:38 AM
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ebmiller88's Avatar
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From: Fort Mill, SC, USA
Car: '88 Iroc, '91 RS, and a '70 RS
Engine: 5.7 TPI; 5.0 TBI; ZZ4/T56 on the ag
Transmission: A4, A4, slated to be a T56
Thunder or Tbyrne has Baer Eardispeeds on sale thru the end of the month, around $250/pr.


Ed
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Old Dec 17, 2003 | 11:34 PM
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norcalz28's Avatar
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From: Troup, Texas
Car: 1989 Camaro IROC-Z
Engine: ZZZ# 0607 of 1200 produced
Transmission: Pro-Built 700R4/Vig.2400
Axle/Gears: 3.27 BW 9 Bolt PBR Disc
Irotors.com

Irotors sells them on ebay. I just picked up all 4 for my car at a very nice price. Shipping was very nice too, for a box that must have weighed 50lbs. What I like about these are they are directional. Other cheap brands offer drilled/slotted rotors that face one way on the left and one way on the right. These are true right and left rotors


here is a pic




Will
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Old Dec 18, 2003 | 10:09 PM
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89Formula5.7's Avatar
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From: Elizabethtown, KY
Car: 89 Formula 350
Engine: L98 w/ Stealthram
Transmission: 700R4
Axle/Gears: 9 bolt 3.27
I second irotors.com. I have about 2000 mi on mine and I love them. $240 for all 4 wheels on their site.
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Old Dec 23, 2003 | 09:29 PM
  #8  
84 1LE's Avatar
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From: Oyth
Car: 89RS vert
Engine: Erod
Transmission: 4L65e
Axle/Gears: BW, 3.27
Re: What rotors to get for '89 rear discs?

Originally posted by formul8!!
My Formula has the larger '89 rear discs. After 91,000 miles of service, it is time to replace them.

I am installing 1LE brakes in the fronts soon.

Where can I get good quality replacement rear rotors for these brakes?

Thanks!
Got mine on ebay also,but they are from(buyfrome2003).There may be ane more (m)in his name.got all 4 for just over $200.
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Old Dec 24, 2003 | 01:02 AM
  #9  
joshwilson3's Avatar
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.

Last edited by joshwilson3; Apr 21, 2012 at 04:42 AM.
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Old Dec 24, 2003 | 08:03 AM
  #10  
mystikkal_69's Avatar
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From: San Antonio, TX
Car: 1988 IROC-Z
Engine: L98 (350 TPI)
Transmission: MD8 (700 R4) + 3.42 LS1 Rear
Originally posted by joshwilson3
Can 15" wheels fit on a PBR brake rotor? I have 15" wheels and was looking at putting on a rear with PBR brakes out of another third gen and was wondering if my wheels will work, or if I need 16" or larger.

thanks
they will clear 15" wheels. atleast the z28 style wheels that is.
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Old Dec 24, 2003 | 09:42 AM
  #11  
JMatlock88's Avatar
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From: Stillwater, OK
Car: 1991 Formula
Engine: 355 DFI Superram w/ R-Trim
Transmission: Probuilt 700r4
With slight grinding of the caliper fins, 15" Centerline Telstars fit over the PBRs.
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