Suspension and Chassis Questions about your suspension? Need chassis advice?

need help with 11" rear wheels

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Old Oct 5, 2005 | 02:26 PM
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KiLLJ0Y's Avatar
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From: Pleasant Grove, Utah
Car: 1993 GMC Typhoon
Engine: 4.3 Turbo
Transmission: 4L60
Axle/Gears: 3.42
need help with 11" rear wheels

hey, i want to use 17x11 rear ZR1's.. i already have a 4th gen rear, the problem i ran into is and according to Skulte's site.. it says i need 50mm offset and 7.93" back spacing

anyone know where to get 17x11 ZR1's in 50mm offset with the 7.93" back spacing? tried looking on ebay.. all they want to sell is the 36mm kind WITH front wheels.. i dont need fronts..

i emailed AFS.. no repsonse.. i just need 2 rears

also just to confirm.. is this the correct size i need?

Last edited by KiLLJ0Y; Oct 5, 2005 at 05:10 PM.
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Old Oct 5, 2005 | 02:40 PM
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yea, they are slow with email.
Try giving them a call...
(818) 340-6181 Mon-Fri 9-12, 1-5pm
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Old Oct 5, 2005 | 05:06 PM
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From: Pleasant Grove, Utah
Car: 1993 GMC Typhoon
Engine: 4.3 Turbo
Transmission: 4L60
Axle/Gears: 3.42
thanks Ken
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Old Oct 6, 2005 | 12:40 AM
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From: Norfolk, VA. USA
Car: 86 Trans Am, 88 Formula
Engine: 95LT4, 305TPI
Transmission: T56, T5
If you find them post where you got them and the size you were able to find. I just bought another pair of ZR1's and would like to get 11's out back.
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Old Oct 6, 2005 | 10:13 AM
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KiLLJ0Y's Avatar
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From: Pleasant Grove, Utah
Car: 1993 GMC Typhoon
Engine: 4.3 Turbo
Transmission: 4L60
Axle/Gears: 3.42
will do.. i didnt have time to call them yesterday but i will today.
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Old Oct 6, 2005 | 11:44 AM
  #6  
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From: Pleasant Grove, Utah
Car: 1993 GMC Typhoon
Engine: 4.3 Turbo
Transmission: 4L60
Axle/Gears: 3.42
DOOOOD... AFS is awesome..

ok i talked to a Samantha, sales rep..

17x11 in the 50mm 7.93 backspacing.. they refer to this as the "stock grand sport" setting

$325 in silver paint finish FOR 2 wheels!!!



ordered mine
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Old Oct 6, 2005 | 11:38 PM
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From: Norfolk, VA. USA
Car: 86 Trans Am, 88 Formula
Engine: 95LT4, 305TPI
Transmission: T56, T5
Sweet.

By the way, you may have to have the rear end jacked up from the pumpkin when you mount the wheels and tires.
Having the rear end sag will most likely cause the wheel not to go on since the tire will hit the bump stop.
Also, when the wheels are mounted you may not be able to lift up the car without taking the back wheels off first since the wheel will hang up on the bump stop.

I tried to put Grand Sport rears on my car a few years back to see how they would look.
It was raining and I was in a hurry so I jacked up the body and the wheel wouldn't go on since the bump stop was in the way.
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Old Oct 7, 2005 | 11:49 AM
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From: Pleasant Grove, Utah
Car: 1993 GMC Typhoon
Engine: 4.3 Turbo
Transmission: 4L60
Axle/Gears: 3.42
thats true.. i was reading that somewhere on this site before..

good to know..

now i have to decide on what tire to get.. i was checking out tirerack.. there was basically only 3 street tires they had for a 315/35/17 ... they were summitomo HTZ... or BFG K/D's or Goodyear GSD3's

i think i'll going with the goodyear.. but damn 268$ each.. sucks
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Old Dec 7, 2005 | 04:59 PM
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From: Mass
Engine: 350 TPI
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Killjoy, did you get your wheels put on your car yet? I REALLY need to know how you made out. I have 17x11's on my car with the 4th gen rear but the tire sticks out just a tad bit more then I would like. I am unsure of the backspacng and offset on my wheels. I need to know what your look like and if they stick out and or rub on the inside. Please, if possible take a pic of the wheel as if you where looking at it from down the side of the car. I need to know because Iam ditching my current wheels because of this issue I have with the rear and the fact that I do not want to run spacers up front with the 9.5" wheels. Plus my nice new Z06 brakes dont show up to good with the spacers being there.
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Old Dec 8, 2005 | 01:39 PM
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From: Pleasant Grove, Utah
Car: 1993 GMC Typhoon
Engine: 4.3 Turbo
Transmission: 4L60
Axle/Gears: 3.42
have the wheels but no tires on them yet... been too busy screwing around with finishing my basement down stairs and doing various work projects.. soon though.. sorry man
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