Transmissions and Drivetrain Need help with your trans? Problems with your axle?

Looking for 3.9's for your 10 bolt?

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Old Oct 2, 2009 | 08:02 PM
  #1  
bl85c's Avatar
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Car: '85 maro
Engine: In the works...
Transmission: TH700 R4
Axle/Gears: 3.73 posi
Looking for 3.9's for your 10 bolt?

Anyone interested in 3.9 gears for your 7.5" 10 bolt should take a look here. Guy cuts them himself and is pretty reasonable on the price.
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Old Oct 3, 2009 | 08:47 AM
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Re: Looking for 3.9's for your 10 bolt?

Motive Gear sells them through Summit Racing.
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Old Oct 3, 2009 | 08:18 PM
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Car: '85 maro
Engine: In the works...
Transmission: TH700 R4
Axle/Gears: 3.73 posi
Re: Looking for 3.9's for your 10 bolt?

I can't find them on summit. Did you call motive?

Last edited by bl85c; Oct 3, 2009 at 09:15 PM.
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Old Oct 5, 2009 | 10:43 AM
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From: Northern Utah
Car: seeking '90.5-'92 'bird hardtop
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Transmission: none
Axle/Gears: none
Re: Looking for 3.9's for your 10 bolt?

Nope, just looked in my current Summit catalog, for Sep-Oct 2009, Page 224, right column, halfway down. Motive Gear Performance Ring-and-Pinion Sets MGR-G875390 3.90 $209.95. So I went to www.summitracing.com and searched that, just thgis second, it comes up. Here's a link:
http://www.summitracing.com/search/?...-G875390&dds=1
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Old Oct 5, 2009 | 06:44 PM
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Car: '85 maro
Engine: In the works...
Transmission: TH700 R4
Axle/Gears: 3.73 posi
Re: Looking for 3.9's for your 10 bolt?

Ah, wonder why they never came up in my search.
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Old Oct 24, 2009 | 02:53 PM
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Re: Looking for 3.9's for your 10 bolt?

I just found this; http://www.drivetrainspecialists.com...duct-1771.html
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Old Oct 25, 2009 | 09:12 AM
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Re: Looking for 3.9's for your 10 bolt?

hope you dont plan on using the highway with 4.30's......... 3.73s or 3.90's would be better
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