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

700r4?

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Old Mar 22, 2008 | 09:07 AM
  #1  
mouthforcombat's Avatar
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Joined: Jul 2007
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From: Minneapolis, MN
Car: '86 Iroc Z
Engine: 305 TPI
Transmission: 700r4
700r4?

I am curious to know... Do all third gen 305's have a 700r4 with a posi rear end?
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Old Mar 22, 2008 | 09:28 AM
  #2  
TADailyDriver's Avatar
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From: Lowell, Michigan
Car: 1988 Trans Am, 2005 Sierra 2500
Engine: Vortec 357
Transmission: Built TH700R4 with 26-2800 Stall
Axle/Gears: GM 10 bolt 3.73 Posi
Re: 700r4?

Not all but most did come with 700r4's. My T/A has a 700r4 but then my formula has a T5 manual. Just depends on if it came with a 305 TBI or a 305 TPI.
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Old Mar 22, 2008 | 10:43 AM
  #3  
mouthforcombat's Avatar
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Joined: Jul 2007
Posts: 137
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From: Minneapolis, MN
Car: '86 Iroc Z
Engine: 305 TPI
Transmission: 700r4
Re: 700r4?

I've got the LB9 TPI... So I could assume that's a 700r4. What about posi, did they all come with that or were some limited slip?
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Old Mar 22, 2008 | 11:30 AM
  #4  
EH82Z28's Avatar
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Joined: Aug 2005
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From: Kirksville, MO
Car: 1988 Camaro Sport Coupe
Engine: 305 TBI
Transmission: 700-R4
Axle/Gears: 10 Bolt, 2.73 open diff
Re: 700r4?

Originally Posted by mouthforcombat
I've got the LB9 TPI... So I could assume that's a 700r4. What about posi, did they all come with that or were some limited slip?
Most of the sport coupes came with a 2.73 open diff. My old 82 Z28 also had an open diff.
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Old Mar 22, 2008 | 03:13 PM
  #5  
TADailyDriver's Avatar
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iTrader: (8)
 
Joined: Feb 2008
Posts: 550
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From: Lowell, Michigan
Car: 1988 Trans Am, 2005 Sierra 2500
Engine: Vortec 357
Transmission: Built TH700R4 with 26-2800 Stall
Axle/Gears: GM 10 bolt 3.73 Posi
Re: 700r4?

Ya my 88 Trans Am w/ a 305 TBI has an open diff, but ppl just call it posi track.
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