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

2.77 to 3.27 is this all I need?

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Old Mar 25, 2007 | 11:18 AM
  #1  
IROCThe5.7L's Avatar
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Car: 1988 IROC-Z
Engine: 427 SBC
Transmission: ProBuilt 700R4
Axle/Gears: Moser 12 Bolt / 3.73 TrueTrac
2.77 to 3.27 is this all I need?

Ok, I order to go from my 2.77 to 3.27's, I am going to need the pinion, ring gear, and carrier correct? Anything else that I'll need?

This is what I got so far:




Thanks!
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Old Mar 25, 2007 | 11:38 AM
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//<86TA>\\'s Avatar
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Car: 86 Trans Am
Engine: 408 stroker sbc
Transmission: TKO600
Axle/Gears: Moser full floater m9, 3:70 trutrac
Re: 2.77 to 3.27 is this all I need?

are those caps from your rear or a different? they are all different and specific to each individual rear, as well a left and right. do not mix them up or you will be f-ed.

if the 3.27 requires a different carrier, then yes, all you need is the gears and the new carrier, unless you get a new set of gears, then you can get a gear set already set up for whatever carrier you already have. new bearing are also a good idea. you can use your old yoke, the splines are the same for all 7.5 10 bolts.

you also need the appropriate speedo correction gears.
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Old Mar 25, 2007 | 11:55 AM
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IROCThe5.7L's Avatar
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From: Buffalo, NY
Car: 1988 IROC-Z
Engine: 427 SBC
Transmission: ProBuilt 700R4
Axle/Gears: Moser 12 Bolt / 3.73 TrueTrac
Re: 2.77 to 3.27 is this all I need?

Thanks! Everything in that picture is from a 3.27 rear. Looks like all I need is the carrier and ring gear from that rear end.

Last edited by IROCThe5.7L; Mar 25, 2007 at 11:59 AM.
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Old Mar 25, 2007 | 01:26 PM
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//<86TA>\\'s Avatar
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From: Central NJ
Car: 86 Trans Am
Engine: 408 stroker sbc
Transmission: TKO600
Axle/Gears: Moser full floater m9, 3:70 trutrac
Re: 2.77 to 3.27 is this all I need?

like i said, use your bearing caps, dont use the ones from the other rear.
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Old Mar 25, 2007 | 04:10 PM
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IROCThe5.7L's Avatar
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Joined: Jul 2001
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From: Buffalo, NY
Car: 1988 IROC-Z
Engine: 427 SBC
Transmission: ProBuilt 700R4
Axle/Gears: Moser 12 Bolt / 3.73 TrueTrac
Re: 2.77 to 3.27 is this all I need?

Originally Posted by //<86TA>\\
like i said, use your bearing caps, dont use the ones from the other rear.
Will do, thanks again. It is appreciated.
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Old Mar 25, 2007 | 05:41 PM
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Car: 1984 Trans Am
Engine: 305
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Re: 2.77 to 3.27 is this all I need?

If I'm not mistaken, ring and pinion gears are matched sets which are lapped together. You can not mix non matching part without something bad happening.
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Old Mar 25, 2007 | 06:20 PM
  #7  
//<86TA>\\'s Avatar
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Joined: Aug 2006
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From: Central NJ
Car: 86 Trans Am
Engine: 408 stroker sbc
Transmission: TKO600
Axle/Gears: Moser full floater m9, 3:70 trutrac
Re: 2.77 to 3.27 is this all I need?

you are corrrect
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