Transmission & Drivetrain Gearboxes, Differentials, Clutches

how to id. gsr or ls differential

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Old Sep 11, 2012 | 01:44 AM
  #1  
carlos8's Avatar
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Default how to id. gsr or ls differential

i need to put an lsd on my s80 tranny, but how i know if is gsr or ls differential
the ring gear is 66 thoot. Any identification mark on the ring gear to know if is
gsr or b16 4.40

thanks in advance
carlos
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Old Sep 11, 2012 | 03:32 AM
  #2  
MR.johnson's Avatar
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Default Re: how to id. gsr or ls differential

Originally Posted by Synchrotech-Transmissions
The LS FD also has 2 ID lines on the R/G with a 109.8mm hole but with a 64 tooth ring gear.

B series transmissions 1994-2001

LS: 64T (tooth) R/G 2 lines (109.8mm), 15T C/S 2 lines, 26T M/S 3rd 2 lines.

GSR: 66T R/G 1 line (116.8mm), 15T C/S 3 lines, 25T M/S 3rd 1 line.

B16 66T R/G 2 lines (109.8mm), 15T C/S 3 lines, 24T M/S 3rd no line.
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Old Sep 11, 2012 | 05:21 AM
  #3  
carlos8's Avatar
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Default Re: how to id. gsr or ls differential

thanks, very helpfull
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Old Sep 11, 2012 | 05:56 AM
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David @ Synchrotech's Avatar
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Default Re: how to id. gsr or ls differential

You can also look at the OEM open diff. It will be stamped P80 for a GSR or PS1 for LS and B16.
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Old Sep 11, 2012 | 02:16 PM
  #5  
carlos8's Avatar
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Default Re: how to id. gsr or ls differential

Great, nice info exactly what i'm looking. thanks synchrotech.
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