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The 420's did not have them stock.

The 560's had them stock... AMG also offered a GT differential.
 

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'80 450SLC Afro RHD Ikonengold
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Louie_D said:
My car dosnt seem to have LSD, were any models released with it?
In some countries LSD is illegal, you know.

I read of some SEC (if not 560 only like Snibble sayz) having limited slipp diff
 

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1999 E55, 2001 E320, 1990 560 SEC, 2004 ML350, 2001 ML55, 1995 S500, 1998 SL500, 2010 E550 Sport zoo
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And Gleason made a aftermlarket Torsen differentil for 560..

And Gleason in the late '80's and early '90's made a Torsen differential replacement that could be fitted as a additional AMG aftermarket option.

A LSD will allocate the torque in "steps" and will deliver up to 70/30 ... the Torsen system uses anopther mechanical system entirely, with much more specific delivery in almost infinite portion allocation, and up to a higher max of 90/10.

Gleason sold out in '89, and now Torsen units are seen in only some high end 4x4 (like orignal HUMv and Hummer) and limited luxury or race perfomance applications...

A Gleason back in the day was about $4K installed...
 

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Mercedes 420 SEL 87'
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Discussion Starter #7
If i was to install a 3.07 ratio diff would i need to get the speedo recalibrated?
 

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1990 SEC
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Louie_D said:
If i was to install a 3.07 ratio diff would i need to get the speedo recalibrated?
Yes, if your current diff is different from 3.07 you'll need the Dakota Digital SGI-5.

Universal Speedometer Signal Interface

It is easy to install and with the help of a GPS receiver or a friend in another car on a cell phone, you'll be able to re-set the speedo.

 
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