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E28 M5 diff in E24 635csi

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Jays635
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Joined: Wed Oct 31, 2007 2:14 am
Location: Dallas, TX

E28 M5 diff in E24 635csi

Post by Jays635 » Tue Jun 30, 2009 6:07 pm

Does anyone know for sure if the E28 M5 diff will directly swap out with the differential of an 1986 635csi? I have an opportunity for the M5 differential but I will only act upon it if it is a direct swap. I do not want to get involved with changing out the input shaft etc.

Regards,

Jay

alpinacsi

Post by alpinacsi » Tue Jun 30, 2009 7:44 pm

Yes it will but are you sure you want a 3.91 gear ratio?

Manny D.

Post by Manny D. » Sat Jul 11, 2009 6:13 am

alpinacsi wrote:Yes it will but are you sure you want a 3.91 gear ratio?
Why wouldnt he? Thats whats in my 1989 635csi. But his will be a big diff & LSD.

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