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Re: Anyone switched a 3.73 to a 3.91 in a 87 325is (archive)
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Posted by Dave on May 06, 2001 at 23:53:39:

In Reply to: Anyone switched a 3.73 to a 3.91 in a 87 325is posted by brad on May 06, 2001 at 17:09:30:

I just replaced my 3.73 with a 4.10lsd and I am really happy with it. I thought the difference would be more drastic than it actually was. Definitely more torque/power! I think the swap to a 3.91 would be fine, but I wonder if there would be enough of a difference to really justify the swap. It is not difficult job to do. I did it by myself in about 3.5 hours. Let me know if you have any questions.
Dave

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