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Old 07-22-2010, 01:46 AM   #1
3rd Gear Member
Join Date: Oct 2006
Location: kincardine ontario
Posts: 550
what diff should i use?

I have an 84 318i auto. I am not sure what diff it came with , i think maybe 3.84? I also have a 325i manual parts car, no idea what it would have in it. Which diff will give me the best results, the one that came with the 318i or the one from the 325i.
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Old 07-22-2010, 12:23 PM   #2
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Join Date: Apr 2006
Location: Milton
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Your best option would be the 4.10 open diff i have in my garage waiting for a buyer

Originally Posted by richie_s999 View Post
Grow up and move on.
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Old 07-22-2010, 07:30 PM   #3
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Originally Posted by E30M42cab View Post
Your best option would be the 4.10 open diff i have in my garage waiting for a buyer
He might be whoring, but he's not wrong. Putting the lower ratio diff from a 325 in your m10-powered 318i is going to make it aaaawwwwffffuuuulllyyy slooooow.

The 4.10 will help you reach highway speed the same day you enter the onramp...
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