E46Fanatics - View Single Post - **3.91 Diff Swap: Everything you need to know!!!**
View Single Post
Old 12-13-2007, 06:19 PM   #6
Banned User
Join Date: Jan 2004
Location: Gainesville, FL
Posts: 25,616
My Ride: E46 330 and E30 325
Originally Posted by mcr_driver View Post
thank god someone did this i was almost gonna be the guinea pig to do this lol. thank you a lot for the great write up props to you let me know how the tests go. i'm wondering if this might be a issue as i'm pushing the limits of my auto tranny with a s/c. this might be a stupid question but does changing the diff. change how much torque goes to the tranny? or did i just miss the point entirely as i'm not 100% smart at tranny's and diffs. could someone elaborate please??last note which key trick are you referring to?
I think you will be ok. If I understand correctly, I don't think this changes how much torque you have, but it changes WHEN you get it. The taller the gearing (higher number), the more low end you have and the less top end you'll have.
kpeng is offline   Reply With Quote