Morning,
I looked on the e30 wiki and it says a 1988 e30 320i is 4.10 ratio. I assume this is for a manual.
What is the diff ratio of the Automatic? I hear they're different.
We are pretty much finished with the manual conversion and are in the process of building an m20 2.7 which i read a 3.73 is the one to go for as it will never see a track.
320i Auto diff ratio
Moderator: martauto