I recently swapped my auto 325es to a m20b25 engine with a manual trans. The car currently has a 2.93 and I feel like I can’t get out of 2nd gear on the back roads. I have a 3.64 and a 3.73 gear set. Which would you recommend. The car will be mainly a fun car to drive and maybe a track day or 2 a year.
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3.64 or 3.73
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Originally posted by D3R3K View Post
Why’s that? They are both for a medium case diff.
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Originally posted by jsta1109 View Post
The carrier offset changes from 3.07 to 2.79 meaning any ring gears from 3.15 up won't fit. Racing Diffs sells a "differential crown ring spacer" that allows you to adapt but depending on price you'll probably be better off purchasing a complete diff with the correct ratio.
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Originally posted by jsta1109 View Post
The carrier offset changes from 3.07 to 2.79 meaning any ring gears from 3.15 up won't fit. Racing Diffs sells a "differential crown ring spacer" that allows you to adapt but depending on price you'll probably be better off purchasing a complete diff with the correct ratio.
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