Bigger diff

[Johnmadd]

Did a lil research and I must find a rear diff from an automatic 330, it has 3.64 gears and the manuals have 3.07 or something like that. Less mpg's but more low end tourqe is worth it to me.

[danewilson77]

Really....so we're gonna take this on?

Droid! Srs Legitness!

[Johnmadd]

Wish I could get a lsd but this would make me happy. Higher diff equals more pull and ass felt HP.

[jvr826]

I have a 3.46 open in mine from a '99 autotragic 323. Best bang for the buck evah! I paid $200 shipped for it a couple years ago.

Also wish I could have gone LSD, but far too much coin. I wish there was a cheaper way to do that cuz it is a big improvement to getting the power down when exiting corners.

[ZSP-Mafia]

I did the 2.97 to 3.38 swap and the difference was substantial. Of course, I have a 5spd, so I'm doing 4000 rpm's at 80. But I don't do a lot of highway driving so it works for me.

[Johnmadd]

I have a 3.46 open in mine from a '99 autotragic 323. Best bang for the buck evah! I paid $200 shipped for it a couple years ago.

Also wish I could have gone LSD, but far too much coin. I wish there was a cheaper way to do that cuz it is a big improvement to getting the power down when exiting corners.

Exactly this, and off the line at the stoplights.

I did the 2.97 to 3.38 swap and the difference was substantial. Of course, I have a 5spd, so I'm doing 4000 rpm's at 80. But I don't do a lot of highway driving so it works for me.

I have a 4.10 lsd in my e30 and at 75mph im just above 3k on the tach.

[Gheybe]

Isn't the 3.64 from an automatic meaning its a 5 speed?

[kaboom]

I think a 3.46 might be a little tight for us, a 3.38 should be perfect! Or a 3.46 with a higher rev limit.

Ian

[bullfrogs_M3]

Don't just swap diffs. Find an M3 rear end and swap that ish! M3's are higher geared and LSD. Plush they almost completely line up and swap out. Your rear offsets will change but whatever.....

Here is what you need from an M3


Some info from E46 fanatics
http://forum.e46fanatics.com/showthread.php?t=696388

Putting this in here because...well.....this is my summer project

[ZHP-FTW]

Did a lil research and I must find a rear diff from an automatic 330, it has 3.64 gears and the manuals have 3.07 or something like that. Less mpg's but more low end tourqe is worth it to me.

Do you mean 3.46 diff? Cause 3.64 is really high and I think is from the M3 only. I would recommend a 3.38 or 3.46 as those add a fairly aggressive bump in the low end. Personally I think a 3.64 would be too many rpms at cruising and require CONSTANT shifting. just my 2 cents.