Anybody have a 4.10 in a 325i? Bad idea for daily?

[brn2ply7]

My new e30 autotragic has a 4.10 lsd in it but i also have two 3.73 lsd' . Which do you guys think i should go with for my daily driver? P.s switching to a 5-speed

[mattdk318i]

Im running a 4.10 in my cabrio.....Its pretty streetable. Not practical but def not something you couldnt drive

[BakesE30]

If you are going to daily drive it and do a lot of highways I would go with the 3.73. The 4.10 is fun to play around with but gas mileage suffers.

[MrSpectre]

I have a 4.1 with a 5-speed and it is crazy forget about first gear altogether as it will be pretty much useless haha

[e30trooper]

i have a s3.91 but also have a m10 so highways isnt to bad, just getting around 23-25mpg doing 80ish mph 80mph = 4,000 rpms LOL, not sure with a m20 tho

[Mike]

Interested in selling one of your diffs? I work in Alexandria.

[nando]

IMO the 4.10 is perfect to wake up a stock 2.5 M20. It's not bad at all to drive on the street and the highway MPG difference isn't that much.

[Stevie30]

I agree with nando. After driving my '91 with a 4.10, my '89 with a 3.73 seems sluggish.

[brn2ply7]

Well i don't drive too much on the highway. Proably twice i have a 30 mile round trip. And i do drive a good 800 mile roud trip to the beach every summer. But i guess i could deal with it for that uch driving.

[DmcL]

i recently swapped my auto for a 5 speed and kept the 4.10. its great, sure 5th gear ends up being roughly 1:1 but i think the gains outweigh the drawbacks. at 60mph in 5th the engine is turning about 2500rpm ish.

[MrSpectre]

I am going with a turbo so I didn't want to rock a 4.10 open so I put in a 3.73 LSD

[Erick]

i recently swapped my auto for a 5 speed and kept the 4.10. its great, sure 5th gear ends up being roughly 1:1 but i think the gains outweigh the drawbacks. at 60mph in 5th the engine is turning about 2500rpm ish.

Yeah but do you cruise at 60mph? I'd hate you if you were in front of me :p

[nando]

Yeah but do you cruise at 60mph? I'd hate you if you were in front of me :p

the speed limit here is 70.. 75mph is fine

[Kingb]

Well over here on the autobahn the 4.10 sucks gas. But I topped out at 227kph about 141mph with my euro 325i. I just switched to a 3.73 LSD, I lost all that power but get better gas mileage. Haven't toped it out yet.

[nando]

top it out, it would be interesting to see the diff in top speed. I bet it's not much!

I'd also kindof assume that fuel economy in an E30 would suck at 140mph no matter what gearing you had. :p