zf transmission, so what diff?

[e30s52]

I think he had the 3.25lsd

[e30polak]

So I put in my IE race bushings, ss braided lines, and my 2.93 lsd. I couldn't be happier.... 0 - 100 is so quick. I love it. And at 80 mph I'm at 3100 rpm. I love it!!!

What diff were you running before, 2.73??? 3.25/3.46 ftmfw!!! :up:

[jahnaboi]

So I put in my IE race bushings, ss braided lines, and my 2.93 lsd. I couldn't be happier.... 0 - 100 is so quick. I love it. And at 80 mph I'm at 3100 rpm. I love it!!!

[e30polak]

Could have sworn the stock ratio on an E36 M3 differential was 3.15.

I believe that the stock diff was a 3.15 or a 3.25. I know the M Coupe came with a 3.23.

[Ray McCooney]

Could have sworn the stock ratio on an E36 M3 differential was 3.15.

[napabavarian]

32000 rpms?

Holy shit.

Rotary?

[kevdeno]

Mine has the Getrag e36 gearbox with a M50 non vanos using a 3.25 rear end gear. Honestly, getting sick of the high strung nature. I was looking to see what the E36 was using for a rear gear because I doubt anyone likes cruising at 70mph at 3200-3400rpm. Gets old pretty quick. Is there a noticable drop in acceleration when dropped to a 2.93?

I have an M50 non-vanos as well. I tried 3.46 and changed to 2.93, my preference. Sure, you'll notice a little drop going 3.25 to 2.93, but like Uber E30 said, if you drive any highway miles it'll be worth it. The M50 non-vanos pulls quite strong at high RPMs, where I've found it's most fun because you get to spend a little more time in each gear taking advantage. With my 3.46, the short bursts in each gear used to be fun, but it got old driving like this every day.

[Uber E30]

2.93 is the stock diff unless it was an m3, then it was a 3.25. There will be a small drop, but if you do alot of highway then it will be worth it.


OT: i use to live in Florence, did you go to BCHS?

[DTRguy]

Mine has the Getrag e36 gearbox with a M50 non vanos using a 3.25 rear end gear. Honestly, getting sick of the high strung nature. I was looking to see what the E36 was using for a rear gear because I doubt anyone likes cruising at 70mph at 3200-3400rpm. Gets old pretty quick. Is there a noticable drop in acceleration when dropped to a 2.93?

[e30polak]

I have a ZF and have tried 3.46 and 2.93. I'm much happier with 2.93 because I do mostly commuting. And even still, the 2.93 is fun and fast. When I had the 3.46 in it felt too high strung. I wouldn't recommend it to anyone who would expects to be on the highway. It's really only suited best for around town or auto-crossing. I was using 5th gear in town at 40-50 mph. 80 mph was roughly 4000 RPMs.

That's fine if you have a 6 speed, just pop it into 6th on the freeway/highway and enjoy better gas milage. The main reason I want a 6 speed, is to run a torquier rear end, while maintaining my current milage. I don't mind a little more shifting.

[vr4boy]

32k, that's like formula 1 shit and then some

3200 perhaps?

big ooopsss missed a decimal point there:-)
3.2k rpm or 3200 rpm....

[SpecM]

there is the miscommunication, all other references to getrag's in this thread are referring to the getrag 260 from the e30 325, not e36 getrag

yep the e36 trannies (g250/zf310/320) have simular ratios, but the e30 getrag 260 has 4th 1:1 and an overdrive

[kevdeno]

I have a ZF and have tried 3.46 and 2.93. I'm much happier with 2.93 because I do mostly commuting. And even still, the 2.93 is fun and fast. When I had the 3.46 in it felt too high strung. I wouldn't recommend it to anyone who would expects to be on the highway. It's really only suited best for around town or auto-crossing. I was using 5th gear in town at 40-50 mph. 80 mph was roughly 4000 RPMs.

[Jesse30]

zf with 3.73 isnt that bad. you can drive it with it.


i would look for a 3.46 though, or even 3.25..

[MIKe30]

I was talking E36 trannies. It is my understanding that the Zf and Getrag ratios are so similar that they are interchangable.

Getrag (92-95) ZF (96+)
1 4.23 4.20
2 2.52 2.49
3 1.66 1.67
4 1.22 1.24
5 1.00 1.00

there is the miscommunication, all other references to getrag's in this thread are referring to the getrag 260 from the e30 325, not e36 getrag