E30 diff drive ratio?

[hoppo4.2]

any one have any idea what the finel drive ration of an e30 325i mtech would be at both the diff and gear box output?

[TheEnd]

I'm pretty sure the diff was a 3.73 unless others know better.
The box will have a 1:1 top gear

[buggalugs]

I'm going for 3.64 and 0.8:1... any advance on that? Diff ratio is on a silver tag round one of the bolts on the rear cover of the diff if you have access to the car.

[Oi_Oi_Savaloy]

I'm not sure what the diff ratio is - they did vary depending on whether you got a diff that was open or an LSD.

You can check if it's an LSD as the ratio on the tag attached to the diff will have an S before it.

[Shropshiremike]

Later Sport versions had a 3.91 LSD

Edited by Shropshiremike on Tuesday 30th June 08:52

[Oi_Oi_Savaloy]

It could be a 3.91 as ShropshireMike says or it might be a 3.64, 3.73, 3.91 or a 4.10.

You'll have to check.

E30zone.net has a wikipedia area that is full of info (just as the website is).