About a year ago I decided to regear my '74 3.0CS it has a 4.10 LSD I found on eBay a 3.07 (maybe not .07 but whatever). The ebay was a big lie, not the claimed ratio not the LSD, nothing right - but eBay got my money back!! Due to that deal I almost sold the car, last week we took an hour and a half ride to look at a Mark II Jag, he was thinking of a trade. After driving his Jag and driving the BMW the 1.5 hours each way I want to keep mt BMW. So, what I've got is a Korman Stage 2 engine with a 4 speed manual and a 4.10 rear. it's real fun to drive but I'm always looking for 5th gear and there isn't one. And cruising around with my wife, It's just kind of raving too high. So, from people who know, what would be the best gear ratio to make it a little less rally car, and a little more regular around town car~ Also where to get one
Looking for gearing opinions
- Thread starter Rod Cole
- Start date
Your 4.10 diff must have come from 69-72 Neue Klasse 2000 sedan as they had a sideloader. I have that in my NK and it is intolerable without a five speed. The 3.07 from an e24 will have very long legs, a 3.25 from a CSi is perfect with a four speed, a 3.45 from an e3 is OK but still turning some RPMs at freeway speeds and a 3.64 from any US e9 will need a five speed tranny. Hope this helps.
There are several diffs listed under the e9coupe parts for sale section for a variety of prices. You may also find some at wrecking yards or FB marketplace near you.
