Diffs again....
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- Posts: 1058
- Joined: Tue Jan 06, 2009 3:50 pm
Diffs again....
If I take out the diff(3:64)in my 76 530i with a 5 speed and put in a diff(3:45) from a 77 530i auto how does it change things in terms of losing or gaining acceleration and also gearing for highway cruising?
1976 530i. BMW 59 Triumph TR3A(rolling resto). 67 Triumph TR4A(salvageable). 86 900S Winter car
Re: Diffs again....
You would lose a bit off the line, and at all speeds actually, and drop the revs 150 RPM or so at 100k. With a 4 speed I would want a 3.45, with the 5 speed I'd leave the 3.64 in place. Your speedo will also be off by 5.5%.
Mike W.
1980 528i, 3.5 euro, 5 speed conversion
1981 528i, 3.6, Recaros and more. Project
1998 328is, quick and efficient, but not satisfying
2000 528iit, Vacation mobile/wife's grocery getter
1980 528i, 3.5 euro, 5 speed conversion
1981 528i, 3.6, Recaros and more. Project
1998 328is, quick and efficient, but not satisfying
2000 528iit, Vacation mobile/wife's grocery getter
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- Posts: 1058
- Joined: Tue Jan 06, 2009 3:50 pm
Re: Diffs again....
Thanks Mike
1976 530i. BMW 59 Triumph TR3A(rolling resto). 67 Triumph TR4A(salvageable). 86 900S Winter car