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Re: Need more power! (archive)

[ Follow Ups ] [ 7-series (E32) Message Board ] [ Msg. Board FAQ ]

Posted by gale on October 08, 2001 at 20:27:47:

In Reply to: Need more power! posted by Anthony on October 08, 2001 at 19:19:26:

Manual or automatic? Check the tag on the back of the differential cover to get the rear end ratio. Early e32 735i's had a 3.64 for the automatic & I think a 3.25(?) for the stick. Later models (91, 92) changed to a 4.27 for the automatic. They go for $400 to $500 used, should be a direct swap, at worst you'll have to swap the input flange if different driveshaft style. The auto has a .73:1 4th gear ratio. Mine turns 3300 rpm in 4th at 80 mph & runs fine at that speed all day.

I'd do that first, & then go for a performance chip, J.C., Dinan, AutoThority, etc., $250. Even with these mod's it will still be slower than many cars off the line but once it gets up to 3600 rpm or so, you'll be pleased.

92 735i
4.27 & chip'd

Hi I have a 1988 735i and Im tired of this slug! Is the tranny suppose to shift so fast? I know the car weighs over 3,000lbs but its so slow off the start. Im in 3 gear before I hit 40mph, but top end is fine. Is there anything I can do? what about chips? I was racing a 4cyl honda and we were doing 120mph that pretty fast, but he was right there. I felt that was a horrible. To close for comfort, please help!!!

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