What diff is in an '89 325iS Automatic?
Ben
Ben
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4.10lsd i think???
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4.10lsdsigpicComment
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4.10, but LSD was an option. Look for the "s" on the tag on the back of the diff. My diff also has large white "s"s stamped all over it.Comment
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it wasnt an option on the IS model it simply came with one OEsigpicComment
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Yeah, I always thought LSD was standard on an "iS"...Comment
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i had an auto 88 325is parts car and it had a 3.73lsd under it. But that was an 88
1992 BMW 325iC
1978 Chevrolet Monte Carlo1965 Chevrolet Corvair Monza 140hpComment
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The auto we converted to a manual at work had a 3.73 lsd.Comment
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Very interesting. I'll have to get under her tomorrow and see what's in there.Comment
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Should be a 3.73, could be open or LSD. 4.10's didn't come until 1990 I believe.Comment
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my 89is auto i had swapped is 410 lsd.sigpic
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1998 E36 m3/4/5 1988 325i 1989 325iTComment
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Is there a market for the 4.10LSD?Comment
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not so much anymore it seems.
If anyone desires- I've got one FS.
OH, and to help clarify the diff question that this thread has brought up- All E30 325is 5 speeds had 3.73 LSD, Early E30 325is automatics also had 3.73 LSD (up until mid '88 I think) SO all 89, 90, 91 (if there was such a thing) 325is autos will have a 410 LSD from the factory.
Keep in mind that by now many of these have been swapped- I've found all sorts of different (i.e.- not as came from the factory) ratios in cars while looking for diffs.
BretComment
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+1 to everything Bret just said .
Plus I'll add that although the "s" designation meant that LSD was standard on the 6cyl cars it was still only an option on the 318is .
So this means that all "is" or "es" came with LSD as part of the "sport package" but the 318is came with an open diff unless the LSD option was selected .
So true that by now many diffs could/may have been swapped though .
Recently while in a boneyard I came upon a tarted up (read fanboy) 318is and discovered it had an Etas 2.79LSD installed in it .
Can you imagine how slow that thing would have been . :D
Guess the fanboy thought the LSD would be a good upgrade but neglected to inform himself about the actual ratio . :DComment
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