3-Series (E21, E30)Chat relating to the BMW 3-Series from 1975-1983 and 1984-1991 line. Specific models: BMW 315, BMW 316, BMW 318, BMW 318i, BMW 320/4, BMW 320i, BMW 320/6, BMW 323i, BMW 320i. E30 Family models include: BMW 325e, BMW 325i, BMW 325is, BMW 325ix.
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Hello to all, happy to find this forum. I have managed to put 4.0 ltr V8 in my e30 Baur but not sure about the diff. Can any one help me if the diffs from Z3 or Z4 could be used in e30 rear subframe. As I understand Z3 subframe is the same as e30 but I am not sure if the Z4 rear subframe is same or if the diff from Z4 can be used for my e30.
Any help will be highly appreciated.
Regards, Max.
I'm not sure which diffs will fit, but AFAIK the Z4 subframe is likely to be different since that model marks the shift to multilink (as opposed to semi trailing arms like on the E30) rear suspension in the Z series.
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Z3 / Z4 diff in E30 
but not sure about the diff. Can any one help me if the diffs from Z3 or Z4 could be used in e30 rear subframe. As I understand Z3 subframe is the same as e30 but I am not sure if the Z4 rear subframe is same or if the diff from Z4 can be used for my e30.
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