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| 1987 - 1991 M3 (E30) (1987 - 1991) The E30 M3 was developed by BMW M division to be an upgrade from the E30 3 Series. Using a S14 four-cylinder powerplant (upgraded from the M10) the car was known to be quite powerful and nimble for its time. |
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#1
09-29-2009, 09:21 PM
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Recommended diff for E30 M3 w/ M50 swap
My E30 M3 w/ a M50 swap should be coming back from the paint shop next weekend and will be real close to being back on the road. Getting down to the nitty gritty now.
The car still has the stock 410 diff in the rear. Trying to find the best matching diff to go along with the M50 six cyl. The car will be used as a daily driver first, but will also see some time on Track Days and Auto-X if all goes well. My main concern with the 410 is going to be on the highway. I like the "peppiness" of the 410, but I am not sure how tall 5th gear is. I don't want to be cruising down Interstate 40 at 4500 RPMs at 70 mph. Not to mention the MPGs. I am not sure how tall 5th gear is though. I Also need a LSD for those track days and Auto-Xs as well. Any suggestions? 
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#5
10-04-2009, 02:08 AM
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3.46 on a s38 swap and i love it
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Current:
1999 Bayside Blue Nissan Skyline GTR Vspec 1998 Nissan Skyline GTR GT40R Turbo Project 1997 Technoviolet M3 Sedan GT42R Turbo Project 1990 Viper Red M3 PT67 S38 Past: 1998 Technoviolet M3 Coupe (Sold) 1991 Nissan Skyline GTR (Sold. Owned for 2 weeks lol) 1998 Estoril Blue M3 Precision SC 61 (Blew Motor) 1988 Alpine White M3 (Traded) 1994 Cosmos Black 325is AA C30 Supercharged (Sold) 1988 Schwarz M5 (Sold) 1989 Alpine White 325ix (Sold) 1995 Cosmos Black M3 (Parted Out) 1997 Cosmos Black M3 (T-Boned) 2002 Satin Silver Metallic Acura RSX Type-S (Sold)
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#6
10-11-2009, 02:55 PM
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Well i have m30 cammed in a e30 running a 3.73. What gear box are u running that is important to know for gearing
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#7
10-19-2009, 04:10 PM
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E30 S50 3.46 Loved it. 2.9 after twin turbo, love it.
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#8
12-30-2009, 08:02 PM
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the 3.46 will be nice
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