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aressler35 08-26-2012 07:20 PM

7-series conversion to manual and engine swap?
I want to get a 7-series bmw because I love the body line and overall look of the car. However no 7 series that I know of come with a manual transmission. I know that a 735i was made at one point and some came with a manual transmission but they are hard to find. So it got me thinking if anyone knows if it is possible to convert a 1995-2001 e38 740i to a 725i with a manual transmission using a donor 325i because I want a straight six with a manual transmission and the look of a 7-series. I would put work into the 2.5L engine before doing the swap so I am not concerned about power. If anyone could help let me know. Thanks

First740i 08-26-2012 07:44 PM

You are reading my mind. But i have no clue where to start!!

Sent from my DROID4 using Bimmer App

aressler35 08-26-2012 07:56 PM

Haha yea. Maybe I will have to spend a weekend in a junkyard doing a swap or checking out mounting and stuff. It would be sweet to swap a 2.5L, boost it, and slam it on air. If I can swap I would do that.

drivinfaster 08-26-2012 08:36 PM

the 735i was the last manual 7 series in the us, and was in the e32 chassis. the 4.0 & 5.0 were both autos.

the e38's did not come in the north american market with 6's, or manuals. however, a 95 e38 740i (not the l chassis) can be (and has been) swapped over tp a 6 speed manual from a 5 series. it will fit, and the driveshaft and the rest of the parts are all oe parts, so no 'custom fabrication' would be needed.

there are lots of threads on this on the internet.

swapping out a v8 to run a 6 is silly. your options for this are the m20 (too old...), m50/52 (too slow, just drive a 525 and you'll see...), s50/52 (too expensive to do this sort of swap anyway...why pull out a stock 300ish hp for a smaller inline 6 with about the same horsepower but will need 3x the $ in fabrication/programming for it to work properly), an m30 (less horsepower, about the same fuel economy as a v8)

so in a nutshell, keep the v8, look for a non 'l' chassis, and do a 6 speed swap. a 5 speed may also work, not sure though. i believe the 7's all came with a 6 speed in the euro models.


zheina740 09-03-2012 01:42 AM

Well my 6-speed swap ran me $2200.

In the end it all comes down to how much you really want a 6 speed 7.

JasonSC540ia 09-07-2012 08:26 PM

Youtube has a E38 with E39 M5 6 speed and S62 eng swap.

BigBoy740il 11-25-2012 02:35 AM

Take a look at Their website states that they perform swaps on all BMWs.

BMW 3-SERIES 01-10-2013 02:52 AM

You need 540i transmission. If you find a parting 540i, grab all the stuff from it. Pedal assembly, slave-cylinder, master-cylinder all of it. If you have in iL you'll need a custom driveshaft, otherwise its said that 740i and 540i driveshafts are same. In the end you'll need someone to program your car so your FAIL-SAFE and SERVICE ENGINE SOON lights go away.

Mario_e30 03-26-2015 08:55 AM

Is there any way I'd be able to switch my automatic tranny to manual ? It's a 92 740i m60

Trevor7008 03-28-2015 09:10 AM

M62's only came with 6speeds. There are many threads over on the other forum. Here are 2 of mine......
and this one is where you can start to learn about the process
....and my 6 speed swap that has gotten a little out of hand.

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