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Thread: can i swap a bmw alpina b7 or bmw m5 engine in my bmw 645ci?

  1. #1
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    can i swap a bmw alpina b7 or bmw m5 engine in my bmw 645ci?

    I am thinking about purchasing a wreck Alpina B7 or wreck M5. I was wondering since I have a perfectly good bmw 645ci at home can I do an engine swap. Will the B7 or M5 fit in my 645. I could not find a good B7 or M5 within my budget so I decided to go with my second option to do the engine swap. I been searching the internet for any issues but came up empty. No information about this, only swap are about LS engines, honda, toyotas, volkswagens, and infiniti. Please help.

  2. #2
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    Quote Originally Posted by Gill3398 View Post
    I am thinking about purchasing a wreck Alpina B7 or wreck M5. I was wondering since I have a perfectly good bmw 645ci at home can I do an engine swap. Will the B7 or M5 fit in my 645. I could not find a good B7 or M5 within my budget so I decided to go with my second option to do the engine swap. I been searching the internet for any issues but came up empty. No information about this, only swap are about LS engines, honda, toyotas, volkswagens, and infiniti. Please help.

    You can do anything you want, if you spend enough money.

    IMHO, the reason you can't find anything is that it doesn't really work. You'll be going down a rat hole you can never dig your way out of..
    If I were going to do it, I would do an LS swap, just because then I would have a rock-solid engine that lasts forever, with plenty of cheap parts and upgrade options.

    You say 'perfectly good', that means don't kill it with improvements!

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