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Thread: bmw e46 330ci LS3 swap

  1. #1
    Join Date
    Jan 2014
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    United States
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    2003 BMW 540iA

    bmw e46 330ci LS3 swap

    Good Afternoon,

    So I got 2 door e46 and Im planning to swap LS3 motor in it for drifting. For now I only gutted the chassis and will get the cage in next month. I started ordering some parts and started with cooling since mishimoto had good deals over the black Friday.

    now im looking into the fuel system, and im not sure which pattern I wanna go. some people run in tank pumps some exterior.

    assuming I will run this motor <500hp, is there any decent kit I could purchase? I was looking into AEM or DW.

    Also, I got 19x31 mishimoto radiator and im considering Meziere 300 water pump 55gal/min.

    Any input will be appreciated, data sheets, diagrams, build logs.

    Thank You,

    Pat

  2. #2
    Join Date
    May 2007
    Location
    fairfax,va, usa
    Posts
    6,660
    My Cars
    2 E30s and a maxima
    I'm running a walbro mated to the stock pump but Some people run M3 pumps for less than 500whp.

    Status: Someone put glitter in my oil. Wait. Why's all my oil outside the engine? What's that knocking?

  3. #3
    Join Date
    Jun 2015
    Location
    Denver, Colorado
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    1,483
    My Cars
    99 328i, a few more
    check out my build threads, LS3 E36 and LS6 E46. In the 46 I just used an M3 pump, I'm making 420whp with it and it's been good for 4+ years now. In the E36 we did a radium surge with dual 450s but we are shooting for 600-700 on E85 with it.

    - - - Updated - - -

    you're not going to fit the LS3 accessory drive with the radiator in the front I don't think, but the entire F body accessory drive bolts right up. You'll be fine with the stock water pump unless you are just going electric for fun.

  4. #4
    Join Date
    Jan 2014
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    2003 BMW 540iA
    Radiator will be installed in the trunk. it's been planned already.

    as far as the fuel pump, I wanna buy a decent pump since I may add some power later on. plug and play kit would be the best.

    Stock tank is out the car and most likely I will run some 8-10gal tank in the trunk .

  5. #5
    Join Date
    Jun 2015
    Location
    Denver, Colorado
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    99 328i, a few more
    Quote Originally Posted by OrzechNJ View Post
    Radiator will be installed in the trunk. it's been planned already.

    as far as the fuel pump, I wanna buy a decent pump since I may add some power later on. plug and play kit would be the best.

    Stock tank is out the car and most likely I will run some 8-10gal tank in the trunk .
    Radium FCST is the easiest/simplest solution, but not the cheapest. That's what we did in the pro-am e36 and now it's getting moved to the pro2 chassis. Drag style bottom sump cells aren't legal in many series.

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