Cam options for a 380hp 360 crate motor

Magnum Engine Swaps

  1. joes68340s

    joes68340s Well-Known Member

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    Just wondering if people with this crate motor have found a better cam.
     
  2. Rolling_Thunder

    Rolling_Thunder Rolling Thunder

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    The term "better cam" is very subjective... depends what you are looking for that make it "better"... I had the 300hp crate engine years ago and the 380hp version had a much better camshaft profile - you can swap in any roller cam for an LA so your options are pretty limitless these days
     
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    • rumblefish360

      rumblefish360 So close, yet so far away FABO Gold Member

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      What is it you don’t like about the cam?
      What is it tour looking for over what you have?
      Do you feel that there is a short coming to the cam?
      Where would you like to improve the engines performance?
      What trans, rear gear and tire size are on the car?
      Cars weight, stall converter, if it applies?
       
    • 67Dart273

      67Dart273 FABO Gold Member FABO Gold Member

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      !!!WELL!!! This seems to have been a short thread!!!
       
    • joes68340s

      joes68340s Well-Known Member

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      67 Valiant built for autox, track days. Stock 380 hp crate motor. 4 speed 3.55 gears. Car weight 3250 tires 285x35x18.
       
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      • Johnny Dart

        Johnny Dart Well-Known Member

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        Any idea in what cam is in it now ?
         
      • rumblefish360

        rumblefish360 So close, yet so far away FABO Gold Member

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        He said stock create engine so that would be the MP Hyd. roller cam, 288/292 ... I forget.... low .500’s in lift..

        @autoxcuda could be of a bit help here since he auto crosses is car. He (IIRC) uses a solid flat tappet cam a good bit smaller. If you run at a track you could perhaps discuss the cam needs on such course(s)

        My direction would be for a smaller cam for more torque.
         
      • autoxcuda

        autoxcuda Well-Known Member

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        Troy sold a ton of those at the old Westoaks Mopar Performance.

        He said they weren’t great down low, but made good peak numbers (marketing) for a low compression 9.0:1.

        Most people put them in cruiser type cars, but picked the 380HP because of the high HP number (marketing was right) But they were not a motor you could slap parts on without tuning and drive to the grocery store without any additional effort.

        Typical 380HP buyers would have been happier with 320HP version. Eyes bigger than their stomach syndrome.

        They were a little rough idle, not cold start friendly, and took carb and combination tuning to make them flawlessly around town stoplight friendly.

        Honestly, my 416 stroker has too much torque down low and wipes out the rear tire in autocross. It doesnt help for smooth driving. One of the reasons I put a M1 single plane in it.

        But the higher rpm HP on that 380HP crate would be great at the track. A more modern cam swap focused on area under the curve could be if help.

        I look into custom cam person because of the low compression and specific intentions.

        If it’s weak, it’s out of tune or hurt.
         
        Last edited: Nov 10, 2020
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        • joes68340s

          joes68340s Well-Known Member

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          I only asked about the cam as thought maybe there were people still running them, crate motor that is. I have a 390 stroker set up for 4 speed. Will be installing. Just wondered about cam for another project.
           
        • autoxcuda

          autoxcuda Well-Known Member

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          I think it’s a good question. I think there’s potential in a cam swap.
           
          Last edited: Nov 11, 2020
        • RustyRatRod

          RustyRatRod Bla de blizhibliz de blatde blizi bla bla FABO Gold Member

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          It's a pretty well match package. I'd run it like it is.
           
        • Jadaharabi

          Jadaharabi FABO Gold Member FABO Gold Member

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          If you take the 300 horse motor which has a stock 5.9 cam in it and you put in the 380 horse cam and change the intake and it gives you 80 more horsepower I would say the cam is working pretty good.

          Just My humble opinion which I personally highly value.
           
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          • 75slant6

            75slant6 Well-Known Member

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