1998 360 Magnum cam help

Discussion in 'Mopar Performance Issues' started by wes beem, Apr 11, 2018.

  1. wes beem

    wes beem Well-Known Member

    Messages:
    278
    Likes Received:
    23
    Joined:
    Apr 16, 2017
    Location:
    ohio
    Local Time:
    11:15 PM
    I got a 360 magnum from a 1998 dodge ram with 97K miles on it. Im looking to do a mild build and bump up my power. I'm not looking for anything crazy, i wont be taking it to the drag strip although i might be getting into a bit of trouble around town :D I want to be able to use regular cheap pump fuel and i dont want to kill my mileage TOO badly...Dont want single digits..No point in having it if i cant afford to drive it. Can i get some Cam recommendations? I'm not looking to change my heads or bore it out ext. but i see mopar makes a 360 crate motor that makes 320 from the factory, so i should be able to at least make that?

    I should also add that ill be ditching the fuel injection and running an eddelbrock 4bbl carb intake with shorty headers and electric ignition. I know some folks swear by long tube headers but the roads where i live are way too uneven and have too many unavoidable potholes, i cant have long headders dragging on the ground allover throwing sparks.
     
  2. Lelo Dart

    Lelo Dart *

    Messages:
    1,293
    Likes Received:
    297
    Joined:
    Oct 10, 2012
    Location:
    Knob Noster MO.
    Local Time:
    10:15 PM
  3. wes beem

    wes beem Well-Known Member

    Messages:
    278
    Likes Received:
    23
    Joined:
    Apr 16, 2017
    Location:
    ohio
    Local Time:
    11:15 PM
    its all stock at the moment just as it would have come out of the 98 ram
     
  4. Lelo Dart

    Lelo Dart *

    Messages:
    1,293
    Likes Received:
    297
    Joined:
    Oct 10, 2012
    Location:
    Knob Noster MO.
    Local Time:
    10:15 PM
    Plan on using a electric fuel pump?
     
  5. wes beem

    wes beem Well-Known Member

    Messages:
    278
    Likes Received:
    23
    Joined:
    Apr 16, 2017
    Location:
    ohio
    Local Time:
    11:15 PM
    yep already got electric fuel pump
     
  6. Lelo Dart

    Lelo Dart *

    Messages:
    1,293
    Likes Received:
    297
    Joined:
    Oct 10, 2012
    Location:
    Knob Noster MO.
    Local Time:
    10:15 PM
  7. dusted

    dusted Well-Known Member

    Messages:
    112
    Likes Received:
    66
    Joined:
    Sep 24, 2006
    Location:
    Creedmoor, NC
    Local Time:
    11:15 PM
    I would call Hughes engines. Dave specd a cam for me when wanted to assemble a similar combo
     
    • Agree Agree x 1
    • replicaracer43

      replicaracer43 Old school member

      Messages:
      3,386
      Likes Received:
      1505
      Joined:
      Oct 10, 2008
      View My Photos
      Local Time:
      10:15 PM
      The 320 or 300 HP crate, is nothing but a factory 5.9 Longblock with a carb and intake swap. No cam swap needed to reach those levels
       
      • Agree Agree x 3
      • wes beem

        wes beem Well-Known Member

        Messages:
        278
        Likes Received:
        23
        Joined:
        Apr 16, 2017
        Location:
        ohio
        Local Time:
        11:15 PM
        my motor is making 300 already just cuz of the carb/intake? Factory fuel injection on those must SUCK.
         
      • 72Dart6pack

        72Dart6pack Harder Better Faster Stronger.

        Messages:
        2,106
        Likes Received:
        1289
        Joined:
        Feb 1, 2016
        Location:
        Roseville Michigan
        Local Time:
        11:15 PM
        Dude go fender well headers. Squeeze as much potential power as you can out of that Bad boy!
         
      • hoosierdaddy

        hoosierdaddy FABO Gold Member FABO Gold Member

        Messages:
        230
        Likes Received:
        57
        Joined:
        Nov 13, 2008
        Location:
        Central Indiana
        Local Time:
        11:15 PM
        I have a 360 mag (30 over) on an engine stand and it has the comp 20-604-9 cam and ported iron heads . The motor was supposed to have been dynode but the info I have is sketchy but here is what I have for this combo , 417 hp @ 5500 426 tq @ 4500 . So if these numbers are anything close to real it should be a fun street motor .
         
      • YY1

        YY1 Well-Known Member

        Messages:
        4,845
        Likes Received:
        705
        Joined:
        Oct 11, 2011
        Location:
        FL
        Local Time:
        11:15 PM
        there are two fairly extensive threads on this already.

        one has the limits of the factory head castings RE cam lift.

        IIRC the crate HP numbers are old school "gross" versus the factory installed "net" of the 5.9 at 245, so that unmodified 320 HP crate gross is the stock 245 net.
         
        • Like Like x 1
        • YY1

          YY1 Well-Known Member

          Messages:
          4,845
          Likes Received:
          705
          Joined:
          Oct 11, 2011
          Location:
          FL
          Local Time:
          11:15 PM
          I'll just cut to the point this thread will likely go in 16 more posts-

          "just" stroke it to 416, get a 3500 RPM converter, a solid roller cam, aluminum heads, and put it on the bottle.


          oh, and "agree" on the 512 lift cam
           
          • Agree Agree x 1
          • 318willrun

            318willrun Stomper 4x4... we kept energizer in business FABO Gold Member

            Messages:
            5,690
            Likes Received:
            2944
            Joined:
            Sep 13, 2013
            Location:
            I'm here
            Local Time:
            10:15 PM
            What are you "upgrading" from???

            300 gross would be about correct. Net is 245. And no the FI isn't all that bad either. If you were to put the FI 360 in a 3200 lb car, it would run quite well. My reg cab/2wd 2001 Ram weighs 5000 lbs with no end gate or spare tire. Then add in wind resistance, and the rotating drive train of 9 1/4 rear end, HD Tranny, tight converter, they actually don't do to bad when all this considered.
             
          • wes beem

            wes beem Well-Known Member

            Messages:
            278
            Likes Received:
            23
            Joined:
            Apr 16, 2017
            Location:
            ohio
            Local Time:
            11:15 PM

            I currently have a 318 magnum with the eddelbrock 4bbl carb intake and headers
             
          • 318willrun

            318willrun Stomper 4x4... we kept energizer in business FABO Gold Member

            Messages:
            5,690
            Likes Received:
            2944
            Joined:
            Sep 13, 2013
            Location:
            I'm here
            Local Time:
            10:15 PM
            then you may want to consider some head work along with the cam to completely satisfy what you are hoping to gain. The 360 will offer more, especially off the line, but the 318 mag has the same heads and compression, and a "tad" more cam than the factory 360 mag.
             
            • Agree Agree x 1
            • Lelo Dart

              Lelo Dart *

              Messages:
              1,293
              Likes Received:
              297
              Joined:
              Oct 10, 2012
              Location:
              Knob Noster MO.
              Local Time:
              10:15 PM
              Bet it's right. Mine with no porting runs real good. :steering:
               
            • YY1

              YY1 Well-Known Member

              Messages:
              4,845
              Likes Received:
              705
              Joined:
              Oct 11, 2011
              Location:
              FL
              Local Time:
              11:15 PM
              Stock 165,000 mile 5.9 ext cab 4200# Dakota R/T with 3.92 gear

              Will boil the tires sideways until I let up.
               
              • Like Like x 1
              • Lelo Dart

                Lelo Dart *

                Messages:
                1,293
                Likes Received:
                297
                Joined:
                Oct 10, 2012
                Location:
                Knob Noster MO.
                Local Time:
                10:15 PM
                Ditto
                 
              • dusted

                dusted Well-Known Member

                Messages:
                112
                Likes Received:
                66
                Joined:
                Sep 24, 2006
                Location:
                Creedmoor, NC
                Local Time:
                11:15 PM
                Mopar Action did an article on a JY 360 magnum. I believe they did end up changing the heads (original ones were cracked). They made over 425hp for $2500 and that included the engine. I will see if I can located the article.