5.9 Magnum Question

Discussion in 'Small Block Mopar Engine' started by mopardug, Jan 10, 2017.

  1. mopardug

    mopardug Well-Known Member

    Messages:
    102
    Likes Received:
    7
    Joined:
    Sep 14, 2012
    Location:
    Central KY
    Local Time:
    4:44 PM
    I have another stupid question lol. Sometime in the past I was told that either '99 or 2000 5.9's were different from the earlier years. Something about the crank snout or maybe the balancer was different and earlier (common) parts wouldn't work. The person also told me that those newer 5.9's weren't worth having. The engine in question was out of a '00 1ton van. Is this another case of a mental midget? Or is there something to this? P.S. I went back an even 13 pages and didn't notice a topic like this. Thanks for looking.
     
  2. Lelo Dart

    Lelo Dart *

    Messages:
    1,032
    Likes Received:
    173
    Joined:
    Oct 10, 2012
    Location:
    Knob Noster MO.
    Local Time:
    3:44 PM
  3. rumblefish360

    rumblefish360 so close yet so far away

    Messages:
    28,649
    Likes Received:
    2059
    Joined:
    Jun 21, 2005
    Location:
    New York, on a Island
    View My Photos
    Local Time:
    4:44 PM
    Yes, mental midget-ism.

    Some do not like the pedestal mount rockers and cringe that a Chevy rocker can be used. The port flow on the Magnum head is an argumentative point on "Is it better than an LA head?"

    Earlier Magnum engines?

    I guess it all depends on what you want to do, what cost is involved for your wallet and what your willing to live with.

    There are pro's and con's to each engine family. A, LA, Magnum. I'm making use of a '00 , 5.9 in my '79 B body. With the serpentine belt. No fuel pump eccentric so I used a Edelbrock electric carb pump. A B&M flexplate to mate it up with a neutral converter & 727, RPM-AG, AVS Thunder 650 & Super Comps. No cam yet. 3.55's out back.

    Works great for me!
     
  4. Abodybomber

    Abodybomber Pushing Mopars since 1991

    Messages:
    28,568
    Likes Received:
    7103
    Joined:
    May 21, 2011
    Location:
    Arroyo grande ca
    Local Time:
    1:44 PM
    I was handed a 2000 Magnum,for free... even the service replacement heads,were toast,the roller cam,had three flat lobes...Ended up with EQ heads,the Crane cams,stud set up, and 1.5 Comp Cams Chev rockers...I like valvetrain adjustability,on my stuff...
     
  5. 73AbodEE

    73AbodEE I'm hungry

    Messages:
    15,143
    Likes Received:
    1133
    Joined:
    Oct 16, 2011
    Location:
    Down the road
    Local Time:
    3:44 PM
    Tim , how does a roller lifter eat a cam, no oil ? High miles?
     
  6. Abodybomber

    Abodybomber Pushing Mopars since 1991

    Messages:
    28,568
    Likes Received:
    7103
    Joined:
    May 21, 2011
    Location:
    Arroyo grande ca
    Local Time:
    1:44 PM
    Lance,higher mileage...cast iron core..196 k on mine,still had crossshatch on bores....
     
    • Thanks! Thanks! x 1
    • TrailBeast

      TrailBeast Slightly Twisted Member

      Messages:
      16,638
      Likes Received:
      2912
      Joined:
      Mar 11, 2011
      Location:
      Arizona
      View My Photos
      Local Time:
      1:44 PM
      Did about the same as Abodybomber.
      Mine had about 90k on it and cylinders and bearings, looked near new but the heads were cracked on all four corner cylinders right between the valves.
      EQ heads, Hughes springs and retainers, stock magnum rocker gear on mine, custom regrind LA style roller cam with a Carter rotary vane pump and full circulating fuel system.
      The Magnum has a great bottom end that lasts a long time, but the heads are the weak point in them.
      The relatively inexpensive EQ Magnum heads solve that problem and flow well right out of the box. (about 230cfm)
       
    • gtsdude

      gtsdude Well-Known Member

      Messages:
      711
      Likes Received:
      101
      Joined:
      Jan 10, 2010
      Location:
      SE MN
      Local Time:
      3:44 PM
      I believe 99 or 2000, not sure when they made the switch, but the balancer and crank pulley are one piece on the newer ones and older ones have a crank pulley that bolts on to the balancer. Not a big deal if you are using the serpentine set up. If switching to LA front and pulleys just need an older style balancer. Other than the balancer not much changed.
       
      Last edited: Jan 11, 2017
    • mopardug

      mopardug Well-Known Member

      Messages:
      102
      Likes Received:
      7
      Joined:
      Sep 14, 2012
      Location:
      Central KY
      Local Time:
      4:44 PM
      Thanks everyone! And Lelo, that article was very informative.