V Belt on Magnum are my thoughts clear

Magnum Engine Swaps

  1. Mgarrett88

    Mgarrett88 Active Member

    Messages:
    40
    Likes Received:
    30
    Joined:
    Aug 11, 2019
    Location:
    Michigan
    Local Time:
    7:11 PM
    Hello all
    Newbie here, doing a lot of reading and I think from what I have read on this site, as well as seen in multiple videos I am ok but want to ask the question anyway.

    I have a 72 Scamp 318/904 that I am looking to do the Magnum swap in.
    Already have the Magnum stripped down in the garage.

    With that being said I would like to keep the VBelt LA look on the car.
    Here is my plan and questions I have.
    I am not building a race car, just a fun driving, reliable street car so BIG HP is not necessarily the must have. The Magnum Swap website car build is about what I am going for maybe even a bit more tame, no thing crazy.
    Heads-undecided, more than likely I will pay the bigger bucks and go with the Edelbrock heads but my builder said even for my requirements the new EQ heads would work since my HP demand is not through the roof.
    Intake-Edelbrock RPM air gap
    Mechanical Fan
    Plan to use LA timing cover from the 318 on the 5.9 magnum.
    I am not running AC.
    Question- Will my alternator and power steering pump from the 318 LA bolt up and line up properly?
    I assume from what I am reading it will.
    My magnum has the 1 piece balancer, so I know i will need to buy an aftermarket balancer that I can then bolt on the V Belt pulley.
    Can I use the pulley off of the LA on the new balancer?
    Looking for guidance and some confirmations
     
  2. motorpirate

    motorpirate serial mopar owner

    Messages:
    615
    Likes Received:
    417
    Joined:
    Nov 4, 2007
    Location:
    northern KY
    Local Time:
    6:11 PM
    YUP, WILL ALL BOLT UP. 1 HOLE IN THE CRANK PULLEY WILL NEED OVALED OUT BUT THAT IS ALL. 20190709_114425.jpg
     
    • Like Like x 2
    • MoparLeo

      MoparLeo NRA BENEFACTOR LEVEL LIFE MEMBER FABO Gold Member

      Messages:
      848
      Likes Received:
      601
      Joined:
      Feb 10, 2016
      Location:
      Moreno Valley, Cal. So. Cal.
      Local Time:
      4:11 PM
      • Like Like x 1
      • wanta68cuda

        wanta68cuda Well-Known Member

        Messages:
        533
        Likes Received:
        91
        Joined:
        Jan 30, 2008
        Location:
        Cartersville,Ga
        Local Time:
        7:11 PM
        The answer to your questions is yes. I did this swap also in my Scamp your also gonna need LA 340/360 motor mount brackets. Listen to your builder and go with the EQ heads don't waste the money on Edelbrock's you can use that extra money somewhere else on the car like a good electric fuel pump ect. Good luck with your swap you'll love the end result.
         
      • Mgarrett88

        Mgarrett88 Active Member

        Messages:
        40
        Likes Received:
        30
        Joined:
        Aug 11, 2019
        Location:
        Michigan
        Local Time:
        7:11 PM
        Yup good to go on the motor mount brackets.
        Good to know that my thoughts were correct. I am gathering parts right now.

        Ne EQ heads are not a performance head but for a mainly stock 5.9 with a cam upgrade he said that the new EQs with some extra work on their end (polish and porting), that it will be fine for a fun reliable cruiser. I doubt this car will see any track time. Just fun on the back country roads pretty much.
        Going to do some more research and talking for sure.
        Thanks for the response

        Anymore information on your swap? Snags you ran into or things to look out for?
        I am going to rebuild and use the 904, and i have a 8 3/4 housing and 489 case that needs to be built up as well replacing the 7-1/4.
         
      • TrailBeast

        TrailBeast AKA Mopars4us on Youtube

        Messages:
        21,685
        Likes Received:
        9543
        Joined:
        Mar 11, 2011
        Location:
        Arizona
        Local Time:
        4:11 PM
        You will probably need to grind off one of the bosses on the drivers side of the block, as it interferes with some headers.
        Test fit after the heads are on and before the motor goes in and you will see it.
        Also if using the stock 904 converter you will need the magnum flex plate for the right balance unless you buy aftermarket.
        One bolt hole in the factory flex plate also needs egged out about 1/8 inch to line up with the stock 904 converter bolt holes.
        You can even run stock or aftermarket LA valve covers on the magnum or EQ heads, as the 5 LA bolt holes are in the same place as 5 of the bolts on the magnum heads.
        I’m running fabricated aluminum LA covers with the nice OE silicone gaskets from the magnum.
        I did space my power steering pump forward about 1/8 inch, but that just involved a couple of washers between the block and bracket.
         
        • Thanks! Thanks! x 1
        • Mgarrett88

          Mgarrett88 Active Member

          Messages:
          40
          Likes Received:
          30
          Joined:
          Aug 11, 2019
          Location:
          Michigan
          Local Time:
          7:11 PM
          Got the Flex Plate off of the Magnum that I bought. I made sure of that when I started this process.
          I just wanted to make sure that my continued thought was correct on VBELT set up with my plan at this time.
           
          • Like Like x 1
          • 66fyssh

            66fyssh Don't Stop Believin' FABO Gold Member

            Messages:
            6,363
            Likes Received:
            6014
            Joined:
            Jun 22, 2013
            Location:
            Northwest GA
            Local Time:
            7:11 PM
            All great information above!

            I sent my Magnum cam to Oregon Cam Grinding for a regrind, which meant I would need an electric fuel pump. Then used a 70 ish (?) timing cover and blocked off the fuel pump hole.

            Then I used everything else off my LA: water pump, power steering pump, fan and all v-belt pulleys.

            The only issue is with the Magnum timing marks. Magnum engines have the timing marks on the drivers side. The later timing cover also has drivers side timing marks so the marks work with the harmonic balancer marks. BUT, the earlier water pump with the drivers side output makes it difficult to see the marks. I painted a line on the cover, and three lines on the harmonic balancer (TDC, 20, and 36) to help. Some time, I'm going to fabricate a pointer on the passenger side. Lots of room there.

            Keep us posted on your build.
             
          • wanta68cuda

            wanta68cuda Well-Known Member

            Messages:
            533
            Likes Received:
            91
            Joined:
            Jan 30, 2008
            Location:
            Cartersville,Ga
            Local Time:
            7:11 PM
            Go to Magnumswaps.com and read up on what they've done it's full awesome tech and swap info and a lot of parts you're gonna need. I used the 904 also so you're gonna need the magnum flex plate and a neutral torque converter for it to work together. If you read the website it'll tell you that you gotta drill out one bolt hole a little oblong for all the bolt holes to match up. Also you'll find the harmonic balancer your gonna need for the LA pully to work. As another has stated if your using headers you will have to grind off one of the bosses on the passenger side. Do yourself a favor and test fit them on the stand and do the grinding there. Ask me how I know LOL. Believe me you don't want to do it while it's in the car.
             
          • Mgarrett88

            Mgarrett88 Active Member

            Messages:
            40
            Likes Received:
            30
            Joined:
            Aug 11, 2019
            Location:
            Michigan
            Local Time:
            7:11 PM

            yea Headers will be the next issue i face. I dont want to spend a ton of cash on nice headers just to have to dent them up. I dont have an issue purchasing the Dougs or TTIs as long as they fit and i dont have to beat on them. I am running power steering in a 72 scamp. Any thoughts as to which ones would fit better? I know I will have to grind the bosses thats fine just dont want to dent the headers.
            Anyone ever use these?
            Small Block Tri-Y Headers
             
          • Brooks James

            Brooks James Dustoff

            Messages:
            1,311
            Likes Received:
            649
            Joined:
            Dec 12, 2020
            Location:
            Fruitland Park Fl
            Local Time:
            7:11 PM
            Magnumswaps.com
             
          1. This site uses cookies to help personalize content, tailor your experience and to keep you logged in if you register.
            By continuing to use this site, you are consenting to our use of cookies.