Confused what to do with a 5.9L serpentine setup

Magnum Engine Swaps

  1. nates68

    nates68 Well-Known Member

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    Oh and my noisy borgeson box was over boosted with the van pump. I put in a 2.0 gph flow control valve from jegs. It’s better but still a bit light even with 7 degrees of caster!
     
  2. black954

    black954 Well-Known Member

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    I love your set up and that's exactly what I want. Unfortunately with LA heads, I don't have the required holes to bolt up the Magnum stuff anymore. I am kinda stuck converting to a LA timing cover/water pump so I can run the LA serpentine stuff that bolts to the water pump.
     
  3. 1994redram

    1994redram FABO Gold Member FABO Gold Member

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    The magnum bracket bolts to the head and water pump. I doubt the water pump alone is enough. But that will help locate and hold it while you modify the bracket to bolt to LA heads. The bracket is aluminum, it shouldn't be too hard to move a few bolt holes.

    The power steering will be a little trickier. But I think its worth it. The magnum alternator alone is worth it!
     
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    • black954

      black954 Well-Known Member

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      I'm going to try and see what I have to do to make the Magnum stuff work. I already have the timing cover, water pump, alternator, 2 piece balancer & pulley, and R&P pump. It would be huge If I could make the van PS bracket work
       
    • nates68

      nates68 Well-Known Member

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      You will need to either internally regulate the magnum alternator (what I did) or use a electronic mopar one.
      The diesel truck guys have been internally regulating because the factory harness has it in the ecu and it fails. There’s a kit, I can’t recall the part number.
      Nates68
       
    • black954

      black954 Well-Known Member

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      I have a new regulator and harness from Ron Francis so that will cover the Magnum alternator. Can you post up some more pics of your alternator bracket. It looks like the one you have doesn't have the AC mount on it and is nice and clean looking.
       
    • black954

      black954 Well-Known Member

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      Well I wanted to give a little update. I was able to locate a van PS bracket and got everything mocked up. I really like this setup and I think this is the way I will move forward. Only big drawback is I need to mark, drill, and tap 2 holes in the front of each cylinder head. Plus I need to trim my valve cover and weld in a plate for alternator clearance. I appreciate everyone's input!

      serp1.jpg

      serp2.jpg

      serp3.jpg

      serp4.jpg

      serp5.jpg
       
    • MOPAROFFICIAL

      MOPAROFFICIAL FABO Gold Member FABO Gold Member

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      You can just buy a shorter serpentine belt that goes right under the a/c pulley to bypass it, then lop off that part of the bracket that mount the ac pump all together. If you have an air pump too, ??, you'll have to figure a similar plan.
       
    • black954

      black954 Well-Known Member

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      That's exactly what I did in the pic. There's a missing idler pulley above the water pump that the belt will go under before going to the PS pump. It will use a factory belt as well going this route.
       
    • triumphman

      triumphman FABO Gold Member FABO Gold Member

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      FYI: I have an idler for the Magnum if you need one.
       
    • black954

      black954 Well-Known Member

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      Thank you for the offer. I actually just pulled it out of the old parts pile from the tear down from the magnum. My tool and die buddy stopped by last night and we have a pretty good plan. He’s going to machine a 1” template off the hole spacing on the iron magnum heads to use to layout and drill the holes into the LA heads so everything bolts up correctly. I’ll keep everyone updated with the progress.
       
    • Slantsix64

      Slantsix64 Well-Known Member

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      Set it up the old school way, serpentine style doesn’t look cool in a classic car!
       
    • triumphman

      triumphman FABO Gold Member FABO Gold Member

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      Click on my photo. This is my serpentine set up. Mostly factory from a 99 Dakota, less the power steering. Also, use an underdrive pully on the water pump. I run a 3.91 sure grip and at 75 MPH engine stays a 180.
      Not trying to influence you, just showing an end result.
      Good luck with it all.
       
    • black954

      black954 Well-Known Member

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      I just looked it up and your engine is CLEAN, looks great! I'm glad others have made the truck serpentine set-ups look good. Most Magnum serpentine setups looks bulky and out of place on an A-body. I will hopefully make mine look as clean as yours and others.
       
    • black954

      black954 Well-Known Member

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      I would tend to agree if I were building a cruiser. But my car will be a high RPM road car and V-belts just wouldn't last long at all. I'm just glad I'll be able to finish my accessory drive with the parts I already have plus the van PS bracket I bought. Sometime function can look as good as form if done right. Plus most classic car guys won't like my car when I pull up with fat 18" wheels so I don't need to worry about them seeing my engine lol.
       
    • Slantsix64

      Slantsix64 Well-Known Member

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      Hahah that’s a good point lol
       
    • nates68

      nates68 Well-Known Member

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      On that valve cover, a socket hit with a hammer made a nice u shape spot for clearance. I have the same ones, just put a thick rubber boot over the connector as well.
       
    • black954

      black954 Well-Known Member

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      Thats not a bad idea. Can you post up a pic please.
       
    • nates68

      nates68 Well-Known Member

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      1951337E-92FC-485B-9CE4-B3EB161F75AF.jpeg It’s pretty close but it would have to take a bracket failing or something major for it to hit, plus the rubber cover makes it look closer. I was concerned the weld would pull apart but it was fine. I have used the same technique on header clearance issues, looks cleaner than the sledgehammer method!
       
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      • black954

        black954 Well-Known Member

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        Thank you, that looks really clean and barely noticeable. I think this is the best route and how I will move forward.
         
      • JoesEdge

        JoesEdge Well-Known Member

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        @nates68 Do you know the length or part number for that belt? Thanks!
         
      • nates68

        nates68 Well-Known Member

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        will take a look tonight
         
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        • nates68

          nates68 Well-Known Member

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          E780160D-C909-4E26-A5EB-FED8AE2F2BBA.jpeg 7k905 is what the belt has marked.
           
        • JoesEdge

          JoesEdge Well-Known Member

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          Awesome!! Thanks!! I like the dipstick handle bullet casing. Nice touch!!
           
        • Orionsax7

          Orionsax7 Well-Known Member

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          @black954 Any more updates on the magnum accessories? I also have a 5.9 right now at IMM and am using the aluminum LA heads they offer. Was planning on also using the magnum accessories so I'm watching this thread like a hawk! TIA
           
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