Confused what to do with a 5.9L serpentine setup

Magnum Engine Swaps

  1. black954

    black954 Well-Known Member

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    So i've been working more on my Dart lately and i've hit a big snag. I planned to make my own serpentine brackets and reuse the Dakota RT alternator, water pump, and power steering pump. Unfortunately, I cut up the original brackets to mount everything and now i'm left trying to figure out the best, most economical accessory drive. I can't reuse the Dakota RT PS pump because it is a low pressure pump for rack and pinion. So now i'm looking at piecing together a system. I have the original 340 front cover so I guess I could go that route and run LA accessories, but with the RPM i'm turning I will not run a V-belt system. I was hoping to reuse the magnum balancer I have and if possible the magnum alternator. PLEASE HELP!
     
  2. rumblefish360

    rumblefish360 So close, yet so far away FABO Gold Member

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    March has serpentine pulleys if you want to go that route. (LA engine)
    A junk yard trip can get another Magnum bracket. Then you’ll have to figure out a bolt in pump that is high pressure.
     
  3. Professor Fate

    Professor Fate Push the button, Max...

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    My question would be why not use the RT pump, even if it is "low pressure"? Many people spend the time to drop the pressure in their original pumps anyway to increase road feel and reduce twitchiness, since stock A bodies tend to be overpumped anyway.
    What accessories are you trying to mount, and into what?
     
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    • black954

      black954 Well-Known Member

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      I just saw theirs and I looked at the CVF kit. I'm looking at around a grand all in for either of those options
       
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      • rumblefish360

        rumblefish360 So close, yet so far away FABO Gold Member

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        Wrong kit
         
      • Professor Fate

        Professor Fate Push the button, Max...

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        Fullsize van Magnum brackets give you PS pump clearance for the battery/tray, and Dorman makes an A/C delete pulley if you're ditching the A/C.
         
      • black954

        black954 Well-Known Member

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        I want to run an alternator and power steering pump. I went from a manual steering car to a Borgeson quick ratio PS steering box. I just didn't want to go through all the effort and expense of getting all the components together only to find out the low pressure pump doesn't work with my power steering box. I really didn't like the look or more importantly how high the original alternator was mounted on the stock magnum accessories, plus the PS pump is waaay off to the driver side as well.
         
      • black954

        black954 Well-Known Member

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        The March kit was $688 for the pullies and brackets. Then I have to add a PS pump ($169), an alternator, and LA water pump.

        I just reread your post, and understand what you're saying. Get the March pulleys and source the brackets from the JY
         
      • RammerJammer75

        RammerJammer75 Well-Known Member

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        '01 and later 1500 trucks use a power steering box. You could use a pump off of one of these trucks.
         
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        • MoparLeo

          MoparLeo NRA PATRON LEVEL LIFE MEMBER FABO Gold Member

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          You noted that "at the rpm I am turning I will not use a v-belt system" And you need a high pressure p/s pump. What exactly are you trying to accomplish ? Street/race car ? Too High rpm for a v-belt, but concerned with low p/s pressure ?
           
        • black954

          black954 Well-Known Member

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          I have a street legal road race car with a built 5.9L Magnum and a 4spd in my 69' Dart Swinger. It will see regular 6,500RPM use with occasional 7,000RPM as well. I have a power steering box which requires a high pressure pump, not the low pressure pump that came on a Dakota with rack and pinion. A V-belt just won't survive in this situation. I'm trying to put together a serpentine system that is more compact than the Magnum accessory drive if I can help it. I can run the Magnum accessory drive, but I really would rather not. I also don't want to piece together something now that will end up getting changed out later. I was just hoping there was a budget minded LA serpentine setup that is simple and guys have been successful with.
           
        • black954

          black954 Well-Known Member

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          This is my current setup. I have the magnum timing cover, water pump, and damper with crank pulley.

          574C0476-548B-4B40-A5A7-331D93875D23.jpeg

          7F25D8B6-18A6-4729-B996-2AF224D91B5C.jpeg
           
        • myduster360

          myduster360 Well-Known Member

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          A magnum PS bracket will fit most all Sagnaw p/s pumps. I reused my old 74 360 pump but a new pump would fit too

          rampumpbracketbolts_resized-78716.jpg


          Pro Tip: A Ram & Dakota Magnum PS bracket will interfere with most A body battery trays. But one from a B Van (93-2007) or Grand Cherokee sits the pump a bit lower and avoids the battery tray

          20171008_143819-jpg.jpg
           
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          • rumblefish360

            rumblefish360 So close, yet so far away FABO Gold Member

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            I don’t know what is cheap to you but used Chevy cheap is not available.


            Mine below has seen 7K many times.
            March P/S bracket, Summit Racing Alt. bracket, about dirt cheap.
            54C77908-FED4-4A91-B471-F4E3CB811217.jpeg
             
          • black954

            black954 Well-Known Member

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            This looks perfect, but now that is presenting another problem with the fact that my heads are not drilled with most of the holes that this bracket needs.
             
          • black954

            black954 Well-Known Member

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            This is EXACTLY what I was looking for. Did March sell the PS bracket separate?
             
          • 1994redram

            1994redram Well-Known Member

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            The picture that @myduster360 posted is my car. The van bracket fits perfectly. I have an extra van bracket and pump if your interested. I think I also have a magnum alternator bracket if you want an uncut unit. The salvage yards have PLENTY of magnum powered trucks to rob parts from. The vans can be a little harder to find.

            I'm using a stock used van pump on my dart with a firm feel box and it works great. The power steering seems too "light" sometimes. If I was you, I would try the dakota pump and see how it works/feels.
             
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            • rumblefish360

              rumblefish360 So close, yet so far away FABO Gold Member

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              Yes but I don’t remember the price.
              That which is pictured is what I linked further above.
               
            • triumphman

              triumphman FABO Gold Member FABO Gold Member

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              Someone mentioned the March set up(serpentine). I purchased a March "underdrive" set years ago for my 99 Dakota. That has been sold, but I kept the water pump under drive pulley. I run a Magnum 408, in 75 Dart Swinger and have a 3:91 Sure Grip. Use the original size 75 radiator and it does not over heat. Even at 75 mph @ 98 degrees.
              If the under drive is still available from March or anyone else, It may be your solution.
               
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              • triumphman

                triumphman FABO Gold Member FABO Gold Member

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                FYI: I have a factory magnum mounting bracket that does NOT have the a/c part.
                 
              • black954

                black954 Well-Known Member

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                That is a great setup. After looking at my heads, I don’t have the holes necessary to run that type of PS bracket. Im guessing the March PS bracket with a LA timing cover is going to be my solution. I already have the low pressure pump so I think I’ll go with your recommendation to run it and see how it turns the PS box. Hopefully the 275/35ZR18 Pilot Sport 4S aren’t too much for it.
                 
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                • MoparLeo

                  MoparLeo NRA PATRON LEVEL LIFE MEMBER FABO Gold Member

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                  It sure helps when you give a picture and more information on what you are trying to do.
                   
                • triumphman

                  triumphman FABO Gold Member FABO Gold Member

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                  You can see my 1975 Swinger Magnum serpentine set up on page 9 in the "photo Garages", about halfway down under "Triumphman".
                  All factory, no power steering.
                  Hope it helps.
                   
                • nates68

                  nates68 Well-Known Member

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                  Here’s my 68 barracuda with the van bracket and magnum 5.9 truck brackets on everything else (it’s the ac delete alt bracket). Works great. I did relocate battery to trunk, which I assume you will too with your build.
                  Nates68
                  F5DA3C92-23D0-49F8-AAD1-742F06008964.jpeg
                   
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