5.9 magnum with M122 blower/intercooler

Forced Induction Mopar

  1. frosty_the_punk

    frosty_the_punk Well-Known Member

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    Hey guys.
    Been working on this for a while now, still a long way to go but it's starting to take shape.
    Thought I'd share some pics I took recently.

    (Edited for more info below)

    The Blower and intercooler are both from an 07-12 Ford GT500 5.4L, these blowers are capable of supporting about 600hp on E85.

    The intake manifold is a factory kegger which I modified myself to allow room for the intercooler. I cut the top off the manifold manually with a hand saw I made for performing a horizontal cut.

    I will try to get pics of the inside of the manifold.. a LOT of material was gutted using air tools. The runners are almost non-existent now unfortunately.

    The Crank pulley is a Vortech "universal" (does not fit mopar) 10-rib unit, it measures 7.8" diameter.
    This is the largest possible pulley I could use while still clearing the magnum water pump pulley.
    I had to fill the existing holes and redrill to suit the mopar dampener bolt pattern.

    The supercharger snout is from a pontiac Grand prix GTP M90 as the GT500 snout was too short. It has 8 bolts instead of 7 and will need to be welded and redrilled.

    The blower pulley is an Edelbrock piece that is made for their 10-rib E-force superchargers and measures 2.625" diameter. These are by far the most affordable 10-rib blower pulleys I could find. (I also have them in 2.75", 3.0" and 3.25" so I can turn the boost up/down)

    The blower pulley is mounted on a 4-bolt hub that I made by machining down a factory steel press fit pulley in a lathe then drilled/tapped.

    The spring loaded tensioner and idler are both from a Cummins ISX 12L diesel. Perhaps excessive. (you can't do too much to eliminate belt slip with a serpentine)

    The tensioner is mounted on a 6 bolt bracket that can be rotated to adjust the position of the arm in small increments. (Just like adjusting a cam gear for more advance/retard)
    This should be useful for adjusting preload, blower pulley diameter changes or to compensate for any belt stretch.

    All the aluminium blower and accessory plates were machined using a makita wood router and single flute carbide bits, either freehand or using timber jigs.

    I will be running a tank of water in the boot to feed the intercooler. to save on cost I will be using a mechanical belt-driven water pump from a jag AJ6 engine mounted as an accessory instead of an electric pump.
    This should hopefully outperform most electric pumps at a fraction of the price anyway.

    The engine itself is currently stock as a rock.
    I'm tempted to gap the rings, upgrade the valve springs, install some MLS head gaskets and see how it responds.

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    Last edited: May 14, 2022
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    • MopaR&D

      MopaR&D Nerd Member

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      That's the biggest one Eaton made, right? I have an M90 on the 3800 V6 in my Park Avenue Ultra. I gutted the baffles out the of the stock air box just so I could hear the whine when I get on it lol. I was thinking of dropping down a pulley size but with how gas is now I don't find myself getting into the boost very much.
       
    • 408 swinger

      408 swinger FABO Gold Member FABO Gold Member

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      Looks like you modded the factory beer keg intake? Nice!
       
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      • RustyRatRod

        RustyRatRod I was born on a Monday. Not last Monday. FABO Gold Member

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        An intercooler built into the intake? That's badass man.
         
      • MiradaMegaCab

        MiradaMegaCab Well-Known Member

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        @frosty_the_punk
        Nice build!
        Can we have more details?
        What manifold is that?
        What crank pulley and how many ribs?
        What CR, pistons, head gaskets?
         
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        • replicaracer43

          replicaracer43 Grumpy Old Man

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          That's some seriously cool thinking outside the box!
           
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          • 360duster

            360duster Well-Known Member

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            pretty cool setup! you plan on running some kind of ice box in the trunk i think?

            Michael
             
          • Matts440

            Matts440 Well-Known Member

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            That looks like its gonna be a lot of fun. Great job on the progress so far. Looking forward to seeing it all come together more.
             
          • 67Dart273

            67Dart273 FABO Gold Member FABO Gold Member

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            What if any was the M122 used OEM?

            And yeh, we need "more on this"
             
          • TT5.9mag

            TT5.9mag Two atmospheres are better than one

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          • TT5.9mag

            TT5.9mag Two atmospheres are better than one

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            Cadillacs, gt500 mustangs, and NOT (edited) ford lightning. There may be others.
             
            Last edited: May 13, 2022
          • Turbosmblk

            Turbosmblk Member

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            Lightning came with an M112. They are less efficient than the 122 you have. They just make heat after roughly 450whp. Still decent blowers though
             
          • TT5.9mag

            TT5.9mag Two atmospheres are better than one

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            My bad. You’re correct.
             
          • frosty_the_punk

            frosty_the_punk Well-Known Member

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            Edited original post with more info.
            Will try to keep this updated, any questions always welcome.
             
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            • 408 swinger

              408 swinger FABO Gold Member FABO Gold Member

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              On the cheap, using what's out there. Love it! Keep us updated!!!!
               
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