A500 42RH Crossmember template?

Transmission and Drivetrain Tech

  1. BigBlockMopar

    BigBlockMopar BigBlockMember

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    Transmission tunnel will always need to be clearanced because otherwise the transmission, and engine (!) with everything connected, will be pointing down at the rear at a larger angle.
     
  2. oldkimmer

    oldkimmer FABO Gold Member FABO Gold Member

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    So then we would have to cut out the top of the torsion bar mount and weld in some flat stock to keep the strength there. Kim
     
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    • jas0162

      jas0162 Well-Known Member

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      I just modified the factory crossmember when I did mine, just used the two outer bolts and reinforced the floor above it after I cut out the whatever hit the trans. Didn’t need to do anything with the floor pan on my 68
       
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      • jas0162

        jas0162 Well-Known Member

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        That’s what I did
         
      • BigBlockMopar

        BigBlockMopar BigBlockMember

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        Yes.
        But also the 'bolt-ears' at the flange between trans and OD-unit will hit the tunnel's sheetmetal.
        Clearancing that is greatly advised.
         
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        • BigBlockMopar

          BigBlockMopar BigBlockMember

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          The original crossmember was stamped sheetmetal.
          While the OD-transmission is a but heavier than a 904 or 727, the crossmember above looks like something designed to hold 20.000 lbs of weight...
          It also seems to extend and hang real low under the car.
           
        • moparmat2000

          moparmat2000 FABO Gold Member FABO Gold Member

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          Looks really great. A guy who just started working at the company I work for has a plasma cam setup. Said he could cut out the pieces for me. He said the pix for the cutter to use had to be formatted a certain way. He gave me a couple different 3 letter formats that his plasma cam could use. Which one is your drawings in ?? What thickness steel did you make this out of. I have a sheet of 3/16" steel I planned on using.
           
        • Danizanon

          Danizanon Well-Known Member

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          Dwg or dxf
           
        • 1965fish

          1965fish Well-Known Member

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          Following.
          Mine will be for an early A body.
           
        • moparmat2000

          moparmat2000 FABO Gold Member FABO Gold Member

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          I wrote down the 3 different ones he said his plasma cam understands, I think he said both of these but will check. Have you tried this under your car yet?
           
        • Danizanon

          Danizanon Well-Known Member

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          Mine is a dart 68
           
        • 1965fish

          1965fish Well-Known Member

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          Different patterns. I will have to make more modifications.
           
        • TrailBeast

          TrailBeast AKA Mopars4us on Youtube

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          The spool mount was a lot easier to modify, but it does extend a little lower than the biscuit type.
          The only place in the floor I had to mod was the hump brace and a 1inch round by .5 inch deep dent in the floor where the fitting off the governor port is for the pressure switch's line fitting.
          Inside the car that dent is a very small hump between the seats. (not noticeable at all under the carpet even if you know where it is)

          crossmember.jpg
           
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          • moparmat2000

            moparmat2000 FABO Gold Member FABO Gold Member

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            Any new updates on this?
             
          • moparmat2000

            moparmat2000 FABO Gold Member FABO Gold Member

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            Anybody else ever template one of these cross members out?
             
          • kursplat

            kursplat FABO Gold Member FABO Gold Member

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            do you have any installed pics?
             
          • TrailBeast

            TrailBeast AKA Mopars4us on Youtube

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            No I don't, sorry.
            Taking pics wasn't a priority during getting my daily driver back up and running.
            I might be able to do that when I swap rear ends though.
             
          • Shermdog

            Shermdog FABO Gold Member FABO Gold Member

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            I'd also be interested in the CAD files if they ever became available.
             
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            • 65 Dartman

              65 Dartman FABO Gold Member FABO Gold Member

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              The early A will be different than the 67-later since the upper crossmember is not as wide as the later cars which means the lower trans support is also not as wide. Here is the start of a modified upper crossmember I’m working on for my 65

              ED1F2ADB-28DC-4693-A454-7ABCF5DE9197.jpeg
               
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