94 Dodge ram, 4x4. What trans?

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  1. Cope

    Cope Fusing with fire

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    So the trans went out in spectacular fashion in our shop truck. She let ALL the fluid out in about 5 seconds and has a lot of metal on the drain pan plug.

    Today i got the trans out, not fun as its about 5 feet long and heavy as...

    It looks to be a 727 but im not sure as my experience is only with 904s. So what is the (base model auto) trans? I need to order a rebuild kit.

    Also i thought it would be obvious as to where the fluid came out of but i dont see anything that stands out as the leak. I thought it would be the front pump seal but that is dry?
    Any ideas where it all dumped from? The entire trans is covered, so its hard to tell where the problem was..



    I will be tearing it apart tomorrow and will get some pics of the carnage for ya!
     
  2. oldkimmer

    oldkimmer FABO Gold Member FABO Gold Member

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    If it looks like a 727 it is a 518. Kim
     
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    • oldkimmer

      oldkimmer FABO Gold Member FABO Gold Member

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      Maybe a cooler line? Kim
       
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      • Cope

        Cope Fusing with fire

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        It has a square pan.

        Is there any identity aspects i should be looking for?
         
      • Ddaddy

        Ddaddy I'm changing the World... one pixel at a time! FABO Gold Member

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        It either the 42RH and 46RH transmission. Since it is a 4x4 it is likely the 46RH.
         
      • oldkimmer

        oldkimmer FABO Gold Member FABO Gold Member

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        Is it a 4.7 motor?
         
      • Ddaddy

        Ddaddy I'm changing the World... one pixel at a time! FABO Gold Member

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        They had a factory TSB for failure of the transmission cooling lines causing massive fluid dump.
         
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        • Cope

          Cope Fusing with fire

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          360 Ci.
           
        • oldkimmer

          oldkimmer FABO Gold Member FABO Gold Member

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          So then it’s what Ddaddy said. Kim
           
        • Tooljunkie

          Tooljunkie King of cobble/master of the broken bolt FABO Gold Member

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          94 would most likely be a 360 magnum.
          My 94 has a 360. But its a stickshift.
          Had it about 3 years,still havent done anything with it. Runs nice and drives well. My yard truck.
          I wouldnt tear it out until leak is pinpointed.
           
        • Moparman1806

          Moparman1806 Well-Known Member

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          Be especially careful with taking the overdrive apart. It needs a special tool that has to be used with a press for the overdrive spring.
          That coil spring will take your head off! I guarantee that the overdrive unit will be a mess with the metal in the pan.
          You will also need the special spline tool to align overdrive unit for reassembly.
           
        • j par

          j par Well-hung Member

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          The big question here is it a 2500 or 1500? the 2500s had the bigger axles in the bigger transmission but not the massive transmission that the later diesels and V tens got..
           
        • 1994redram

          1994redram FABO Gold Member FABO Gold Member

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          The over drive is lethal when taking it apart. I found that out and luckily didn't get hurt.

          It will be an A500/42rh which replaced the 904. Or a A518/46rh which replaced the 727. You can tell by looking the pan, the pans have the same bolt pattern as the old 3 speeds they replaced.
           
        • Cope

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          It has no badging. So im thinking its a 1500?

          We got the truck for 400 bucks and tossed most of it in the scrap bin. The only part i haven't upgraded or fixed is the trans.

          Special tools... dammit.. got a part number for those or a place that wont charge an arm and a leg?
           
        • Moparman1806

          Moparman1806 Well-Known Member

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          I will dig mine out to find the Miller numbers, and get back to you
           
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          • 318willrun

            318willrun Utube channel 318willrun

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            5 lug rims 1500. 8 lug 2500
             
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            • Moparman1806

              Moparman1806 Well-Known Member

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              • Cope

                Cope Fusing with fire

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                I want to say its a front 44 and a rear 60 but i cant remember and im not at the shop.


                How deep can i go into the trans before it lets loose and trys to kill me?
                 
              • Moparman1806

                Moparman1806 Well-Known Member

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                You can remove the overdrive case from the trans, it is when disassembling the overdrive that the danger comes into play. The rest of the trans is basically a 727 or 904 in the case of a v6
                 
              • Cope

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                The engine is a V8.
                 
              • Moparman1806

                Moparman1806 Well-Known Member

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                The trans will be a 46rh or A518- both the same, just renamed
                 
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                • SIX225

                  SIX225 Well-Known Member

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                  Thought I read somewhere that there was something special about the gasket between the transmission and overdrive. Something about it acting like a shim and not just a seal.
                   
                • oldkimmer

                  oldkimmer FABO Gold Member FABO Gold Member

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                  There is a shim between the od and the case
                   
                • MOPAROFFICIAL

                  MOPAROFFICIAL Well-Known Member

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                  Make sure to remove the check valve in the cooler lines, they clog and kill the transmission.
                  Do all the updates, turn up the psi, replace manual valve for full flow version that keeps the converter flowing in all
                   
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