fan shroud won't fit

Heating / Cooling / AC

  1. cudajim

    cudajim cudajim

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    I have a 67 Barracuda with a 318 engine, factory radiator and shroud. The shroud fits the radiator just fine but the 7 blade fan hits it on the passenger side. It's way off by at least 1.5". It used to all fit when I had the 273 engine in there. I don't know what's off. I'm thinking possibly motor mounts are installed wrong but everything about the motor seems right. The exhaust fit correctly and everything is lined up as it should be. The reason I want the shroud is because the engine runs warm so I'd like to try it to see if it makes a difference. I don't know what else to check.
     
  2. moparmandan

    moparmandan FABO Gold Member FABO Gold Member

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    Shroud upside down? Wrong shroud, got mixed up somewhere? Just grasping.
    1.5" is a lot........
    Shroud should have a part number on it.
     
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    • Mike69cuda

      Mike69cuda 64 is the new 17 FABO Gold Member

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      Mopar shrouds are offset about exactly that much. The engines (on A bodies at least) sit about an 1 1/2 Inches off center to the passenger side.
       
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      • cudajim

        cudajim cudajim

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        It can only mount one way, I tried it upside down... no way. Here's pics
        7blade.JPG shroud1.JPG
         
      • Cuda Al

        Cuda Al Well-Known Member

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        What is the number on the shroud?
        What is the radiator number?


        Thanks,


        Alan
         
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        • ch1ll

          ch1ll FABO Gold Member FABO Gold Member

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          Radiator mounted correctly?
           
        • cudajim

          cudajim cudajim

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          The shroud number is 2582037
           
        • cudajim

          cudajim cudajim

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          Yes, it only matches up to the 4 holes
           
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          • Cuda Al

            Cuda Al Well-Known Member

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            That is a /6 shroud, the V8 one is 2785312, people have been know to make the work mounting them upside down.


            Alan
             
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            • cudajim

              cudajim cudajim

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              The radiator # is 38086
               
            • cudajim

              cudajim cudajim

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              Interesting. I had 2 shrouds too, probably sold the one that's right for the V8. I tried this one upside down, it does not fit
               
            • moparmandan

              moparmandan FABO Gold Member FABO Gold Member

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              Zactly what I was thinking, lol.
               
            • krazykuda

              krazykuda Well-Known Member FABO Gold Member How-To Section Editor

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              Restoration Radiator Fan Shrouds
               
            • Alaskan_TA

              Alaskan_TA Well-Known Member

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              The 5 digit number if it is an original radiator is the vendor ID for the vendor that supplied it to Chrysler.

              Look for a 7 digit part number.
               
            • Dana67Dart

              Dana67Dart Like a fine wine, only getting better with age! FABO Gold Member

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              IMHO
              Don't add a shroud, fix the cooling issue.

              Pulley sizes, # water pump vains, radiator cores, radiator clean, block clean, thermostat proper temp, proper pressure cap etc.
               
            • 4spdragtop

              4spdragtop FABO Gold Member FABO Gold Member

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              Rad hoses still line up with rad?
               
            • Dana67Dart

              Dana67Dart Like a fine wine, only getting better with age! FABO Gold Member

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              What you don't know is if the rad was recored in its life. If so (most likely) it might have been recored with a less efficient core.
               
            • kursplat

              kursplat FABO Gold Member FABO Gold Member

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              centered = /6
              offset 1 1/2" = SB v8
               
            • AJ/FormS

              AJ/FormS 68 B'cuda fb, Form S clone ... 367/A833/3.55s

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              What's "warm"?
               
              Last edited: Aug 12, 2020
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              • kursplat

                kursplat FABO Gold Member FABO Gold Member

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                no longer cold
                 
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                • krazykuda

                  krazykuda Well-Known Member FABO Gold Member How-To Section Editor

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                  Shrouds are an important part of the cooling system...
                   
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                  • BobW

                    BobW Curmudgeon At Large

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                    Let me know if you want to sell the /6 shroud.
                     
                  • lilfontleroy

                    lilfontleroy annoyinglilLeroy FABO Gold Member

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                    does the buyer think they got a slanty shroud? if you know how to get in touch with him/her maybe a "correcting" trade is an option?
                     
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                    • AJ/FormS

                      AJ/FormS 68 B'cuda fb, Form S clone ... 367/A833/3.55s

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                      What I mean is; warm is relative.
                      Some guys think 160 or 180 is warm.
                      I run 205 or more as warm.
                      Warm is good. Warmer is better. It's all good until the oil gives up, or the coolant boils
                      The trick is to make sure the engine temperature is stable, whatever it is; and that 7-blade fan is a key player, for as long as the clutch on it continues to work properly. And at low speed,(below about 30mph),the shroud is the third member of the three-part team.
                      >The properly working thermostat sets the minimum coolant temp, and has nothing to do with the maximum, unless it is defective.
                      >The maximum coolant temp is governed by the efficiency of the system, and varies with both engine speed and roadspeed.
                      >Below about 30mph, the fan/shroud/clutch/coolant circulation, are the important players.
                      >Circulation consists of;the rad cores, the pump, the pulley ratio, the belt,the rpm,the stat, and the hoses including the bypass.
                      >Idle is the hardest to deal with, as the pump-speed is the slowest, and the air has to be "sucked" thru the rad. The faster the vehicle is moving the less work the fan has to do. Which is good, cuz the faster the engine is turning, the more heat it generates. Somewhere between 30 and about 45mph, the system is loafing. Depending on the operating rpm, after about 45mph, the system is gonna start generating heat again.
                      >To prove your system, you can remove the stat, take it apart, and put the washer part back in. This will cause the engine to be slow to warm up. But it will allow you to judge the capability of the rest of the system.

                      BTW;
                      The fan does not suck air thru the rad.
                      The fan IN THE SHROUD, creates a low pressure area on the engine side of the rad. The higher air pressure on the bumper side then wants to go there. But the rad is in the way. Anything you can do to make it easier for the air to muscle it's way thru the rad, is gonna increase the efficiency of your system. But at low roadspeed, everything depends on that shroud being there. Without it, the air being slung radially around by the fan just goes round the end of the blades and back to the front side. And around and round it goes. That fan you showed is about the best design out there, so you are on the right path. You just need to duct it....... with a shroud. Then you will be well on your way to solving your cooling problem.
                       
                    • yellow rose

                      yellow rose Master Of Insanity

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                      If you want to make power and/or control detonation hotter is bad.
                       
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