Why so many floor and trunk holes?

Exterior Body, Paint, Trim, Chrome

  1. SDCoronet

    SDCoronet Well-Known Member

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    Why did ma mopar add so many of these things. Seems like way overkill to me.

    Since plan on adding heat and sound deadener, are there any downsides to patching most of them up with sheetmetal?

    D86CA31D-9376-4F0E-AE9D-4335F9F36B1D.jpeg
     
  2. dadsbee

    dadsbee FBBO Gold Member FBBO Gold Member

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    So the primer would pour back out after dipping..
     
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    • tnfastback

      tnfastback FBBO Gold Member FBBO Gold Member

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      They should have never put plugs in the holes that way all the rainwater could run back out :lol:
       
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      • funknut

        funknut Well-Known Member

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        The only time you would need them is if the car is flooded, I guess, so no harm in closing them up.
         
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        • odcics2

          odcics2 Well-Known Member

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          Don’t forget the trunk holes!
           
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          • Ron H

            Ron H FBBO Gold Member FBBO Gold Member

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            I dyno-matted over mine and can locate them easy enough need be but if I had to I'd be thinking it wouldn't be the worst of my problems with the car...
             
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            • eldubb440

              eldubb440 FBBO Gold Member FBBO Gold Member

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              Fred Flintstone was a Mopar man!

              oh wait.........I thought this was about rot holes :fool:
               
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              • chtampa

                chtampa FBBO Gold Member FBBO Gold Member

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                The holes were also used for jigs to form and setup body panels for assembly
                 
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                • WileERobby

                  WileERobby Well-Known Member

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                  Blame the Swiss. They also did that to cheese.
                   
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                  • Charger Dana

                    Charger Dana Well-Known Member

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                    Since plan on adding heat and sound deadener, are there any downsides to patching most of them up with sheetmetal?

                    Don’t park in a flood plain, should be fine. I used the plugs too and dynomatted over them. No floods! All good! Trunk holes a different issue, you seem to get water in there and it’s nice to drain, but also want to keep dust out.
                     
                  • 66Satellite47

                    66Satellite47 FBBO Gold Member FBBO Gold Member

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                    Jig setup holes to properly locate panels prior to spot welding, producing consistency.
                     
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                    • 68Moparmaniac

                      68Moparmaniac Well-Known Member

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                      Pop in your body plugs and call it good..
                       
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                      • dvw

                        dvw Well-Known Member

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                        When I built my racecar every plug hole was filled with metal welded in. It was easy. Now if there is fire all entrances are blocked.
                        Doug RC22.jpg
                         
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                        • Ron H

                          Ron H FBBO Gold Member FBBO Gold Member

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                          Yeah - it's irritating making a sandwich with two slices of swiss and the holes align keeping the hole...a tip, flip one slice around so the holes don't match up...I know this is just genius...
                           
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                          • WileERobby

                            WileERobby Well-Known Member

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                            I think that's a bunch of baloney.
                             
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                            • Dave Eamon

                              Dave Eamon Member

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                              Ma Mopar began the seven step dip and spray process for the 1960 model year. During manufacturing, they dunked the bodies in vats to a level about 2/3 of the way up the doors and sprayed them from above with cleaning, rinsing and rust inhibiting chemicals. The seventh step was a phosphorous dip that left the bodies appearing white in colour. Hence the term "Body in White". They still use this process today, but the bodies are dunked 100%.

                              The holes in the floor and trunk pans are there to aid fluid inflow and drainage during this process. It's probably okay to weld 'em up, but easier to buy a plug set from a supplier like Classic Industries and just insert 'em in the holes...
                               
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