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Speedo Drive Changes for Models with 14" wheels

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  • Speedo / Tach / Gauges: Speedo Drive Changes for Models with 14" wheels

    Does anyone have any information regarding the changes (if any) that were made by Studebaker-Packard in order to accommodat the 14" wheel models for 1958 as it relates to speedometer accuracy ? Without any changes the speedometer would obviously indicate a speed several %age points too slow. Therefore, did they change the driven gear at the end of the speedo cable, or perhaps an internal calibration of the speedometer. I can't find anything on this particular subject. Thanks, Dan

  • #2
    Sorry on last post. i mean too fast. Dan

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    • #3
      The 15" rims usually had 6.70 tires. The 14" rims had 8.00 series tires......much larger in relation to the rim, and nearly the same outside dimension.
      Bez Auto Alchemy
      573-318-8948
      http://bezautoalchemy.com


      "Don't believe every internet quote" Abe Lincoln

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      • #4
        Bezhawk, that sounds correct, however, advertising indicates the cars sit 1/2 inch lower with 14" wheels. It would be interesting to compare the actual height of the mounted tire. Other than trying to follow suit with the other carmakers and provide a lower car, what would have been the purpose ? Studebaker incurred a lot of expense to so if it yielded no net result. Interesting. Perhaps the 14s gave the "look" they wanted on their new full size hardtop ! Thanks, Dan

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        • #5
          58 cars changed the floor stampings to accommodate the new one piece drive shaft. The rear leaf springs were changed to assemetrical units, and I believe this is how they achieved lowering.
          Bez Auto Alchemy
          573-318-8948
          http://bezautoalchemy.com


          "Don't believe every internet quote" Abe Lincoln

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          • #6
            bezhawk, well that makes sense. Thanks, Dan

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