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Hudson Speedo Gear Needed
  • aminardaminard
    Posts: 87Senior Contributor
    Hi, I am looking for a speedo gear of 18 teeth or greater. Is there such an animal out there?



    Also, if I put larger tires on my Hudson will the speedo read faster or slower?



    Thanks,



    Allan
  • ET8conv
    Posts: 119Expert Adviser
    Larger diameter tires will slow the speedo down, less revolutions per mile. What year car are you needing it for ? I may be taking an 18 tooth out of my 50C8 as I has 4 5/9 gears and went to 4 1/9.



    Tom.
  • aminardaminard
    Posts: 87Senior Contributor
    This would be for a 51 transmission. Are you putting in a gear with less teeth then?



    Allan
  • ET8conv
    Posts: 119Expert Adviser
    Yes, The parts manual lists what speedo(pinion) gear is needed by axle ratio & tire size. My 50 C8 with 4 5/9 axle used the 18 T gear, with 4 1/9 used a 15 or 16T gear depending on which tire is used( 7.10 tire used 15T, 7.60 tire used 16T gear). Hope this helps.
  • aminardaminard
    Posts: 87Senior Contributor
    It does answer my question - thanks. I got a call last night and an 18 tooth gear is coming to me.
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