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Thread: speedo help for th400
          
   
   

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  1. #1
    flanker1970 is offline CHR Member Visit my Photo Gallery
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    Dec 2005
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    palm beach gardens
    Car Year, Make, Model: 1972 monte carlo 402
    Posts
    157

    speedo help for th400

     



    I have a 1972 monte carlo with factory th400. I just switched from a 2:73 to a 3:42 gear in the rearend and I am showing a faster than actual speed on the speedo. Does anyone know how to figure out what speedo gear to use in the trans or where to get one? thanks for any help you may give.

  2. #2
    fiftee6's Avatar
    fiftee6 is offline CHR Member Visit my Photo Gallery
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    Nov 2005
    Location
    Bridgewater
    Car Year, Make, Model: '56 210, SBC
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    Check out this link. Should help you. http://tciauto.com/tech_info/speedo_gears.htm
    You can also go to ebay motors. Type in speedometer gear ratio adapter, and listings for ratio adapters will come up. It just converts it up or down by a percentage.
    "I also have a tuner, the reception's not to good, but it works"
    Phil...

  3. #3
    flanker1970 is offline CHR Member Visit my Photo Gallery
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    Car Year, Make, Model: 1972 monte carlo 402
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    thanks for the info

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