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Correct Speedometer Reading...anyone care?

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by grafixxman, Oct 24, 2006.

  1. grafixxman

    grafixxman Registered Member

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    Ok, my speedometer has always been off, but been thinking about "attempting" to make it right this time around.

    Anyone have this same setup or know which transfer case and speedo side gears I will need to get to make it right?

    400Turbo/208 4.56s 38.5s

    It is a 87 Chevy so it has mechanical speedo stuff.

    Any ideas??

    Thanks
     
    Last edited: Oct 25, 2006
  2. Col_Sanders

    Col_Sanders 3/4 ton status

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    Mine being off gives me one get out of a ticket free card. I am going to leave it. I know around how fast I am going though because I checked it with a calculator online.

    http://www.700r4.com/speedoCalc/speedocalc.shtml

    Here is a calculator, I dont know if it would be the same for the TH400 as the 700R4?
     
  3. Chevy305

    Chevy305 6 Lug 14bsf Status Premium Member GMOTM Winner

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