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Calibrating 203 speedo?

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by BowtieRed, May 13, 2003.

  1. BowtieRed

    BowtieRed 1/2 ton status Author

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    Location:
    Winston-Salem, NC
    changed gears, 4.88 to 3.73, went down 45pmh highway and was passing people at '30mph' /forums/images/graemlins/grin.gif haha

    help, please
     
  2. JustHorsinArownd

    JustHorsinArownd Registered Member

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    Location:
    Flagstaff, Az.
    Easiest would be to go to your closest speedometer shop and tell them what you did what you have and they'll prolly sell you a gear reducer. The simplest to install is the kind that screws into the same place the speedo cable does and then your cable screws into the reducer. Last time I bought one years and years ago I remember I wasn't pleasantly surprised by the cost. Thought it would be a lot more. The cheapest method is what I do which is figure out how much your speedometer is off and do the math in your head all the time. /forums/images/graemlins/wink.gif
     
  3. Aquaman

    Aquaman 1/2 ton status

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    Location:
    Kansas City, MO
    Don't worry about it man. Just find somebody to follow, and then go that speed. Do that until you get those rear gears changed back to 4.88.
     

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