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Speedo calibration.... driven gear needed

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by rcpilot, Oct 17, 2002.

  1. rcpilot

    rcpilot 1/2 ton status

    Feb 22, 2002
    Likes Received:
    Central Cali
    Currently have a 19 tooth "J" driven gear... need a 17 tooth...speedo shops want to send me a plastic gear.. my '76 Blazer TH350/NP203 has a metal gear... most web sites list the metal gear "J" as a TH400 gear...dealer says /forums/images/graemlins/rolleyes.gif
    Any idea where I can get a 17 tooth driven gear /forums/images/graemlins/1zhelp.gif A ratio adapter is $65.00 from United Speedometer in Riverside, CA...

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