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  1. M

    Speedometer ratio adapter

    Factory size tires 15's...original rear end...the insert point of the ratio adapter is rounded out... haven't been able to find a replacement...
  2. M

    Speedometer ratio adapter

    I have a 76 Sierra Classic with TH350 transmission. It has a speedometer ratio adapter between the transmission and the cable... question is, can I do away with the ratio adapter and attach the cable directly to the bullet insert at the transmission...can change the gears for correct calibration???
  3. M

    Intro

    Hey guys! New to this site... currently in the process of restoration of 1976 GMC Sierra Classic...I'm not really much mechanic but I have walking around smarts...

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