Speedo Gear
After installing a Turbo 350 trans in my '65 C10 my speedometer displays a speed of about 10-15mph more than I am actually traveling. I purchased a set of several different driven gears but was wondering if anyone knows which one would be my best bet for correcting the speedo. My truck has a 373 rear end and 29" rear tires. I can probably figure it out with trying each one but thought it might be quicker with some prior knowledge.
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