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11-03-2021, 08:07 PM
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#1 |
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Registered User
Join Date: Oct 2020
Location: Hampshire, IL
Posts: 12
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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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11-04-2021, 10:19 AM
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#2 |
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Moderator
  
Join Date: Aug 2011
Location: China Spring, TX
Posts: 7,280
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Re: Speedo Gear
Do you know what the teeth are in the transmission? You can do a calculation on the TCI website - https://www.tciauto.com/speedometer-gear-calculator#350
Or an easy one - https://www.inchcalculator.com/icwid...E1NzA5ODQ3NTU= There is a vid on how to change the gears - https://youtu.be/S6yGNIzCR04
__________________
Master Chief, US Navy, Retired 1964 C10 Step-side Short Bed - In Progress 2009 2500HD Duramax LTZ 1948 GMC Panel 1956 Big Window Stepside 1953 5 Window Chevy Stepside 1932 Coupe New Seat Foam for Bench Seats? Last edited by The Rocknrod; 11-04-2021 at 10:34 AM. |
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