53 Chevy truck

[essikr]

Is there a way to correct the speedometer when larger size tires are installed. The engine and 3 speed transmission are stock. The reading is well under the actual traveling speed. The truck has been restored.Thanks for your help.

[Blue Bowtie]

Yes, there are methods. Usually, speedometer cable driven thimble gears can be exchanged for different driven gear sizes and result in a speedometer indication that is relatively close. However, thimble gears for your transmission are likely no longer available. I had a 1950 3100, 235, "three-on-the-tree" non-synchro trans, probably just like your's.

Another method is an inine gear unit which allows ratio changes. There are several places offering such units. Perform a Google search for "speedometer ratio adapter" and you'll find hundreds.

[essikr]

Thanks ,I will try that. I was aware of the transmisssion gear but finding one with the correct ratio seemed impossible.