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#1
07-16-2020, 09:52 AM
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TH400 speedo gears
What speedometer tooth gears are correct for a 67 GTO with TH400 and 355 rear gears? thanks
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#2
07-18-2020, 03:32 PM
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One of these should help: http://www.wallaceracing.com/speedo.htm
or https://www.tciauto.com/speedometer-gear-calculator You can find a number of calculators on the web, search speedo calculator and TH400. |
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#3
07-19-2020, 03:25 AM
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Big factor is what size tires you are running. Going from stock diameter tire to a 275/60-R15 which is 28" tall is the same as going one ratio higher on the rear end. The calculators do this for you, but just pointing out how important listing the correct tire size is.
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Mick Batson 1967 original owner Tyro Blue/black top 4-speed HO GTO with all the original parts stored safely away -- 1965 2+2 survivor AC auto -- 1965 Catalina Safari Wagon in progress. |
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#4
07-23-2020, 10:45 PM
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400 turbo automatic trans with stock F70x14 tires should be dark gray speedo gear with 44 teeth
You will also need the larger housing part # 1362293 for 40-45 tooth gear I would look at the color gear you have first |
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