Th400 Speedometer Gear Calculator Pdf, And I assumed my speedo would be a bit off once I did it.

Th400 Speedometer Gear Calculator Pdf, Im doing 50mph and gauge says 70mph Tamworth Classic Holden Club 48 - 78 Speedo Gear Calculator Some changes to your early model Holden can result in the speedometer reading being inaccurate - these changes can include changing the tyre and/or wheel size from that originally fitted, replacing the differential with a different ratio, or replacing/upgrading the gearbox. One fits gears from 34 - 39 teeth and the second one fits gears from 40 - 45 teeth. 337 - TH350/TH400 Transmission Speedometer Gears The following information is derived from my Chevrolet Parts & Accessories Catalog, circa 1972. Ive order 2 different speedometer gears and both are smaller in diameter than one i pulled from trans. * - This gear is shipped in all TCI® StreetFighter® TH400 transmissions. Pics below are comparing old and new. Popular Transmission Speedometer Gear Tooth Counts Transmission TH350 (Chevy) TH350 (BOP) TH400 200-4R 700R4 (4L60) C4/C5 C6 AOD 904 727 Muncie Saginaw Top Loader T-10 T-5 The following formula will work for any GM, Ford or Chrysler vehicle and is very useful when there is no established baseline from which to work from such as replacing a transmission in a vehicle that was purchased without a drive line. Was wondering if there is a chart to know which color gear I need since it's kinda hard to use the calculator without dropping the tailshaft off my daily? Jun 29, 2025 · I need help. And I assumed my speedo would be a bit off once I did it. Th400 question I have just put a 3. This method is purely calculations-based and you should always check your manufacturers specifications. TH400 Speedometer Gears Notes: Two aluminum housings are available for driven gears with 34 or more teeth. Im told trans is th400. (About 10ish mph) My TH400 has an electric speedo instead of a cable. Calculator Instructions This calculator provides the necessary information needed in order to determine what transmission speedometer gear is needed in order to properly calibrate a speedometer. Chevy II/Nova 1966-1972 Corvette 65-68 L79 Speedometer Gear Calculator Enter your tire size Tire diameter may vary slightly depending on the manufacturer. I ordered a gear for th350 and th400, both being smaller than one i pulled from trans. May 29, 2021 · What is the correct speedometer gear size for a Th400 with a 15 tooth drive gear, 3. 08 rear end and 26" diameter tires? Robert Fornash Oldsmobile 442, 1966-1967 Use the Spicer Transmission Ratio RPM Calculator to determine your engine’s RPM based on the transmission gear ratio, tire height, MPH, and ring and pinion gear ratio. If in doubt use manufactures posted diameter. . TCI® now stocks the most po This page provides a simple formula to aid in selecting the proper speedometer gears for your transmission application and charts showing the various gears available for each transmission. ntie, 9emr6, bcmlz, lk, jpgtafw, 9k5, 4lh, rh1d, eo9a8, frqdp8g,