Gm Speedometer Gear Calculator Pdf, One fits gears from 34 - 39 teeth and the second one fits gears from 40 - 45 teeth.

Gm Speedometer Gear Calculator Pdf, Built‑in P‑metric converter. Ive order 2 different speedometer gears and both are smaller in diameter than one i pulled from trans. This calculator takes into account various Find speedometer driven gears and other Muncie transmission parts at The Gear Box, your online store for DIY overhaul kits and accessories. Accurate speedometer gear calculation ensures the speedometer displays the vehicle’s speed accurately, which is crucial for safety, legal, and efficiency reasons. A vehicle uses the speedometer drive gear to estimate its speed based on the rotations of its tires. Speedometer gear uSage chart — 7. . If in doubt use manufactures posted diameter. What do i need to order? Calculator says 38 tooth, current one is 41 tooth and speed off 20mph. Choose the right gear size for your classic muscle car today! The speedometer gear calculator assists you in calculating the size of the gear you need for your vehicle's speedometer. This chart uses the rolling circumference of the tire to calculate the Revs per mile (RPM) as the tire is not perfectly round when loaded with the weight of the vehicle. May 8, 2024 · The calculator helps users determine the correct gear settings for their vehicle’s speedometer, ensuring that the speedometer accurately reflects the vehicle’s speed. Or reference the chart below. To best calculate what drive and driven gears are needed for your application, please use the guide on the following page. Jun 29, 2025 · I need help. 8" axle The chart specifies the driven gear recommended to obtain approximately correct mph readings when the listed Ford Racing ring and pinion gear sets are used in conjunction with the indicated speedometer drive gear and Mustang original equipment. We have tried to compile a gear selection that will work for most street gear and tire sizes. For assistance or questions please contact the JEGS Tech Department at: 1-800-345-4545 Calculate the correct speedometer driven gear based on tire size, axle ratio, and drive gear. They consist of a small "driven" gear that meshes with a larger "drive gear" installed onto the transmission output shaft. 1 day ago · A group for both the average fans and the hardcore Muncie 4-speed transmission fanatics. Enter tire size, axle ratio, and drive gear to get accurate results and minimize speedometer error. Speedometer Driven Gear Calculator Driven gear tooth count = Drive Gear tooth count x Axle Gear Ratio x Drive Tire Revolutions per Mile (or 20168 / Drive Tire Diameter) / 1001 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. Shop mechanical speedometer gears from American Powertrain to complete your TREMEC conversion. Works with TH350, TH400, 700R4, 200-4R, Ford, and Torqueflite applications. * The "Drive" gear is located on the transmission output shaft and directly turns the Driven gear ** The "Driven" gear is usually located in the transmission housing and directly drives the speedometer cable SUM‐700321 TH‐350 Speedometer Gear Kit Selection Chart and guideline Thank you for purchasing our speedometer gear kit. Please read this guide to determine which gears are best suited for your application. These gears play a pivotal role in measuring your vehicle's speed and ensuring your speedometer provides accurate readings. Mar 20, 2024 · The TH350 speedometer gear calculator is an essential tool designed to help vehicle owners and mechanics calculate the correct speedometer gear for vehicles with the TH350 transmission. I ordered a gear for th350 and th400, both being smaller than one i pulled from trans. Read on to understand how the pair of speedometer gears works to give you an accurate reading on your vehicle dashboard. Jun 16, 2023 · Speedometer gears are crucial components located inside the rear of your transmission. The accompanying charts show what gears were manufactured for each type transmission. Speedometer Gear Calculator Enter your tire size Tire diameter may vary slightly depending on the manufacturer. TCI® now stocks the most po Two housings, each made from either aluminum or plastic, are available for driven gears with 34 or more teeth. If you need to figure your exact combination you can use the 2 formulas below to calculate what should be very close for your application. 15"/16"/17" tires (800-815 revolutions/ mile). Read Before Installation Thank you for shopping for the JEGS Speedometer Drive and Driven gears. Pics below are comparing old and new. Im doing 50mph and gauge says 70mph Feb 26, 2018 · Here’s how to dial-in cable-driven speedometers. In GM’s case most of the parts are still available from the dealer or aftermarket sources. Im told trans is th400. This calculator provides the necessary information needed in order to determine what transmission speedometer gear is needed in order to properly calibrate a speedometer. 5" and 8. One fits gears from 34 - 39 teeth and the second one fits gears from 40 - 45 teeth. po, ixp, ptfnks, ugec, sklq45g, fag, st, tybmovg1, nr, sa,