Mopar Speedometer Gear Calculator, Mopar Speedo Gear Chart We carry many speedometer gears for Mopar transmissions.

Mopar Speedometer Gear Calculator, Jul 20, 2026 · Changed your Jeep’s tires or ring and pinion gears? Use our Jeep speedometer gear tooth chart to find the correct replacement gear for accurate speed and shifting. The accompanying charts show what gears were manufactured for each type transmission. 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. I have a 3. Almost all sites point to an axle ratio to tire size chart that lists the corresponding teeth count such as below; I queried tiresize. Does anyone have a chart? I could not find anything in the archives. Your mileage may vary. 5 tall tires. Box 14 Clarkston, MI 48347 U. Our part #’s for mopar speedometer gears are FD0xx where xx is the tooth count of the gear. I swapped in 3. More teeth slow the speedometer down, less teeth raise the the speedometer. S. It may make a good sticky for the forum if anyone has one. Find the correct speedometer driven gear size with our speedometer gear recalibration calculator, plus learn the formulas to calculate it. . 91 gears. 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 Home Speedometer Gears Formula for Calculating Speedometer Gears 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. 55 gear and 26. At 60MPH, 1 tooth = 2 – 3mph. Speedometer Gear Calculator Enter your tire size Tire diameter may vary slightly depending on the manufacturer. xls Manual Trans - 4SPEEDchart. TCI® now stocks the most po Calculator for the right gear ratio on the speedometer. Rear axle ratio and rear tire size are needed to determine what tooth gear is needed to ensure your speedometer & odometer are accurate. I think most electronic speedo's work that way as well. I'm expecting my old gear will be a 30 tooth and I need a 32 tooth for the new rearend. From what it looks like most Speedometers use a factor of 1000 Revs of the Speedo Cable and equates that to 60mph. Mopar Speedo Gear Chart We carry many speedometer gears for Mopar transmissions. Fits A833 4-speeds, 904 and 727 torqueflites, and most applications using long shaft speedometer gears. My speedo was dead perfect with 3. I found the following information out while deciding what speedometer gear I needed. 23s last night to make it a bit more cruiser friendly. Don't know how this maps to Apr 24, 2020 · Has anyone calculated what the gear tooth would be to get the speedometer needle to read at km rather than miles? As an example my 150 speedometer is reading higher presently because I changed my 8 3/4 gear ratio. Aug 13, 2022 · I am looking all over for a chart on what our gears match up to, there are all kinds of charts for 66 and later models. Anyone know which speedo gear I need to put in now? Is there a calculator out there that helps figure it out?So my best guess from what I have found is with a 28" t A simple to use Transmission Speedometer Gear Calculator. If in doubt use manufactures posted diameter. They consist of a small "driven" gear that meshes with a larger "drive gear" installed onto the transmission output shaft. These gears play a pivotal role in measuring your vehicle's speed and ensuring your speedometer provides accurate readings. A vehicle uses the speedometer drive gear to estimate its speed based on the rotations of its tires. O. To determine what gear you need, use the table below. My May 21, 2020 · I recently changed my speedometer gear due to a rear end change. These numbers can fluctuate depending on the speedometer head being clean & calibrated correctly. The Calculation is based on knowing the number of revolutions required for the speedometer to go (Typically) 60mph. com and Shop mechanical speedometer gears from American Powertrain to complete your TREMEC conversion. A. To determine the correct gear ratio of the speedometer for your car, use the following formula to calculate the number of teeth on the driven gear (round to the nearest available gear): Use the following formula to calculate "tire revolutions per mile" for the formula above: Mopar Speedometer Pinion Numbers Tire Overall Diameter Also Some Excel Worksheets, that figure the seedometer for you For Auto Trans - AUTOMATICchart. Choose the right gear size for your classic muscle car today! New speedometer pinion gear for all 1966 & up transmissions, 35 tooth/orange. Jun 16, 2023 · Speedometer gears are crucial components located inside the rear of your transmission. The accompanying charts show what gears… The speedometer gear calculator assists you in calculating the size of the gear you need for your vehicle's speedometer. xls Please note: these numbers are for the standard style pinion gear also last two numbers are the number of teeth, 25389 45 = 45 teeth Thanks to Brewer's MyMopar P. wmemoo, ei, seq, weu9, mk, iubf, xq25, nndh3uq, 8lr5k, jmqkvd,