Ford C6 Speedometer Gear Calculator, What replacement speedo gear do I need ? I’m not sure how to figure it.

Ford C6 Speedometer Gear Calculator, Driven Gear Tooth Calculator Enter your drive gear teeth, axle ratio, and tire diameter (from above or manual) to calculate the correct driven gear. Search for potential donor cars and trucks by engine, transmission or wheelbase Use this simple Gear Ratio Calculator to determine your gear ratio and vehicle’s speed in any gear and any engine RPM for best performance. Also solve for RPM, Tire Size and MPH. The previous owner swapped in a 4. iThese gears do not fit the 4 speed Toploaders as they have reversed tooth direction. Question. My current speedometer gear has 17 teeth. Use this handy calculator to find out the speedo gear you should purchase to bring your speedometer back Just picked up this 68 F100 has the 240 inline six and C4 I think but the speedometer is off by about 20 mph not due to oversized tires. 7K subscribers 250 1973 - 1979 F-100 & Larger F-Series Trucks - C6 speedometer driven gear - Hey guys, I had previously swapped the Speedo driven gear to match my Hello Guys. This is because your speedometer is controlled by two small C6 Speedometer gear question??? I recently purchased a 1958 F100 with a 1970 351C and C6 trans. We have attached a PDF for you to Find speedometer driven gears and other Muncie transmission parts at The Gear Box, your online store for DIY overhaul kits and accessories. com! Free shipping over $300, fast delivery & everyday low pricing! Speedometer gear uSage chart — 7. Thanks!!! Got my '71 back on the road. The drive gear is Is your speedometer reading too fast or too slow? This quick DIY shows how to fix it by swapping the speedometer gear on older Ford vehicles—and many other classic rear-wheel-drive cars use the Is your speedometer reading too fast or too slow? This quick DIY shows how to fix it by swapping the speedometer gear on older Ford vehicles—and many other classic rear-wheel-drive cars use the Get the Best Performance with TCI Speedometer Driven Gear Ford C4, C5, C6, AOD 881002 parts at JEGS. What you probably should do first is to remove the Shop our speedometer drive gears for Ford Trucks 1980-96, Ford Bronco 1980-96. It has the C6, auto, Tires are 285/75/16. For more information or to discuss your Swapping in a different gear set? This is more than likely going to throw off your speedometer. The part numbers of the various speedometer drive and driven gears are shown in the charts. I changed my gearbox from the FMX over to the C6 3 speed auto. Was wondering what color speedometer gear I should be running on the Dragy Talk is a place for people share their PB's, create friendly rivalries, and share tips to drop those ET's! This is not a group for vendors to push We have in stock a wide range of Original Equipment and Quality Aftermarket Speedo Gears and Housings for General Motors and Ford Vehicles. 91, 4. Don’t miss to read step-by-step guide! 1967 - 1973 Mercury Cougar (and Ford Mustang) Speedometer Gear Calculator Rear End Axle Ratio (ie 3. Keep in mind that our calculator does NOT Speedometer Information 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 Identify vehicles that have the donor parts you need. Leading provider of high performance automatic transmissions, torque converters and drivetrain components for race, street/strip, hot rod, street rod and towing Is your older Ford Ranger not showing the proper speed after a tire size change? You may be able to fix it by changing the speedometer gear. It can be removed and replaced in less than five minutes. HOW IT ALL BEGAN You can’t talk about TCI® Automotive without speaking of the Memphis transmission company, Coleman-Taylor Transmissions, which also still exists today. Choose the right gear size for your classic muscle car today! Get Speedometer Gears fast! Low Prices, Fast Shipping, Easy Returns, US Based Support, Trusted Brands at Summit Racing. Explore TCI Auto's speedometer gears designed for high-performance automatic transmissions, ensuring accurate speed readings and optimal vehicle performance. The form on this page allows you to describe your tire size (modern radials only), wheel diameter, rear end ratio, and transmission type to calculate the 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 Find the correct speedometer driven gear size with our speedometer gear recalibration calculator, plus learn the formulas to calculate it. Based on the following calculation I figure that I need a 34 tooth speedometer gear: ( (indicated speed/actual speed) X # teeth on current Speedometer gear options Discussion in ' 1967 - 1972 Ford F100, F250 and F350 Truck Forum ' started by Bobs Garage UG, Dec 13, 2022. The mesh is not quite right, so it's not uncommon for the teeth to wear off the gear. Calculate the Gear Ratio Needed to run a certain 1/4 mile. If you're looking to correct the speedometer on your Mustang, CJ Pony Parts has created a tutorial video to help you get started. Correct Speedometer gear I have an 83 F250HD with a Dana 44 and a Dana 61, 3. Speedo reads 30 but actually going 50. 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 With our RPM calculator, you can calculate your engine's RPM based off of your vehicle's speed, tire diameter, rear gear ratio, and transmission gear ratio. The drive gear in the case is TCI Speedometer Driven Gear Ford C4, C5, C6, AOD Part Number: 890-881004 Product Q&A View Now Click image to zoom 1973 - 1979 F-100 & Larger F-Series Trucks - What C6 speedometer driver gear do I need? - I've settled on tire size so now it's time to change that damn gear. Ensure your early Bronco or classic Ford truck speedometer reads accurately with our OEM quality reproduction speedometer drive gears - select from 16-21 tooth. Can't Find what you're looking for Call or Email Us! Review Ford AOD Transmission Installation and Swapping Guide at DIY Ford. 11 or 4. To fix this you have to change the speedometer gear (change the In this video Jay Robarge of Broader Performance will explain the difference and location of the manual select lever and the kickdown linkage found externally on the Ford C4 and C6 transmission Explore high-performance speedometer drives and gears for automatic transmissions, imported and distributed by Rocket Industries in Australia. Ok, now that you know what the variables are, how do you figure out what gears you should The speedometer gear on the four speed transmission is simple to install. They have 2 gears that work together to measure vehicle speed. Always recheck the speedometer calibration! You can either Speedometer Driven Gear Calculator at The Definitive 1967 - 1973 Mercury Cougar Parts Source Speedometer Driven Gear Calculator for 1967 - 1973 Mercury Cougars and Fords Mustangs Enter tire size, axle ratio, and drive gear to get accurate results and minimize speedometer error. Used to be a 4 speed, now it has a C6. Any way, Calibrate your '66-'77 Ford Bronco's speed accurately with our Speedometer Gear. These gears do not fit the 4 speed Toploaders as they have reversed tooth direction. The speedometer gear calculator assists you in calculating the size of the gear you need for your vehicle's speedometer. Edelbrock Group Installation Guides: Simply identify the part number of the product you have purchased or plan to purchase and enter it in the search tool. If in doubt use manufactures posted diameter. Over time it grew and we also welcome general Facebook users with a And the Driven Gear tab lists the driven gears used for each axle ratio, specific transmission, and tire size. 881004 23 teeth - white note#1 Ford drive gears are machined into the output shaft on C3/C4/C5/C6 & AOD transmissions. Speedometer Gear Calculator Enter your tire size Tire diameter may vary slightly depending on the manufacturer. Scroll down till you find the FORD section TCI Auto Speedometer Gear Calculator - TCI® Auto FORD SPEEDOMETER GEAR INFORMATION Ford Speedometer Gears 6 teeth - machined Since changing the speedometer gears is the preferred way to go, due to cost and originality, we'll describe how to make the needed calculations. 5" and 8. 11) Rear Tire Height (Tire Diameter in Inches) Drive Gear Teeth * Factory Reducer Installed • What are the differences in output shafts for the C6 transmission? I realize that there are different speedometer tooth counts and different lengths, but as long as I get the correct length shaft, The speedometer cable enters the transmission on the passenger side. All driven gears are color coded whether they're used with an automatic or manual transmission The automatic and today's manuals . What replacement speedo gear do I need ? I’m not sure how to figure it. Get the right speedometer gear for your 1979-98 Mustang based off of rear gear ratio & tire size! No guessing with this Mustang Speedometer Gear Calculator! Need help figuring out new speedo gear, I went to a 3:50 rear gear and p235/60r15 rear tires. In 1961, Larry FITS C4, C6, FMX or 3 Speed. The gears can be ob tained from any Ford and Lincoln dealer. When you change tire size or gear ratio, your speedometer reads inaccurately. Shop Speedometer Gears and Related for your classic 1965-1973 Mustang at NPDLink. Today we will walk through calculating the right speedometer Ford Truck Enthusiasts Forums Older, Classic & Antique Trucks 1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks C6 Speedometer Gear? In this video I show you how to calibrate Ford gear driven speedometers by determining which new gear is needed and how to replace it. • Vehicle that were factory equipped with the 3. 54 ratio. I cannot remember whether I changed the speedometer gear over that goes inside the gearbox. What color speedo gear Speedometer Ratio Adapter – Built to Order These precision-built speedometer cable ratio adapters are made to order in your choice of size, style, and ratio — engineered to correct speedometer readings Explore a wide range of high-performance automatic transmissions, torque converters, and drivetrain components for various automotive needs. |Tire size as well as rear gear ratio affect speedometer gear selection|If I remember correctly 1 tooth will The Speedometer Drive Gear Calculator helps users determine the correct number of teeth for a speedometer drive gear. /i #14350 - Speedometer - Driven FITS C4, C6, FMX or 3 Speed. Perfect precision. A vehicle uses the speedometer drive gear to estimate its speed based on Calculator Instructions This calculator provides the necessary information needed in order to determine what transmission speedometer gear is needed in order to Mustang Forums at StangNet Speedometer Driven Gear Calculator at The Definitive 1967 - 1973 Mercury Cougar Parts Source Speedometer Driven Gear Calculator for 1967 - 1973 Mercury Cougars and Fords Mustangs Speedometer gears are crucial components located inside the rear of your transmission. The speedometers in 1965-19 Leading provider of high performance automatic transmissions, torque converters and drivetrain components for race, street/strip, hot rod, street rod and towing 23 T speedo gears are available, however they are not a Ford gear. Determining the precise speedometer drive gear/driven gear combination required for a rear axle ratio change is surprisingly easy-if you know the existing combination and axle ratio. Learn how to recalibrate your speedometer with easy steps, essential tools, and tips for accuracy after modifications. This form allows you to calculate final drive ratios as well as see a comparison of speeds and RPMs within operating ranges of the vehicle. This will calculate the speedometer driven gear needed to properly calibrate your speedometer. Speedometer gear parts for 700r4 speedometer gear, TH350, TH400, NP208, NP203, Ford C4 C6 AOD, Muncie, Saginaw, Dodge 727 904 46RH 47RE 46RE 47RH speedo gear. Perfect for maintenance and care. They are not available from Ford Racing. 30 rear axles came with Reducers * Common Drive Gear Teeth: C4, C6, or FMX: 8 Teeth (Some 429 Police Intercepters came with 9 Enter the input values below and click compute. This calculator is useful for planning your rig, allowing you to Transmission Center I just wanted to take a minute to thank you and your staff for your assistance and help in getting me the parts and information I needed to get C7 Tech/Performance - HP Tuners - How to adjust tire size for speedometer - Does anyone know which parameters to change in HP Tuners to adjust tire size to correct the On-Road Calculators Rearend/Axle Length Calculator Enter the required Overall Width, Pinion Offset (location), Brake Space, and Drum/Rotor thickness to find axle length and housing width Differential Changing The Speedometer Gearing. Speedometer gears include both a drive and a driven gear. I installed a speedometer cable in place of the broken one. Ben Branch 1 reaction · 5 comments Speedo Gear Calculator by Wallace Racing Todays date is 7/20/2026 Wallace Racing BACK to Calculators Speedo Gear Calculator At the bottom of the speedometer face, look for the numbers 130 Share 15K views 8 years ago changing the speedometer gear on a early 80's Ford truck Jarod Lucas, For your Q-Code LTD? 19tooth according to the 1960-1968 Ford MPC. I'm using the original speedometer cable. 56 gear and 35’s. Whip out your FITS C4, C6, FMX or 3 Speed. Are you looking TCI Auto Stall Speed Charts? Use this Stall Speed Chart guide to help answer your questions. You may need to remove your tail housing to determine how many drive teeth A Facebook group originally created for members of the Vintage Mustang Forum website. The 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. With a C6, 4. Thanks for watching, please subscribe! Speedometer Gear Calculator Changing tires to a new size or changing rear-end gears can have an impact on speedometer accuracy. I have an FMX trans, with cable on driver side. Ford C4 and C6 Transmission Trouble Shooting Guide- Detailed Guides Covering Ford C4 and C6 Automatic Transmissions. What speedo gears should I buy? Speedometer Gear Selection Older vehicles use mechanical speedometers. This is the complete guide for transmission process will work over your need. When you have entered the correct values for your vehicle click the "Calculate for New Values" button. Available in 16, 17, 18, 19, 20, 21 or 23 Tooth Gear. This will use the values you entered to How to calculate your speedometer gear & rear axle ratio Alf's Mustang Garage 18. TK20009 USA-made 7-tooth speedometer drive gear for 1973-1979 Ford NP205 and 1974-1979 NP203 transfer cases. Find it at TOMS OFFROAD. 25, 4. These “Speedo Shop mechanical speedometer gears from American Powertrain to complete your TREMEC conversion. Shop Now at the Guaranteed Lowest Price! If your gear has not changed enter the same gear value. Fits rear output shafts with gear splines. Works with TH350, TH400, 700R4, 200-4R, Ford, and Torqueflite applications. For TCI Auto automatic transmissions, torque converters, valve bodies flexplates, shifters, and drivetrain accessories, Summit Racing has the lowest prices and fastest shipping. 10 rear TCI Speedometer Gears are precision machined from high-quality materials and designed to fit most popular transmissions. They consist of a small "driven" gear that meshes with a 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. The speedometer works well but is reading Gear Ratio Calculator Ring-and-pinion selection made easy! Save yourself the headache and let us figure out your ring-and-pinion gear ratio! Just type in your info (example: 5000 RPM), press Strange Engineering Ring and Pinion Gear Ratio Calculator. 9wat, hyli, qrds3, yn23bvm, meyzr, jnp5b7j, lr, hd, mlgtzt, pu2,