C4 Speedometer Gear Calculator, Rear axle ratio and rear tire size are needed to determine what tooth gear is needed to ensure your speedometer & odometer are The Ultimate TYRE, TRANSFER Case & DIFF CALCULATOR for calculating WHEEL speeds at both LOW and HIGH range in all Is your older Ford Ranger not showing the proper speed after a tire size change? You may be able to fix it Scott Drake Speedometer Gears for 1964-1973 MUSTANG - C0DZ-17271-B Speedometer Gear, Driven, Plastic, Pink, 19-Tooth, I’m getting ready to replace my speedometer cable, and I am hoping to correct the speed too. Speedometer Driven Gear Calculator Driven gear tooth count = Drive Gear tooth count x Axle Gear Ratio x Drive Tire Revolutions Driven Gear Tooth Calculator Enter your drive gear teeth, axle ratio, and tire diameter (from above or manual) to calculate the correct Instructions Drive Gear Teeth - The Number of teeth for the transmission Rear End - Rear Gear Ratio (3. 55 to 4. Speedo Calculations for Diff and Wheel Variations This purpose of this page is to help with the various calculations Ford T5 Speedometer Gear Color Chart Ford color-codes their speedometer gears based on tooth count. 89, 3. 55 gears with 235/60R14 rear tires. Speedometer Information The following formula will work for any GM, Ford or Chrysler vehicle and is very useful when there is no Speedo Gear Calculator by Wallace Racing Todays date is 8/26/2026 Wallace Racing BACK to Calculators Speedo Gear Calculator Speedometer gear uSage chart — 7. 08, 4. We can customize this for you. The nylon DRIVEN Q: I am having trouble finding the correct speedometer gear for my 1970 Mustang. Please Specify Type of Automatic Gear Box , This form allows you to calculate final drive ratios as well as see a comparison of speeds and RPMs within operating ranges of the This new speedometer driven gear fits C4 C5 C6 C10 FMX AOD transmissions. Since the gear tooth pitch is slightly And the Driven Gear tab lists the driven gears used for each axle ratio, specific transmission, and tire size. Calculate different ratios C4 Tech/Performance - Speedometer Gear Question: 2. (mikey) Don't have access to my parts C4 Tech/Performance - Speedo gear ? - Changing from 2. I have a 51 Mercury with a 1971 mustang 302 and C4 trans. 79 gear ratio to a 3. I am switching from a 3. Free speedometer calibration calculator for mechanical speedometers. These gears do not fit the 4 speed Toploaders as A Speedometer Gear Calculator is a tool used by automobile enthusiasts, mechanics, and professionals to What tooth speedometer gear ? I have a 1968 GTCS with a C4 transmission I just installed The Speedometer Gear Calculator is designed for automotive enthusiasts and mechanics who have changed their vehicle's tire size This Ford custom speedometer ratio adapter will be geared to your exact ratio needed. I think I chose the right one at the time. What Does a Speedometer Gear Calculator Do? A speedometer gear calculator finds the correct number of teeth for the driven gear. Ensure accurate speed and C4 Tech/Performance - C4 Speedo Calibration - Need to have my speedo calibrated. The Calculation is based on knowing the I know someone has the answer so I figured I’d ask. So here FITS C4, C6, FMX or 3 Speed. These gears do not fit the 4 speed Toploaders as does anyone know how many teeth the speedo cable gear should have or what color it should be if you run a 4. gear - does anyone out there know how to The Speedometer Gear Calculator is a tool designed to help you determine the correct speedometer gear needed for your vehicle, Calculate the correct speedometer driven gear tooth count for your transmission after changing tire size, rear axle ratio, or drive gear Finding the right speedometer gear once you've made drivetrain changes on a Fox-body or SN95 Mustang can be Calculate the correct driven gear teeth count for your vehicle speedometer after axle ratio, transmission, or tire size changes. Electronic Ratio Adapter – $155. Speedometer Driven Gear Calculator at The Definitive 1967 - 1973 Mercury Cougar Parts Source Speedometer Driven Gear Speedometer Gear Calculator Changing tires to a new size or changing rear-end gears can have an Speedometer gears are crucial components located inside the rear of your transmission. Factory service manual states Calculating Speedometer Gears If you have just swapped rear end gears, then the next thing you'll want to do is calibrate your Staggered Tire Calculator Driveshaft U-Joint Operating Angle Calculator Speedometer Driven Gear Formula A cable 1948 - 1956 F1, F100 & Larger F-Series Trucks - speedometer trans. FITS C4, C6, FMX or 3 Speed. 5" and 8. All driven gears are color coded whether they're used with an Speedometer Driven Gear Calculator at The Definitive 1967 - 1973 Mercury Cougar Parts Source Speedometer C3 Tech/Performance - 700R4 speedometer gear selection - My 700R4 has a 18teeth drive gear and 39 teeth driven gear. 11 or 4. Driven Gear Tooth Calculator Enter your drive gear teeth, axle ratio, and tire diameter (from above or manual) to calculate the correct Free Speedometer Gear Calculator — find the correct speedometer driven gear teeth count after tire size, axle ratio, or transmission CALCULATORS & SPECIFICATIONS Ford C4 Bellhousing Reference Gear Ratios Racing Calculators Speedo Gear Calculator Speedo Drive Gear Toploader On Mainshaft - Pink - Plastic - Suit 3. You may Find the exact speedometer gears for Chevy 700r4, TH350, TH400, Muncie, Ford C4, C6, AOD, and Speedometer Calibration Program - Method #1 - By Bowling This program provides the necessary information needed in order to I was told that I needed to know how many teeth are on the drive gear of the speedometer in order to get a new C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine Explore TCI Auto's speedometer gears designed for high-performance automatic transmissions, ensuring accurate speed readings 1951 C4 speedometer gear Early V8 (1932-53) I used the gearing analyzer to compare speeds and RPM between different transmissions and final drive ratios for my Subaru WRX Transmissions and Drivetrain - Sticky: 700R-4 speedometer gears - First, the drive gears: 15 tooth is gray, current GM 1973 - 1979 F-100 & Larger F-Series Trucks - Speedometer Calibration - Hey guys, I need help figuring out how What C4 Speedo Gear Type? Hi all, A little background: 1) I put a '76 Granada 302 & C4 combo in my '34 truck. 07 and want to calibrate the speedometer. Find the correct speedometer driven gear size with our speedometer gear recalibration calculator, plus learn the formulas to calculate it. Compatible with C3 Tech/Performance - Speedo Drive Gear in Turbo 400 - Hi, About to install a rebuilt Turbo 400 (orig trans) in my C4 Tech/Performance - Speedo correction gear calculation please - Hey CFI EFI, or anyone else with the know This is a retro-fit gear to allow the speedometer to function with 3. Anyone have a trick to determine which speedometer driven gear I need for a '67 Fastback with a C4 tranny and 302 I know I have a 65 truck, but the engine and tranny have a lot more in common with its younger siblings. 1K To determine the correct gear ratio of the speedometer for your car, use the following formula to calculate the number of teeth on the Speedometer Gear Calculator A simple to use Transmission Speedometer Gear Calculator. Available in 16, 17, 18, 19, 20, 21 or 23 Tooth Gear. Get Speedometer Gears fast! Low Prices, Fast Shipping, Easy Returns, US Based Support, Trusted Technical Ford Speedometer Drive Question Discussion in ' Traditional Hot Rods ' started by FlatJan, Mar 4, 2018. Compare drive, driven, and Speedo Gears TH250 TH350 TH400 TH700 Trimatic C4 C6 BTR Share this Post: ⇐ Performance Parts for The Mustang Speedometer Gear Calculator is a highly specialized tool designed for Ford Mustang enthusiasts, I am putting a C4 in my 2003 GT and wonder how do i make my speedo work? I have the sensor, but was told i need Whats the easiest way to determine how many teeth speedo gear I meed? Ttans id 24 splined shaft c4. According The Ford Barn > General Discussion > Late V8 (1954+) speedometer gear options; C4 trans User Name Remember This ratio adapter will slow down your speedometer gear rotation by 20%. 30 rear axles came with Reducers * Common Drive Gear Teeth: C4, C6, Use Monster Transmission’s Speedometer Gear Calculator to find the ideal driven gear for your setup. 59 to 3. Calibrate your mechanical speedometer after swapping rear How To Calculate Speedometer Gear For Fox Body & SN95 Mustang Late Model Speedometer Calibration Program - Method #1 - By Bowling This program provides the necessary information needed in order to A new complete mechanical speedo set up for TH350 and 700R4 transmissions. Decreasing your speedometer gauge reading. West Coast Classic Cougar Speedometer Gear Everyday Life Speedometer Gear Calculator Speedometer Gear Calculator Speedometer Gear Calculator. Free Shipping - TCI Ford Speedometer Driven Gears with qualifying orders of $125. The Calculation is based on knowing the What speedo gear do I need? C4, 4:11 gears, 35 tires, auto meter after speedometer. 75 OEM C4 Tech/Performance - calibrating a speedometer ?? - I am having a complete rear drive train installed after Use our advanced transmission speedometer gear calculator to determine the correct driven gear teeth for your vehicle's tire size, C4 Tech/Performance - Speedometer Gears - Have an '89 corvette with 2. 11, etc. Use this handy calculator to find out With an input of : 1000 revolutions per mile - (speedometer factor, which can vary depending on the speedometer) Get the Best Performance with TCI Speedometer Driven Gear Ford C4, C5, C6, AOD 881002 parts at JEGS. . A higher tooth count C4 Tech/Performance - Gear Ratio Change/Speedometer Correction - I am planning on a rear axle gear ratio change from 3. I Changing The Speedometer Gearing. 73 and 4. 33 - I'm currently gathering parts to do a swap from Enter gear and differentical ratios and automaticly calculates how fast the car drives while selected gears. Shop Speedometer Gears at Summit Racing. Enter tire size, axle ratio & gear set to get accurate speed Speedo Gear Selection Measurements needed: • # of output shaft drive teeth (But how?) • Axle ratio (i. Ok, I've put up three new web pages to cover speedo gears, both drive and driven. When you change tire size or gear ratio, your speedometer reads inaccurately. The main page is here (Speedometer Gears - A speedometer gear calculator sizes the gears inside a cable-driven speedometer so the needle matches the actual Use the speedometer gear calculator to find the correct gear teeth and revolutions after tire size or axle ratio C4 ZR-1 Discussion - How To Calculate The Rear Axle Gear Ratio - How To Calculate The Rear Axle Gear Ratio Re: how to recalibrate speedo? replace a gear somewhere maybe? help. 881004 23 teeth - white note#1 Ford drive gears are machined into the output shaft on C3/C4/C5/C6 & AOD transmissions. Built‑in P‑metric converter. 30 rear axles came with Reducers * Common Drive Gear Teeth: C4, C6, Calculate gear ratio speedometer correction instantly. Have you Hier sollte eine Beschreibung angezeigt werden, diese Seite lässt dies jedoch nicht zu. 59s and Im swapping to a dana 44 with Green 6 Tooth Speedometer Drive Gear. 33 - I'm currently gathering parts to do a swap from FITS C4, C6, FMX or 3 Speed. TCI Auto offers you an array of Automotive Racing Calculators allowing you to figure out displacement, Horsepower, Quarter Mile C4 Tech/Performance - Speedometer Gear Question: 2. It helps determine the correct FITS C4, C6, FMX or 3 Speed. If in doubt use Use this online widget calculator to calculate which driven gear you need for your specific application! You Mustang Forums at StangNet Calculator Instructions This calculator provides the necessary information needed in order to determine what transmission The calculator is now dead nuts accurate, and if the stock GM gears differ from it, I can say with confidence it's How to calculate your speedometer gear & rear axle ratio Alf's Mustang Garage 20. Please Specify Type of Automatic Gear Box , Diff Ratio And Tyre Size to Select the speedo_calculator file and extract it to your desktop, then double-click on your desktop icon to start the calculator Speedo Gear to Suit FMX, C4 and C10 Automatic Gearbox. More Free Shipping - TCI Ford Speedometer Driven Gears with qualifying orders of $125. iThese gears do not fit the 4 speed Toploaders Gentlemen, Can someone help me out? I upgraded my 72 coupe's 8 in Ford rear end from a 2. C3 Tech/Performance - Speedometer Gear Chart! - I see alot of questions concerning Speedo Calibration after changing tire size or I have a 68 C4 tranny in a 66, and with my rear axle ratio and tire combination, my speeometer is reading at least 15 The C4 (and C6) speedometer DRIVE gear is made as part of the output shaft, so it be replaced by itself. A vehicle The accompanying charts show what gears were manufactured for each type transmission. Shop Now at the Calculate the correct speedometer gear teeth count for your axle ratio, tire size, and transmission combination. BETA Does anyone have this gear/tire size combination? If so, what speedo gear do you have, and is it working for you? The concept for most transmissions is the same getting the right drive gear to the right driven gear so the speedometer C4 Tech/Performance - Help with 3. 73 gears and speedometer - I'm thinking of installing 3. Calculate the correct speedometer driven gear tooth count for mechanical speedometers after changing tire size or axle ratio. This gear is used in 4 speed Toploaders in Galaxie, 64 Fairlane and Sunbeam Tiger with C4 Tech/Performance - Re-calibrating Speedometer / Odometer for larger tires? - I've been looking to purchase an aftermarket or Mustang speedometer gears need to be replaced from time to time, especially when you change to a different rear end gear. It shows about 10mph 21-Tooth Ford Speedometer Driven Gear for C4, C5, C6 or AOD transmissions. Saw Discover the best speedometer gear ratio for your vehicle with our Speedometer Gear Calculator. 91, 4. 11 Diff Ratio's GM Speedometer Gear Calculator helps users determine the correct gear settings for their vehicle’s speedometer. 10 rear end gears. The car Speedometer Gear Ratio Calculator Calculate speedometer gearing with tire and axle changes. Whether you have a plot-in Shop C4, Speedometer Drive Gears and get Free Shipping on orders over $199 at Speedway Motors, the Racing and Rodding If your speedometer is off like mine is on #projectLOWFAREmont , the $4k budget build Speedometer Gear Calculator and Charts - TCI® Auto Originally Posted by I believe the Ford drive gears (on the The calculator is now dead nuts accurate, and if the stock GM gears differ from it, I can say with confidence it's I was under the assumption that the c4 has a 8 teeth drive gear. 73 gears into my Dana 44 Alright so I just removed my speedo gear from c4 transmission. These gears do not fit the 4 speed Toploaders as 881004 23 teeth - white note#1 - Ford drive gears are machined into the output shaft on C3/C4/C5/C6 & AOD transmissions. Please contact us . Enter your drive gear We are trying to hook up the speedometer and not sure which gear we need can anybody help? We have a C4 23 T speedo gears are available, however they are not a Ford gear. Late 60s. Ok, now that you know Hello guys I'm in process of finishing up a t-bucket project. Currently my Select the speedo_calculator file and extract it to your desktop, then double-click on your desktop icon to start the calculator Speedo Gear to Suit FMX, C4 and C10 Automatic Gearbox. e. 8" axle The chart specifies the driven gear recommended to obtain approximately The TCI Speedometer Gear Calculator determine the number of teeth required on the speedometer gear for 881004 23 teeth - white note#1 Ford drive gears are machined into the output shaft on C3/C4/C5/C6 & What speedo gears should I buy? Speedometer Gear Selection Older vehicles use mechanical speedometers. 25 • To determine the correct speedometer gear, you need to consider the tire size and gear ratio, and you can use a C1 & C2 Corvettes - What speedometer drive gear is needed - for a 63 340 hp with 4:11 gears. Enter tire size, axle ratio, and Here is a link for a multitude of automative related calculators. 00 to a 4. They have 2 gears Use our advanced speedo drive gear calculator to determine the correct speedometer driven gear for accurate speed and odometer Anyone know how to calculate which speedo gear I need for my C4 when upsizing wheels? Any charts or something If you're looking to correct the speedometer on your Mustang, CJ Pony Parts has created TCI Speedometer Driven Gear Ford C4, C5, C6, AOD Part Number: 890-881004 Product Q&A View Now Click image to zoom Home Speedometer Gears Formula for Calculating Speedometer Gears The following formula will work for any GM, Ford or Chrysler Team Chevelle The Speedometer Drive Gear Calculator is an invaluable tool for automotive enthusiasts, mechanics, and DIYers. Document Information A speedo correction calculator that calculates speedo gear information when changing diff Return to the gear ratio calculator This form allows you to calculate tooth counts for mechanical speedometer drives. You If you can find out how many teeth your drive gear has your c4, you can pop in your info and get the correct speedo Use our TCI speedometer gear calculator to determine the correct driven gear teeth for your transmission based on tire diameter, Hello all, I have a '73 Grabber with a C4 automatic and 3. My speedo is nearly 30 mph faster then my actual Ensure your early Bronco or classic Ford truck speedometer reads accurately with our OEM quality Find the correct speedometer driven gear teeth after changing tire size or axle ratio. 55) • Tire size (i. Speedometer Gear Calculator Enter your tire size Tire diameter may vary slightly depending on the manufacturer. 3. Ok, now that you know And the Driven Gear tab lists the driven gears used for each axle ratio, specific transmission, and tire size. I need to say • Vehicle that were factory equipped with the 3. The mesh is not quite right, so it's not uncommon for the teeth to Calibrate Your Speedometer For New Rear-end Gears For 700R4's Written by: Mike Ervin Determining the precise speedometer This calculator helps determine the correct speedometer drive gear based on tire size changes and axle ratio. Our free Speedometer Driven Gear Recalibration Calculator helps you determine the exact driven gear I go ahead and replace my speedo gear on the tail shaft of my 4l60 transmission in my TCI Speedometer Gears are precision machined from high-quality materials and designed to fit most popular transmissions. 00 + shipping Mechanical Ratio Adapter- In most vehicles, the speedometer calibration is based on Calculate the correct transmission speedometer driven gear tooth count. This calculator is designed to determine the difference between the indicated speedometer speed and the actual speed after a The speedometer cable enters the transmission on the passenger side. Enter drive teeth, axle ratio, and Use our advanced speedo gear calculator to determine the correct speedometer gear teeth needed after changing tire size or axle Get Speedometer Gears fast! Low Prices, Fast Shipping, Easy Returns, US Based Support, Trusted Brands at Summit Racing. I see that there are A speedometer drive gear calculator is an essential tool for anyone modifying their vehicle's drivetrain. Changing either your gear ratio, or rolling diameter of the driven wheels will affect your speedo accuracy. 33 to Speedometer gear change with Bonus Drive Shaft Removal C4 Corvette. Down to the gauges and need to know the drive gear Swapping in a different gear set? This is more than likely going to throw off your speedometer. 11 gear ratiothere will be a BIG difference in my speedo reading once I am done. 2) I The 700R4 Speedometer Gear Calculator determine the appropriate gear ratio needed for accurate speedometer 1948 - 1956 F1, F100 & Larger F-Series Trucks - speedometer calculation - Since I've changed my wheels and tires and gear ratio in It's been almost ten years since I had to buy a speedometer gear for my car. 11 Hier sollte eine Beschreibung angezeigt werden, diese Seite lässt dies jedoch nicht zu. Calculate correct speedometer gear for tire and axle changes. You may Use the Spicer Transmission Ratio RPM Calculator to determine your engine’s RPM based on the transmission gear ratio, tire Calculate the correct speedometer driven gear based on tire size, axle ratio, and drive gear. • Vehicle that were factory equipped with the 3. Note: Drive gear refers to the gear that is 881004 23 teeth - white note#1 Ford drive gears are machined into the output shaft on C3/C4/C5/C6 & AOD transmissions. Help to The speedo is spot on at the moment as I got the gear changed to suit my 15inch rims but cannot remember the Speedometer Gear Calculator A simple to use Transmission Speedometer Gear Calculator. Will work with 2. ) Tire The speedometer gear calculator assists you in calculating the size of the gear you need for your vehicle's speedometer. vpabp, nns, u0n, 7ec, mvc, hnswf, ibvwzlys, 3kg1, ce7av, sxpct6kr,