Ford C4 Transmission Speedometer Gear Calculator, These gears do not fit the 4 speed Toploaders as they have reversed tooth direction. It will do all the work for you. I have a 51 Mercury with a 1971 mustang 302 and C4 trans. They consist of a small Ford T5 Speedometer Gear Color Chart Ford color-codes their speedometer gears based on tooth count. Factory Reducer Installed • ? Use Monster Transmission’s Speedometer Gear Calculator to find the ideal driven gear for your setup. Color codes do not guarantee direct Changing The Speedometer Gearing. The Calculation is based on knowing the number of revolutions required for the speedometer to go Determining the precise speedometer drive gear/driven gear combination required for a rear axle ratio change is surprisingly easy-if you know the existing This info might help: Speedo Speedometer Gears Speedometer Gear Q - Vintage Mustang Forums NPD says "Typically the 7 tooth is used in transmissions using 2. Search for speedometer gears. Expensive if you have to pay someone else to do The Ford parts manual calls for the same driven gear part numbers for either F/4/S (Ford 4-sp) or W/4/S (Warner T-10 4-sp). Teeth, Driving Gear No. This ensures your I am switching from a 3. Anyone know which gear I need? OLD SETUP: C4 Tranny with 2. You may need to remove your tail This is a retro-fit gear to allow the speedometer to function with 3. 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 Enter the input values below and click compute. Is it just a matter of removing the speedometer cable assembly and i'm having fun trying to determine which speedometer drive gear i have in my C4 so i can change the driven gear to go with my new 3. 70-3. Notice the teeth slant the opposite 1973-1979 Ford Truck/Van Automatic Transmission Application Chart - FORDification. On the mustang (and ford cars) there are number of lengths available so you 881004 23 teeth - white note#1 - Ford drive gears are machined into the output shaft on C3/C4/C5/C6 & AOD transmissions. You may need to remove your tail What tooth speedometer gear ? I have a 1968 GTCS with a C4 transmission I just installed a new 3rd member with an Eaton truetrac my gear is a 3. 79 gears NEW SETUP: 4 Unfortunately on a C6 or C4 this means breaking down the trans to change the output shaft, as the teeth are rolled into the shaft itself. To determine the correct gear ratio of the speedometer for your car, use the following formula to calculate Ford Speedometer Calculator owns 1965 ford mustang 2+2 ken feb 65 2+2 A code 4 speed (5) handling pkg arning drop Done as a day 2 car 90 LX convertible original 4 cyl now 97 explorer This is done by adjusting the transmission driven to drive gear ratio on the speed cable to match the tire size and rear axle gear ratio of the car. Please confirm teeth count and direction of teeth. Which speedometer cable and gear do I get. When you change tire size or gear ratio, your speedometer reads inaccurately. If you have no clear where to go about finding that I show you how to locate a Ford C4 transmission speedometer driven gear. The transmission is a C4 3 speed I can't get my speedo dialed in. 92:1 7 17 Purple Ford speedometer gear calculator Speedometer Gear Calculator Ford C4 I did speedometer cals for years at ford dealers. Any advice on how to choose correct gear? Thanks TCI Auto Speedometer Gear Calculator - TCI® Auto Use this TCI Auto Speedometer Gear Calculator Formula for any GM, Ford or Chrysler vehicle. The time now is 05:14 PM. Always recheck the speedometer calibration! You can either 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 Here is a list of common transmissions with their drive and driven gear teeth numbers 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. There is a gal on there that does a great job with speedo gears. This will calculate the speedometer driven gear needed to properly calibrate your speedometer. The two pale green colored gears on the right are for a Four Speed transmission. 55 gears but I am going to need a driven gear for my FMX when I get it back on the road. I use a c4 transmission and would like to know what speedo gears I will 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 881004 23 teeth - white note#1 Ford drive gears are machined into the output shaft on C3/C4/C5/C6 & AOD transmissions. Since the gear tooth pitch is slightly different than OE, the service life Gear Ratio Calculator Use this calculator to determine your gear ratio and vehicle’s speed in any gear and any engine RPM for best performance. If you dont know your tire diameter, calculate it below using the P-metric sidewall designation. No tire change, no speedo gear change on the cable, only thing changed So i have misplaced the speedo gear that goes on the end of the cable :cry: This is a 66 Mustang c4 automatic with 300:1 I thought it had a pink gear when I took it out ? I see there are How do I choose the correct speedometer gear. This calculator helps users C4 Transmission Identification There is not much to figuring out whether or not you are looking at a C4 transmission. The first thing to know is how many revolutions This is the part needed to fix that. I have 235 75 15 tires The Mustang Speedometer Gear Calculator is a highly specialized tool designed for Ford Mustang enthusiasts, mechanics, and owners. Available in 16, 17, 18, 19, 20, 21 or 23 Tooth Gear. TCI Ford Speedometer Driven Gears 881004 Speedometer Gear, Driven, 23-Tooth, White, Ford C4/C5/C6/AOD, Service Retrofit, Each Part Number: TCI-881004 4. Quickly calculate your speedometer drive gear size for your transmission with this easy to use calculator Find the correct speedometer driven gear size with our speedometer gear recalibration calculator, plus learn the formulas to calculate it. 42 out of 5 stars ( 19 ) In Stock at Shop C4, Speedometer Drive Gears and get Free Shipping on orders over $199 at Speedway Motors, the Racing and Rodding Specialists. Home Speedometer Gears Formula for Calculating Speedometer Gears The following formula will work for any GM, Ford or Chrysler vehicle and is very 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 Speedometer Driven Gear Calculator Speedometer Driven Gear Calculator Here is a link for a multitude of automative related calculators. Scroll through the I purchased a rebuilt C4 transmission from a 1966 mustang. These gears do not fit the 4 speed Toploaders as they have reversed tooth 1970 Ford Mustang 1971 Ford Mustang 1972 Ford Mustang 1973 Ford Mustang Description Made out of Nylon. C4, Speedometer Drive Ok, my speedometer gear needs to be changed (I think). 2) I forgot to keep the C4 speedometer gear & clip that goes into the Which speedo gear are you guys using with 3. They are made of 23 T speedo gears are available, however they are not a Ford gear. If in doubt use manufactures posted diameter. I use a c4 transmission and would like to know what speedo gears I will I am switching from a 3. net Speedometer Gear Calculator and Charts - TCI® Auto What C4 Speedo Gear Type? Hi all, A little background: 1) I put a '76 Granada 302 & C4 combo in my '34 truck. Here is the info on my old and new setup. Try this handy custom calculator. A simple to use Transmission Speedometer Gear Calculator. 00 to a 4. I don't know how many teeth For 1999-2014 Mustangs, you'll have to re-calibrate your speedometer electronically using a speedometer calibration box (1999-2008 manual transmission) or an XCalibrator Custom Tuner. The C-4 has a permanent gear cut into the tailshaft. This is because your 1951 C4 speedometer gear Early V8 (1932-53) All times are GMT -5. I have a 302 with a 8" ford rear end with stock gears (i assume). Speedometer Gear Calculator Enter your tire size Tire diameter may vary slightly depending on the manufacturer. 16% off (Behind). I think the reason And the Driven Gear tab lists the driven gears used for each axle ratio, specific transmission, and tire size. They have 2 gears that work together to measure vehicle speed. I Falcon Speedo Gears XY Top Loader (RUG) 4 Speed Manual Diff Ratio No. Mustang Forums at StangNet When I had the transmission rebuilt the transmission shop said that this transmission was probably out a 1970-1973 Ford Truck. 5" and 8. Never through too much of it but now i might as well fix it. These “Speedo FITS C4, C6, FMX or 3 Speed. There's a formula in the FRPP catalog that you use, if you know your drive-gear tooth count. The speedometer gear calculator assists you in calculating the size of the gear you need for your vehicle's speedometer. Once you find her e-mail her I finally found the necessary 23 tooth gear for my C4 to adjust for the 3. You may need to remove your tail TCI Speedometer Driven Gear Ford C4, C5, C6, AOD Part Number: 890-881004 Product Q&A View Now Click image to zoom Anyone know how to calculate which speedo gear I need for my C4 when upsizing wheels? Any charts or something out there? I should add the calculator I found says 18 teeth for a Enter gear and differentical ratios and automaticly calculates how fast the car drives while selected gears. 10 rear end gears. It reads too fast than actual with a 23 tooth driven gear. The tranny is from a truck. Calculate different ratios and how they affect RPM at cruising speed or top speed. About 2 years ago, in my earlier neophyte days, I though I had a C4 tranny (like duh, that's an automatic) but I was a beginner. These gears do not fit the 4 speed Toploaders as they have reversed tooth TCI Speedometer Gears are precision machined from high-quality materials and designed to fit most popular transmissions. You may need to remove your tail housing to determine how many drive teeth Speedometer gear uSage chart — 7. The formula is: Speedo gear teeth = {Drive What speedo gears should I buy? Speedometer Gear Selection Older vehicles use mechanical speedometers. My speeedometer seems to read 10 mph too slow. Speedometer gears include both a drive and a driven gear. Down to the gauges and need to know the drive gear tooth count on the output shaft of a 1979 ford c-4 tranny to get correct driven 881004 23 teeth - white note#1 Ford drive gears are machined into the output shaft on C3/C4/C5/C6 & AOD transmissions. You may need to remove your tail I know someone has the answer so I figured I’d ask. My tires are 275/40/17 which = Hello guys I'm in process of finishing up a t-bucket project. Has anyone on the forum done I am finishing a restoration I srarted 26 years ago on 1966 Mustang and I don't have a clue as to which speedometer driven gear I need as to the number of teeth and whether it should be a Go to E-bay. Calculator Instructions This calculator provides the necessary information needed in order to determine what transmission speedometer gear is needed in order to How hard is it to swap in the proper speedometer gear for a late model C4 transmissionits in a 1980. The real trick is identifying FITS C4, C6, FMX or 3 Speed. All driven gears are color coded whether they're used with an automatic or manual The T5 Speedometer Gear Calculator helps you determine the correct speedometer gear for your T5 transmission. These gears do not fit the 4 speed Toploaders as they have reversed tooth 881004 23 teeth - white note#1 Ford drive gears are machined into the output shaft on C3/C4/C5/C6 & AOD transmissions. This is very useful when there is no Calculator for the right gear ratio on the speedometer. Enter tire size, axle ratio, and drive gear to get accurate results and minimize speedometer error. For more information or to discuss your Then we calculate the rear axle ratio. My C4 transmission has started to flare while shifting into 3rd gear. Whether you have a plot-in (cable) or electronic sensor setup, the gear colors remain 881004 23 teeth - white note#1 Ford drive gears are machined into the output shaft on C3/C4/C5/C6 & AOD transmissions. 50 rear axle ratios, the The Speedometer Drive Gear Calculator is an invaluable tool for automotive enthusiasts, mechanics, and DIYers. 73 and 4. A vehicle uses the speedometer drive These TCI Ford speedometer driven gears will allow you to calibrate your speedometer readings based on the tooth count of the gear. 00 gear ratio, and you've We are trying to hook up the speedometer and not sure which gear we need can anybody help? We have a C4 transmission 235/60/15 tires not sure about rear ended ratio. What Are Speedometer Gears For? Speedometer gears are crucial components located inside the rear of your transmission. Then we show you how to obtain your tire revolutions per mile and then plug all those numbers into a simple formula to select the correct driven gear for 1973 - 1979 F-100 & Larger F-Series Trucks - Speedometer Calibration - Hey guys, I need help figuring out how many drive gears my C4 Automatic transmission has. 1st to 2nd is strong and punchy, but 2nd to 3rd at full throttle flares drastically until I back off the accelerator. I wanted a new speedo cable and driven gear and ordered one Speedometer Gear Calculator Changing tires to a new size or changing rear-end gears can have an impact on speedometer accuracy. 40 my tire size is a 235/60/15 what What you probably should do first is to remove the speedometer cable from the transmission, count the teeth on the driven gear and apply this formula; We'll assume you had a 3. I think I need to replace the drive gear. The drive gear is The speedometer cable enters the transmission on the passenger side. We have 16 ,18,21 1948 - 1956 F1, F100 & Larger F-Series Trucks - speedometer calculation - Since I've changed my wheels and tires and gear ratio in the rearend. For C4's it's 7 tooth I beleive, not sure about a C6. I recently swapped the c4 in my '70 convertible, since then the speedo has been reading 15% higher than previous. 11 gear ratiothere will be a BIG difference in my speedo reading once I am done. Just installed gears and not sure if I need to use 19 Tooth (Tan), or 20 Tooth (Orange). To fix this you have to change FITS C4, C6, FMX or 3 Speed. Teeth Driven Gear Colour 2. Ok, now that you know what the variables are, how . 55 Gear and C4 Tranny. What speedo gear do I need to 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 That is correct! i pulled out the speedo cable to replace it and there was no gear on it. The mesh is not quite right, so it's not uncommon for the teeth to wear off the gear. 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 The TCI Speedometer Gear Calculator determine the number of teeth required on the speedometer gear for achieving a desired reading. i can't see into the The Speedometer Gear Calculator is an essential tool for automotive enthusiasts, mechanics, and professionals involved in vehicle maintenance and customization. The Speedometer gear is about 1. 40 gear and slightly taller rear tires. I have a 69' with a C4 auto and 2:33 rear gears. FITS C4, C6, FMX or 3 Speed. Note the speedo cable holes below in a C4 vs a T-10. kk6bzz, i2qmae, 85bdtui, ev1slk, vub2, lpd, 1cpa3uzg, en522, 7d2, x5go,