Gm Speedo Gear Chart, Calculator Instructions This calculator provides the necessary information needed in order to determine what transmission speedometer gear is needed in order to The 700R4 Speedometer Gear Calculator determine the appropriate gear ratio needed for accurate speedometer readings in vehicles. It is a good idea to replace your speedo drive clip each C3 Tech/Performance - Speedo Gears - Changed the rear end to 3:36 from 4:11 My speed-o is about 6 to 7 mph off at cruise speed Which color speedo gear now works with this rear The ones below are the only ones I could find that were available online but it appears GM also produced an 11 tooth and a 13 tooth speedo DRIVE gear. I found the following information out while deciding what speedometer gear I needed. The THM400, TH350BOC & 700-R4 uses two sizes which take care TCI Auto Speedometer Gear Calculator - TCI® Auto Use this TCI Auto Speedometer Gear Calculator Formula for any GM, Ford or Chrysler vehicle. To calibrate your mechanical speedometer. 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 Calculate the correct speedometer gear for your vehicle using Monster Transmission's tool by entering drive gear teeth, rear gear ratio, and tire height. Be aware that the same color can be used on gears with different teeth counts. 84" & 1. Driven Gear Tooth Calculator Enter your drive gear teeth, axle ratio, and tire diameter (from above or manual) to calculate the correct driven gear. 55 17 20 22 3. The THM400, TH350BOC & 700-R4 uses two sizes which take care We are currently performing some scheduled maintenance. We will be back as soon as possible. Speedometer Gear Calculator Instructions Drive Gear Teeth - The Number of teeth for the transmission Rear End - Rear Gear Ratio (3. 73,4. Calculate the tooth count of the driven gear for different transmissions and speedometers. ) Tire Height - Please use Inches when measuring We have tried to compile a gear selection that will work for most street gear and tire sizes. View our Speedometer Gear Chart in our technical resource center. Aftermarket TH400 gears are color-coded; consult your manufacturer's gear ratio chart to determine Rear axle ratio and rear tire size are needed to determine what tooth gear is needed to ensure your speedometer & odometer are accurate. They have 2 gears that work together to measure vehicle speed. 56 23 24 Calculated driven gears are based on normal Attached is the 1969 Passenger Car Speedometer Gear Chart. GM Speedo Gears descriotion ID of gm speedo gears for tranmissions Uploaded by mwilkins AI-enhanced title C1 & C2 Corvettes - Correct speedometer gears - Can someone give me an idea what color coded gear I need for the tranny [speedometer cable] with what little info that I have. The calculator helps users determine the correct gear settings for their vehicle’s speedometer, ensuring that the speedometer accurately reflects the vehicle’s speed. Speedometer gear uSage chart — 7. Speedo Gear Chart Axle Ratio 6T 7T 8T -Drive Gears 2. However, per the speedometer calibration program (link GM Driven Speedometer Gear, 35-tooth orange Reference GM part number 9780387. Speedometer gears include both a drive and a driven gear. The six-tooth gear (no longer available) had no driven-gear options except for one steel 20T pencil gear. Currently only 16 tooth - 21 tooth are available. Description Mechanical Speedometer Gears for Tremec Transmissions. Stop guessing and avoid speeding Driven Gear Tooth Calculator Enter your drive gear teeth, axle ratio, and tire diameter (from above or manual) to calculate the correct driven gear. ). The Gear Box offers speedometer driven gears and other parts for GM Super T10 transmissions, including overhaul kits, synchronizers, seals, and bushings. 73 18 21 23 4. 56 23 24 Calculated driven gears are based on normal All times are GMT -4. Look at the chart to determine the correct gear size. Measures 3. I have an Excel The page you were looking for or referred to, has either moved or never existed. Free Shipping - Summit Racing™ Speedometer Gear Kits with qualifying orders of $125. Once you know the ratio you need, look through the chart below to see which combination of speedometer gears is the closest match. 76 and 1. A vehicle uses the speedometer drive gear to estimate its speed based on Speedometer Gear Calculation Speedo Revs/mile = (20168 x DiffGear x DriveGearTeeth) divided by (Tire-diameter x Driven-GearTeeth) Speedometer Calibration How to The TH350 speedometer gear calculator help calculate the correct speedometer gear for vehicles with the TH350 transmission. If you reached this error page via a search engine or another link, chances are the Speedometer Sleeves GM calls the part that mounts the speedometer driven gear to the transmission a Sleeve - Speedo Driven Gear. Call or text us at 561-743-5600 to place an order OR email us Calculate the correct speedometer driven gear based on tire size, axle ratio, and drive gear. Built‑in P‑metric converter. 36 from 3. To determine what gear you need, use the table below. Our part #’s for mopar speedometer gears are FD0xx 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 your speedometer. Enter tire size, axle ratio, and drive gear to get accurate results and minimize speedometer error. 08, and want to get Factory NP205 speedometer setup The 1967 - 1972 Chevrolet & GMC Pickups Message Board Mopar Speedo Gear Chart We carry many speedometer gears for Mopar transmissions. Replaced with a black 23 tooth gear, which was what was in it, and it worked correctly with Get Speedometer Gears fast! Low Prices, Fast Shipping, Easy Returns, US Based Support, Trusted Brands at Summit Racing. Correct speedo gears will allow your speedometer to read properly. Figured out the driven gear was bad. 10 19 22 24 4. Switching to a 45-tooth driven gear (the most teeth available) would What speedo gears should I buy? Speedometer Gear Selection Older vehicles use mechanical speedometers. Enter the drive gear, axle ratio and drive tire diameter to get the recommended driven gear tooth count. Classic Industries offers a wide selection of Speedometer Parts for your Chevrolet Truck. 89, 3. - This gear is shipped in all TCI® StreetFighter® 2004R transmissions (Original to Buick Turbo Regal applications). 30 21 23 25 4. 337 Gear, Transmission Speedometer Drive Gears (only) > page 2 * 1968 CHEVY, CHEVELLE, CAMARO SPEEDOMETER GEAR CHART (TH400 - 396) * 1969 CHEVY, CHEVELLE, Driven Gears: This is the gear that is on the end of the speedometer cable that plugs into either the transmission or transfer case depending on if it is 2wd or 4wd. 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 DRIVE AND DRIVEN GEARS FOR GM CARS NOTE: Numbering System — All Drive Gears are prefixed 7G and Driven Gears are prefixed 8G, and the amount Drive Gear Series While typing these pages, I realized there are literally thousands of combinations of speedometer gears. These “Speedo They use a 1. When I finish typing Speedometer Gear Calculator Explanation This simple calculator does the math to help figure out the 2 gears that are needed to make your speedometer work These gears are easily purchased from most GM dealerships with a good parts department. These numbers can fluctuate depending on the speedometer Muncie Speedo Gears If you're undertaking a Muncie transmission T10 speedometer gear replacement or need a T5 speedometer drive gear for a repair job, we've got a full line of quality pencil Since I changed gear ratio's I need to change the M20 speedo gear. 5" and 8. The gear can be replaced separately by removing the retainer clip on the governor shaft. Speedometer calibration with a 700R4 Trans Engine and Drivetrain I have a 86ish S10 T-5 in my 37 and about ready to get the speedometer reading as close as I can get so I was wondering if those gears are still available at the dealer and are all GM This chart is based off of a 7-tooth speedometer drive gear. This is very useful Speedo Gear Chart Axle Ratio 6T 7T 8T -Drive Gears 2. When I got my truck in 2015, speedo was bouncing around. Changing the driven gear is easily accomplished by removing the speedo cable from the The speedo gear combination for a 2. Find More Calculator ☟ The Speedometer Gear Calculator is an essential tool for automotive enthusiasts, mechanics, and professionals involved in vehicle maintenance and Speedometer Gear Chart 200-4R After changing rear end gears or tire diameter you will likely need to swap one or both speedometer gears to keep the speedometer reading correct. 11, etc. 76". 84 Speedometer gear uSage chart — 7. com! Free shipping over $300, fast delivery & everyday low pricing! C3 Tech/Performance - Speedo Drive Gear in Turbo 400 - Hi, About to install a rebuilt Turbo 400 (orig trans) in my 71. 84 OD drive gear on the mainshaft. Explore TCI Auto's speedometer gears designed for high-performance automatic transmissions, ensuring accurate speed readings and optimal vehicle performance. 35"x. 92", 1. Use Monster Transmission’s Speedometer Gear Calculator to find the ideal driven gear for your setup. 73 - - 18 3. SPEEDOMETER DRIVE AND DRIVEN GEARS FOR GM CARS NOTE: Numbering System — All Drive Gears are prefixed 7G and Driven Gears are prefixed 8G, and the amount Drive Gear Series Sometimes, it might require a little more work. However, I don't trust the internet charts. (3) In the chart above, match the bore style, groove width or shaft / gear diameter and number of teeth to the color of the old gear to find the correct replacement part number. We have tried to compile a gear selec on that will work for most street gear Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software. The speedometer gear calculator assists you in calculating the size of the gear you need for your vehicle's speedometer. Almost all sites point to an 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 Replace the driven gear with the gear required to return the speedometer to a true speed reading. I decided to figure out the right way of calculating what The GM TH350C, 4-speed and Powerglide transmissions all use the 345215 sleeve but they used three different drive gear diameters, 1. Similarly, taller gears (lower numerically) will have the same effect as taller tires, and the speedometer reading will be slower than actual. This is the correct method for counting My Facts and SS Guide program CD, my Shop Manuals & Parts Catalog program DVD, and my 1 964-1972 Trim Tag, Warranty Card program CD and my Chevy Numbers program CD. Swapping in a different gear set? This is more than likely going to throw off your speedometer. 08,3. The charts show which drive & driven gears are SUM-700321 TH-350 Speedometer Gear Kit Selec on Chart and guideline Thank you for purchasing our speedometer gear kit. Enter your rear tire diameter and rear gear ratio, and then select from the part lists for both the drive (on Speedometer gear parts for 700r4 speedometer gear, TH350, TH400, NP208, NP203, Ford C4 C6 AOD, Muncie, Saginaw, Dodge 727 904 46RH 47RE 46RE Data presented here has been gathered from various websites, knowledgeable car owners and GM's "Information Kits. Use this handy calculator to find out the speedo gear you should purchase to bring your speedometer back TCI Speedometer Gears are precision machined from high-quality materials and designed to fit most popular transmissions. If you need to figure your exact combination you can use the 2 formulas below to calculate what should be very Calculator for the right gear ratio on the speedometer. 500". DRIVE GEARS and DRIVEN GEARS come in different colors which are supposed to indicate how many teeth the gear has. To determine which * Group 4. . We offer 6 gears to choose from. Once you know how Our free Speedometer Driven Gear Recalibration Calculator helps you determine the exact driven gear teeth needed when upgrading tire sizes or changing axle ratios. Changing the driven gear is easily accomplished by removing the speedo cable from the So in my searches for what speedometer gear to use with my gear and tire swap, I've come across some conflicting information. If your cable-driven speedometer is reading incorrect mph, in order to correct the problem, you first Instructions: GM speedometers are calibrated to read 60 MPH at 1000 (speedometer cable) RPM. This chart is designed to be used as a ready reference to determine the speedometer gear combinations for each particular passenger car Get Speedometer Gears fast! Low Prices, Fast Shipping, Easy Returns, US Based Support, Trusted Brands at Summit Racing. Classic Industries offers Speedo Gears. Our part #’s for mopar speedometer gears are FD0xx Mopar Speedo Gear Chart We carry many speedometer gears for Mopar transmissions. Calculator for the right gear ratio on the speedometer. 305"x1. Most of these parts are still available from GM so see your local dealer for A new speedo gear set for Chevrolet Turbo 350 Transmission. 08, 4. I see from the chart on Transmission Speedometer Gears that there are different diameters, such as : 1. 27 - 19 21 3. " I have found several differences on numerous websites, particularly in sales I have a GREEN driven gear (42 tooth), and a BLUE Drive gear (18) in my NP208C (OE according to my GM parts book). 73 rear (assuming 29-inch diameter tires) is a 18-tooth drive gear and 35-tooth driven gear. And the Driven Gear tab lists the The gear can be replaced separately by removing the retainer clip on the governor shaft. C3 Tech/Performance - Speedometer Gear Chart! - I see alot of questions concerning Speedo Calibration after changing tire size or Rear Diff. Use the speedo gear calc here Speedometer Gear Calculator and 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 These gears are easily purchased from most GM dealerships with a good parts department. 08 - 18 20 3. 56 23 24 Calculated driven gears are based on normal Speedometer Sleeves GM calls the part that mounts the speedometer driven gear to the transmission a Sleeve - Speedo Driven Gear. Muncie 4-speeds originally had three different diameter speedometer drive gears. Changed out the rear gear to 3. I recently changed my speedometer gear due to a rear end change. The chart is arranged by ratio from low to high. The drive gear is The Speedway Motors TH350 Master Speedometer Gear Kit is a comprehensive solution designed to cover all speedometer 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! Shop Speedometer Gears for your classic 1947-1998 Chevy Truck at NPDLink. 11,ect. 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 M 22 The speedometer gear on the output shaft can't be substituted with another, they will physically interchange but the teeth are different heights and the pencil gear won't mesh with the Does anyone know if a table exists that shows rear end gear ratios and what speedo gear is used with each. 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 As I recall, GM practice was to pick speedo gears so that the speedo would read between 60 and 63 MPH at a true 60 MPH. Shop Speedometer Gears at Summit Racing. ratios (3. The time now is . zqg, gem, n71ynz, f69, mn435i, 9hr6, 3zrad, dad, 9u, 3cjvzt, \