Rear End Gear Calculator

com Mustang Speedometer Gear Calculator! All you have to do is plug in your transmission, rear end gears and tire size information to get the most accurate part for your Stang!. Its a stronger, torque biasing, gear driven (no clutches to wear out and no friction modifier required), and more effective. But my axle code on the door ID sticker states my axle code is A02A, which according to several off raod sites is the 7. Enter the maximum potential safe engine RPM. Rear axle ratio Looking for the calculator or suggestions in fact probably better than a calculator! I am using a 3000 stall converter and 3:50 rear gears. 70 overdrive which is multiplied times the rear end ratio for the finial drive ratio in OD. 73 driveshaft rotations to turn your tires once around. Here is my version of gear calc. Gear Ratio/MPH Calculator Select one of the presets below to automatically fill in the boxes. The Dana 60 is the most desirable and most expensive axle for Mopars. cams & pistons. Installation of the correct ring and pinion gear ratio will help optimize performance, fuel economy and overall driveability. Quick Performance Inc. Use our Differential Gear Ratio Calculator page to determine the best ring and pinion gear ratio for your vehicle. There are two driven gear housings, one for 34 through 39 tooth driven gears and one for 40 through 45 tooth driven gears. Enter the tire size diameter and the target vehicle speed in MPH. Gear Ratio Calculator. Follow these steps to figure it out. I'm having a real problem finding out what gears my rear end has. You can also now calculate when using different transmission gear ratios, like in first gear or in overdrive. 09's is there wasn't a 4. Any change in rear gear ratios will also require a change in speedo gearing, if you want the speedo to read correctly. In-depth knowledge breakdown of the various components of a car. The numbers entered in the program are the integer number of teeth - just count 'em up. Enter transmission and rear tyre data in the yellow boxes. The number of rear axles will usually determine what axle truck it is. Engine RPM, or the speed at which the engine turns, can be calculated at any speed given the vehicle's tire size, axle ratio, and final transmission gear ratio. Choosing the right differential gear ratio will help regain lost power and torque. Equation and Calculators to determine Ratios of Planetary or Epicyclic Gear Assemblies. Use our gear ratio calculator to find the effective gear ratio your vehicle will have with a new tire size. 5" 14 Bolt - Rear Axle. 23 gear's (from 2. 27 gear, i was planning on trying that ratio out to start off and keep costs down. View all applications. Transmission Gear Calculator v2. 34 mph, and in 6th gear at the same rpm would be 79. A good way to calculate this is to multiply. We are interested in the combination of 5 factors which make up the gearing. And each table, except the final drive table, has scroll menus so you can change rpms and mph. 1968-69 Corvette rear axles were manufactured at Warren and are suffixed “W”. Circle Track Gear Calculator. 5" Ring Gear 2013, OE Solutions™ Rear Differential Ring and Pinion by Dorman®. 23 to one, 3. The next steps depend on the state of the planetary gears connected to the carrier, although all use the same formula. The presets on the right only change the Transmission Ratios, Final Drive Ratio and Engine Redline for the specific models. Speedometer Gear Calculator Choose your rear axle gear ratio: Here is a list of common transmissions with their drive and driven gear teeth numbers. rear end gears amc 20, 1969 amx: Post Reply : Page < 1 2: read the numbers right on the gear and replace the 30 year old lube. You should be able to find your gear ratio listed on the axle tag, however, if that has gone missing, you can simply count the number of teeth on each gear and divide the number of ring gear teeth by the number of pinion gear teeth. Gear Ratio: This calculation assumes the car's transmission is in drive or 1:1 ratio, no overdrive. Plus, you also add the necessary bearings, seals, and shims. Enter the maximum potential safe engine RPM. This calculator will help you compare the total cost of ownership of an UltraShift HV equipped truck compared to an Allison Automatic transmission equipped truck. 364) (R180) 240Z 70-73 MT 5spd. 5" 14 Bolt - Rear Axle. (Note: the symbol * indicates multiplication, and / indicates division). This calculator is for a 1:1 final drive ratio. Plus, you also add the necessary bearings, seals, and shims. A good way to calculate this is to multiply. Made in the USA closed tube rear ends, live axel rear ends, rebuilds. Because of this, American Trucks knows how important it is for you to have products available to you that allow you to accomplish your end goal. Transmissions and rear ends/differentials both have gear ratios. To use the Gear/MPH. Calculate gear ratio by dividing the number of teeth on the driven gear by the number of teeth on the driving gear. EVER WONDER WHAT happens to your Gear Ratio when you put on a Larger or Smaller Right Rear or how many RPMs you gain or lose by changing a set. It does not have a removable centre with studs and nuts that look like the skin tuning keys on a Banjo. This chart has been revised with actual ratios. Click here for Pinion Setting Tool Diagram Part Number Description ***Click on Part Number to Order*** 10002 8. The value will be returned in estimated differential gear ratio, based on the entered values. This calculation assumes the car's transmission is in drive or 1:1 ratio, no overdrive. Front vs Rear Tooth Changes. SPEEDS in GEARS with 12 inch WHEELS and STANDARD 3. The reality is the LS combination can easily get by with less gear (transmission and/or rear axle) than the little 302. 05 tire rotations for 2 engine rotations, which figures out to a rear end ratio of 3. Stagger Calculator(New and Improved!) Chassis Guide (Information being added!) Average Speed Calculator. Yukon products match the same high quality standards that we demand for our personal Rock Crawlers. Our Differential Gear Ratio Calculator can help you select the correct gear ratio to maximize the performance of your vehicle. I think the OP wants to keep his granny 4 speed. Using the chart, first determine what your original gear ratio and tire size are, then follow the lines to find your approximate RPM at 65 MPH. I jacked it up and marked the drive shaft then turned the wheel and it went 2-1/4 turns for 1 shaft turn. Gear ratios and compound gear ratios Working out simple gear ratios (two gears) A feature often requested in my gear program is that it should calculate and display the gear ratio. The smaller one is the driving gear and the larger the driven gear. Gear Ratio and Tire Size Calculator - 4x4 and Jeep Ring & Pinion When you change your tire size you need to make sure you have the right gearing to get optimal fuel economy and power. In mechanical engineering, a gear ratio is a direct measure of the ratio of the rotational speeds of two or more interlocking gears. Enter transmission and rear tyre data in the yellow boxes. Try to find a rear end that's the same year as yours - see gotcha's below! Ideally you would want a limited slip rear end but they are hard to find! Rear ends with 10" drums are preferred as they are bigger and have wider shoes - better stopping power! If you are not sure which gear ratio you should choose 3. GT4 -- AXLE REAR, 3. TCI Racing Calculators; 1/4 Mile Horsepower (HP) Converter Slip & Rear Gear. Use the appropriate socket and ratchet. The one I changed the rear gears in is a factory powerglide. SPEEDS in GEARS with 12 inch WHEELS and STANDARD 3. ) Tire Height - In Inches, Use The Gear Calculator or Tire Size Calculator Speedo Revs/Mile - Number of RPM the speedometer needs to turn at 60mph You can hit the SAMPLE button to see how some typical calculations will look. About BoostTown. In order to change the gear ratio on an all-wheel or 4-wheel drive vehicle, you will need to replace the ring and pinion on both the front and the rear differentials. Rear diff gear ratio. About Us Introduction Why MFactory? Contact Us. Enter the number of teeth on the Ring and Pinion gears and click the "Calculate" button to view your results. It will be safer to drive and far more reliable. The final ratio is usually considered seperate from the main transmission, kind of like the front sprocket on a bicycle. 1st gear ratio: 3rd gear ratio: 5th gear ratio: 2nd gear ratio:. Most MoPar overdrives have a. 5kbpistons,550liftsolidlifter camshaft,victor jr intake,willys 750gas carb,msd cranktrigger ignition with 7 al box,powergide with 8inch bte 4500 stall converter with trans brake,narrowed strange rearend with 33 spline axles,29/11. The same is true of the transmission final gear ratio. Alot of them came with 2:78 rear gears. Luckily, Late Model Restoration has put together this Mustang gear ratio to RPM chart to help identify which gears your Stang may have installed. * Lift the rear end of the vehicle off of the ground. The rugged, reliable, and efficient Chevy 12-bolt has established itself as the preeminent rear differential for GM muscle cars since its debut in 1965. Applicable years: all. In fact, they are every bit as important as the engine itself! If you don't have the right gear ratio, even with a super powerful engine, your car can end-up being a complete turd. Related Resources: gears. Choose top quality brands G2 Axle & Gear, Motive Gear. Make a line on the pinion yoke and onto the rear end with chalk or a grease pencil. Since you have a temp gauge, I’d start by following the tips and techniques described in this article. 30 gears (which is common with automatic transmissions), and a 2-pinion design (common in 4 cylinders). Marlin Crawler: The World's First Rock Crawling Company (since 1994). Enter the maximum potential safe engine RPM. 6 Rear, 1999 and newer Trucks. The next steps depend on the state of the planetary gears connected to the carrier, although all use the same formula. Easily find what you need from 1,611,422 parts available. 27 gear, i was planning on trying that ratio out to start off and keep costs down. 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 Gear Ratio Calculator. Differential Gear Ratio (also known as Final gear) Changing a diff to better suit larger wheels/tires is a good idea and in some cases is a must. eCart GEAR RATIO CALCULATOR. 12 X 38" = 4. This leads to different gear ratios and output rotation directions. We setup and install more Yukon Performance Ring and Pinion gears and lockers than anyone else. FI Products. , 1/4" wall), new brackets, new housing ends, new bushings, and 1350 yoke. See the chart below the table for typical ratios. It's been modified along the way to a point we are extremely happy with the result and even converted it into an App for iPhone and iPad. Pressing the "Reset" button loads the default values into the form. 73 to one, 3. Vehicle Weight (in pounds) Vehicle Horsepower: RPM through lights (finish line) Tire Diameter (Hght. From 1999 to 2001 can use but did not come with it. 9310 Ultra high strength steel, stone ground, cryogenic processed and REM® finished - The gear mesh area is only 1" wide eliminating friction. Step one in understanding axle ratios is to know what the numbers signify. Hope that helps a little. the rear end for a longer driveshaft ( less angle yet ); this high pinion differential is hard to beat. 00 Enter rim diameter in inches hereRim 17. Change Sprockets - Change Speed. Plus, you also add the necessary bearings, seals, and shims. Scroll to the bottom of this page to see the standards for the Mk III, Coupe, and GT40. ) Optimum rear gear based on tire, converter slip, MPH & RPM: Effective & Equivalent Gear Ratios based on New and Old tire heights and original gear. In fact, they are every bit as important as the engine itself! If you don't have the right gear ratio, even with a super powerful engine, your car can end-up being a complete turd. A gear increaser reduces torque and increases speed. If you need help choosing a gear ratio, Summit sales reps can help or you can use the Gear Ratio Calculator on Summit's website to narrow down your choices. RPM Calculator Input - Note: Currently using 94-95 T5 specs and 3. Use our simple Gear Ratio Calculator to quickly find the correct gear ratio for your ring and pinion gear set. And I'm going to be running 33"s. We have developed this chart to help you select the optimum gear ratio to put your performance back where you want it. 2019 Reilly MotorSports, Inc. With an overdrive transmission your RPM in overdrive will be 15% to 30% less than indicated. 10 front D60 gear made in 1974. Gear motors can also be used on vehicles with smaller wheels if a slow top speed and a high amount of torque for uphill climbing or driving through sand or mud is required. Differential Gear Ratio (also known as Final gear) Changing a diff to better suit larger wheels/tires is a good idea and in some cases is a must. All our reman components are remanufactured under strict ISO 2001:2015 quality control standards. With Gear Ratio Calculator you can see the theoretical top speeds in all gears. It will help you to find the best gear ratios for your racing car and to understand when it is the best time to change a gear. Your differential is the set of gears that allows your vehicle’s driven wheels to revolve at different speeds by splitting your engine torque in two ways. If you cannot view these PDF files: iPhone users: The Safari Web Browser must be used in order to view PDF files Smart Phone users: might need to download the free app called "Adobe Reader" or any other PDF reader app. Click on Calculate. Includes chart. The Dana 60 is the most desirable and most expensive axle for Mopars. Lifetime Access Free Download PDF Teds Woodworking Plan Free woodworking advice daily at the Woodcraft of Austin!. It is also important to know the ratio as well as tire size to determine which speedometer gear you need so your speedometer reads accurately. This chart has been revised with actual ratios. Ford axles use a similar metal tag on the axle itself that identifies gear ratio, differential type and manufacturing information, according to Differentials. Gear calculator solving for velocity or speed MPH given tire radius, Gear Design Equations Calculator four wheel drive rear axle differential, transfer. The transmission has it's ratios for gears 1-5 or whatever. The axle ratio refers to the gears in the truck’s differential, which is a mechanical device that links the rear axle to the driveshaft and then the engine. 5 Guides to Help You Set Up Your Ring and Pinion Gears Setting up gears can be a pretty daunting task even for those of us that are are very mechanically inclined. You should be able to find your gear ratio listed on the axle tag, however, if that has gone missing, you can simply count the number of teeth on each gear and divide the number of ring gear teeth by the number of pinion gear teeth. SPEEDS in GEARS with 12 inch WHEELS and STANDARD 3. com The following formula has been developed to calculate the optimum final Gear Ratio to suit your application. The driven gear is the one which is "driven" by the "drive" gear, and is connected to the speedometer cable or electronic sender. Enter ALL of the sizes of your rear gear cassette (smallest to largest). Making Your Speedometer Gear Accurate By Dan Davis. 22 final at a 3/8, rpm is about 6800-7000, granted its in a street stock, tire size is 83 inch. Gear Ratio: This calculation assumes the car's transmission is in drive or 1:1 ratio, no overdrive. It will be safer to drive and far more reliable. To use the Gear/MPH. I grew up around raunchy cammed NA motors with 4. Calculated accuracy of most browsers is generally 16 places. FI Products. 08: 40/13: WE: YE: 1965: GTO: 3. CRF's Only Gear - RPM - Speed Calculator Please read disclaimer. rpm, tire size, speed, differential ratio battery pack capacity. com BMX Gear Calculator over a decade ago. The driven gear is the one which is "driven" by the "drive" gear, and is connected to the speedometer cable or electronic sender. This is the Diff Ratio Guide. 1957-1964 Pontiac/Oldsmobile 9. cover in a couple of days, if I end up with another 3. then the driveshaft speed = engine speed divided by tranny gear ratio R1 = ( 6000 / R1) revolutions/minute and the rear axle speed = driveshaft speed divided by rear-end ratio R2 = ( 6000 / (R1*R2) ) revolutions per minute (where * indicates multiplication, and / indicates division). A gear ratio chart can be extremely useful to save you from doing the math. Gear Ratio and Tire Size Chart NEXT PAGE This gear ratio and tire diameter chart is meant to give you an approximation of ideal RPMs at highway speed (65 mph) for three situations: fuel economy, every day driving and increased towing power. 2008 Jeep Wrangler 3. Easily find parts for ring and pinion gears, differentials, axle shafts, manual transmission parts, and transfer case parts, using our easy eCatalog. 09 gears (45 ring gear teeth and 11 pinion teeth) the ratios don't match exactly. 08's (he used it for top end runs ala Silver State Classic). Everything else is interchangeable. Stagger Calculator(New and Improved!) Chassis Guide (Information being added!) Average Speed Calculator. For example, a 3. Let’s take a hypothetical engine with 500 ft. Last but certainly not least, you need to consider whether your vehicle will benefit more from a performance gear style or a pro gear style. If a car has less than 6 speeds, only enter numbers for the ratios that apply (i. An important thing to note is that the ring gear bolts are. : this calculator allows you to enter 3 of four variables and it will compute the other based on your input. The constant "1,000" is used since it is the RPM of the Thunderbird SC speedometer at 60 MPH. Optimum tire height based on MPH, RPM, converter slip & rear gear: Tire Height based on sidewall designation : Tire Width (mm) and Aspect Ratio based on height and width (in. You can also now calculate when using different transmission gear ratios, like in first gear or in overdrive. Gear Trans Ratio Final Ratio 1000 RPM 1500 RPM 2000 RPM 2500 RPM 3000 RPM 3500 RPM 4000 RPM 4500 RPM 5000. He destroyed the rear end and gears. Performance Calculators - Engine Displacement, Horsepower, Speed From RPM, Size of Carb Needed, Fuel Pressure, Altitude Density and more! Rear End Gear Needed. Most four-wheel drive vehicles have both front and rear differentials. Here is my confusion. 717-764-9844. look to the left of the graph to see the corresponding rear-end gear. If you have a Stock Cassette and can find it in his list then go ahead and choose it. If you're curious how changing ratios will affect your gearing, this tool will remove the guesswork. 1970 Dodge Challenger Parts - Rear End. The standard open differential works great for this application, but has its shortcomings when it comes to off road and performance driving. Fuel Estimation. The rear axle ratio of your car is instrumental in determining which transmission gear set is best suited for your car. At the hit, you've got a transmission gear as a multiplier and also the ring & pinion. Use this gear ratio calculator to select the best ring & pinion and gear ratio combinations to serve your needs. Vander Haag's Inc has multiple midwest locations with Service Shops, Part Sales, and is a licensed Truck & Trailer Dealer. I jacked it up and marked the drive shaft then turned the wheel and it went 2-1/4 turns for 1 shaft turn. Gear motors can also be used on vehicles with smaller wheels if a slow top speed and a high amount of torque for uphill climbing or driving through sand or mud is required. ) in Inches. Iwouldn't waste my time on the 8. You probably can use the whole wire-wheel axle with a combination of spacers and/or minimal-offset disc wheels since the wheels will then be 7/8" closer to the center on each side. FI Products. These gears come in different ratios, which greatly affect the performance of the car. Ford axles use a similar metal tag on the axle itself that identifies gear ratio, differential type and manufacturing information, according to Differentials. Since the 1999 Model year the factory fill for the rear axle of all trucks has been 75W-90 Synthetic Gear Lube. 10 gears? Explorer rear axles had 4. Re: What is the front/rear gear ratio on an m7040? If you new your transmission gear ratios you could use a gear calculator to get close. What you do: Choose a gear ratio that gives you the traction, acceleration and top speed you want. ) Tire Height - In Inches, Use The Gear Calculator or Tire Size Calculator Speedo Revs/Mile - Number of RPM the speedometer needs to turn at 60mph You can hit the SAMPLE button to see how some typical calculations will look. 5-inch differentials. Gears with 25 teeth or less require a different speedometer adapter. Alot of them came with 2:78 rear gears. Your primary drive, transmission and rear drive sprockets all combine to determine your cruising rpm as well as your final top speed. 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. If you do not know this ratio, you can simply put in 1. Here's a rpm/speed/gear ratio calculator you can use to see some actual numbers Randy's Ring & Pinion. The value will be returned in estimated differential gear ratio, based on the entered values. A plus (+) number, minus (–) number or zero (0) is etched into the face of the pinion gear (2). View all applications. 11) Rear Tire Height (Tire Diameter in Inches) Drive Gear Teeth * 4. Originally it a a straight six engine with a 4 speed manual trans w granny low. For example, car engines, drills, lathes, mills, cd/dvd players, printers, mechanical watches, children's toys, in fact gears are almost everywhere there are motors and engines which produce a rotational movement. 73 to one, 3. Scroll to the bottom of this page to see the standards for the Mk III, Coupe, and GT40. I'd love to try something around 3. Our Differential Gear Ratio Calculator can help you select the correct gear ratio to maximize the performance of your vehicle. It allows to calculate spead depends of wheel size, engine's RPMs and sprockets sizes in standard engine set and Shift Kit with standard bikes gears on rear wheel. 24-Oct-2019-AM : Search For Pulley Size And Rpm Calculator For Rear End Gear. The Chart below shows E36 E46 E90 E91 E92 E93 E85 E86 E83 E82 E88 transmission gear ratios. Our car has the 2. Will pull rear diff. Hope that helps a little. Series of Carrier To determine which gear sizes are compatible with your current rear-end setup, you need to know the series of differential carrier, especially when dealing with GM and Dana applications. The rear axle gear ratio is the number of turns that the input of the differential at the driveshaft makes in relation to its output at the rear wheels. For many performance cars, 3. How to Determine Gear Ratio. Yukon products match the same high quality standards that we demand for our personal Rock Crawlers. 75-inch, and GM 8. All Land Rover manual gearboxes Ashcroft high ratio transfer case. Related Resources: gears. 52 and multiplying that by the 4. long-time trucker. CID to Liter Conversion. From RPM to metric conversion, we aim to have what you’re looking for. High pinion rear = coast side of gears Low pinion rear = drive side of gears High pinion front = drive side of gears Low pinion front = coast side of gears The following statements are when moving forward. On front-wheel-drive cars, excessive front differential locking can cause understeer. The legs give this piece a light, airy feel, while strong joinery keeps it stable and sturdy. The primary purpose of this calculator is to answer the question: "How heavy a fifth wheel can I tow with my truck?" This calculator is designed for fifth wheel trailers, towed by a fifth wheel hitch mounted in the bed of a truck above the rear axle. The second calculator allows you to actually input any EXACT transmission final gear ratio. Gear Ratios for Miatas. Axle Advice Rear Axle Breaks at Speed. Silver Sport Transmissions offers TREMEC TKO 5-Speed, TREMEC Magnum 6-Speed, and A41 4-Speed Automatic PerfectFit conversion kits for GM, Ford, Mopar & AMC. Iwouldn't waste my time on the 8. All Moser 9 Ford housings are made with new Heavy Duty housing cores, seamless steel tubing (3" O. Transmissions and rear ends/differentials both have gear ratios. 73 to one, 3. 11 rear would give you 10. The manual says there are 3 gear sets that it could be. ) Optimum rear gear based on tire, converter slip, MPH & RPM: Effective & Equivalent Gear Ratios based on New and Old tire heights and original gear. 55, it if was 4x4 it had a 3. 0" Ring Gear 2003, OE Solutions™ Rear Differential Ring and Pinion by Dorman®. I originally went with 3. Made from high quality 8620 forgings and Gleason gear cutting technology, these gears are made to last. Gear Ratio Speed Calculator By David Nguyen Calculate theoretical speed for a car in each of its gear ratios. A gear increaser reduces torque and increases speed. Axle ratios are expressed in numeric values. For example, two rear axles is called a tandem truck and three rear axles is called a tridem truck. 73 gear ratio requires 3. EndTuning - A simple calculator to work out what road speed you will achieve at a given RPM, or calculate your RPMs from a given road speed. My Porsche runs like a scalded ape in first gear and it's overall ratio is 13. 76) with my factory tires to 4. See bottom of page for pinion angle recommendations. If you know four out of five of these values, you can determine. Use our simple Gear Ratio Calculator to quickly find the correct gear ratio for your ring and pinion gear set. If you have ever wondered what the gear ratio is in your rear-wheel drive vehicle and. Calculate Rear End Gear Ratio needed. 75 times to turn wheel once, that is fastest gear I have seen on here. Enter the Rearend Gear Ratio, the 1/4 Mile MPH, the RPM, the Transmission top gear. Differential Gear Ratio (also known as Final gear) Changing a diff to better suit larger wheels/tires is a good idea and in some cases is a must. Vehicle Weight (in pounds) Vehicle Horsepower: RPM through lights (finish line) Tire Diameter (Hght. 73 to one, and 4. 12 X 38" = 4. 5" 14 Bolt. Drive Gear Teeth - The Number of teeth for the transmission; Rear End - Rear Gear Ratio (3. 09 gears (45 ring gear teeth and 11 pinion teeth) the ratios don't match exactly. 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 calculate, and you'll get the right ratio without the guesswork. What is a rear differential? The rear differential is the "box" where the rear drive shaft meets the two rear axles. 75-inch, and GM 8. 52 mpg and i can go on with my fuel up, my rear ends are 355 with a 10 speed auto shift i have a pre egr motor so that does help with the. A gear increaser reduces torque and increases speed. The rear axle gear ratio is the number of turns that the input of the differential at the driveshaft makes in relation to its output at the rear wheels. In mechanical engineering, a gear ratio is a direct measure of the ratio of the rotational speeds of two or more interlocking gears. You have to be careful about the starting rear end ratio to avoid having a final drive that is too high for the engine to pull without high loads. At 60MPH, 1 tooth = 2 – 3mph. Gear Ratios for Miatas. 5inch tall tires. EndTuning - A simple calculator to work out what road speed you will achieve at a given RPM, or calculate your RPMs from a given road speed. Sierra Gear & Axle is a premium line of light-duty differential parts. For Overdrive cars mutliply the overdrive ratio times the rear and gear ratio. How to pick a gear ratio: A lot of thought goes into picking the rear end gears. 10's, but I'm not sure about Rangers. A 4x4 Differential Gear Ratio Chart Table. and it originally had 410 gears. Includes chart. Rear end gear installation kits from Strange Engineering. This calculator is for a 1:1 final drive ratio. 00 Enter metric tire profile % hereProfile 70. It represents our differential and gearbox repair experience. Referring to the top example above, the first letter in the code "G" denotes the ring gear diff size of the rear axle. Learn more about Car Speed Calculator. This will be able to demonstrate increases with In-Gear speeds for increase RPM limiters. Our product range is continually growing to meet the needs of consumers for new ratios and applications. Now, I am looking for opinions on best gear ratios between the tranny & rear. Factors to consider: 1. The below link will give you the RPM with your transmission at speed. If you are buying a 2012 with the new rear end you will have to go with the factory limited slip as its the only game in town as of now. Calculator for the right gear ratio on the speedometer. Winters Performance quick change gears, quick change rear end gears, quick change gear cover gaskets, Winters gear chart, quick change drain pan and quick change gear totes are sold at Capital Motorsports. 3D DIFFERENTIAL DESIGN.