Powerglide Gear Ratio Calculator


Starting Line Ratio Calculator Wallace Racing BACK to Calculators Use this calculator to see what your starting line ratio is. (The driven gears also fit Aluminum Powerglide, Super T-10 and Chevy T5 transmissions. The Buick version, which followed shortly thereafter, was known as the Super-Turbine 400. I am trying to get a few projects lined up so when I get back up on my feet after December 8th's surgery I can get to work on them. We'll work to keep you motivated and informed and with industry news, product information and reviews, event coverage, and well-curated articles and. 11 ratio gear set, quick release pro tree transbrake valve body, 9310 Chromoly input shaft choice of turbo or powerglide spline, 8 clutch high gear drum with wide steel hub, Kevlar band, Torrington roller bearing, deep aluminum pan, rollerized billet aluminum governor support, billet aluminum. 00 Formula to calculate Gear Ratio based. See the chart below the table for typical ratios. I am looking to go to 33x15 tires and a 488 or 513 gear , but need to know how to calculate what my rpm will be with gear changes. 76 ratio gear-set. The General Motors Turbo 350 and Turbo 400 automatic transmissions are perhaps the automaker's most popular ever produced. Click on Calculate Effective Ratio = (Old tire height / New tire height) * Original ratio. the vega right now runs 6. 80 and third gear is a 1. Operation of Hydraulic Controls When Shifting Out of Direct Drive. Choose from many gear options with a variety of tooth counts. Emergency Service. CALCULATORS. If your car originally was equipped with the Turboglide auto trans the standard rear axle ratio was 3. Was this site helpful?. Order Parts. The General Motors Turbo 350 and Turbo 400 automatic transmissions are perhaps the automaker's most popular ever produced. Derailleur Gear Ratio Calculator Following a number of requests over in the forum, we decided to add a tool to enable you to easily calculate the gear ratios fitted to your bike. Pump Bushing, 350/400/PG/AT540, Teflon Coated Transtar Part Number: 44034T. They are roomy, with tastefully restrained, period use tail fins and chrome. Planetary Epicyclic Gear Ratios Equations and Calculators. FTI Offers a wide variety and ratio of Drag Racing and Mud Racing Powerglide Transmission gear sets for standard length powerglides and shorty glides. It tells you how many revolutions the crankshaft turns to move your car one foot. Enter the tire size diameter and the target vehicle speed in MPH. Hello everyone, I'm thinking about changing the low gear ratio in my powerglide used for bracket racing. Instructions: Use this calculator to estimate various aspects of your performance. 2 MOPAR automatic 5. Gear Ratio The identification code will tell you the gear ratio, if it is a posi, and in some cases what engine and transmission the car is equipped with. While the original two-speed Powerglide continued unchanged, Turboglide provided a continuously variable gear-ratio which made "shifting" imperceptible. Solve for your Crawl Ratio. These blocks are machined to accept Evolution tappets, so you get the benefits of Evo technology, including higher revs and lower maintenance in your shovelhead motor. Find TCI Powerglide Replacement Gears 747500 and get Free Shipping on Orders Over $99 at Summit Racing! These TCI Powerglide replacement gears are 1. Don't forget to Like, Share and Subscribe!. The number of turns of the wheel is the gear ratio. BMX Ultra has created a really great rollout calculator that tells you exactly what the distance is covered by 1 full crank rotation based on your tire size and gears. 1)the tires are the IMCA McClearys also would that gear also work for a 3/8 track running glide in low. BTE072473. If your car originally was equipped with the Turboglide auto trans the standard rear axle ratio was 3. This was one of the top of the line motor combinations of the day. net website for personalized autographed copy. CALCULATORS. com Calculate the theoretical speed for a car in each of its gear ratios. Most of the V8/Powerglide transmissions came with the 1. If your engine is a potent low-end engine, you'll give up a good chunk of driveability for just a little extra acceleration. This is a much lower ratio than what was common, and provides good acceleration from a stop and is also good for off-road driving. It would not have been sold with a 3. The stall phase actually lasts for a brief period when the load (e. Its saying it needs a 4. The 242 premiered in the XJ Cherokee / Wagoneer and MJ Commache as the SelecTrac option. Instructions. Using Drag Strip Analyzer my best gearing worked out using a stock geared th350 and a 4. Powerglide transmission with a 1. Split Ring Compound Planet Epicyclic Gearing is an awesome arrangement of gears that let you have really high gear ratios in just two stages of gearing. Choice of 9310 Chromoly 1. The 20 and 21 tooth Powerglide gears have a. Drive Gear Teeth - The Number of teeth for the transmission; Rear End - Rear Gear Ratio (3. 6th Gear Ratio Calculator requires a subscription. Gear ratio calculator for your Chevrolet. The fourth gear was the overdrive with a. You can get lower first gear ratios but I don't think I have seen a change in the second gear ratios. Also calculated is the new gearing you would need in order to return back to your original gear ratio when going to a bigger or smaller tire. One of the planetary gearsets from our transmission has a ring gear with 72 teeth and a sun gear with 30 teeth. This lets you create gearboxes that are. 91 in my 63 for a number of years. Don't stop posting if you have any ideas or interesting combos. If you would like to find a value other than speed, fill in information for all the boxes and clear the value in box you would like an answer for. Made in the USA, BTE has gear sets available in multiple lengths and ratios. Engine RPM at Cruise Speed Example: If you want to Cruise at 60 MPH at 2000 RPM and your Tire Diameteris 30", the Gear Ratioyou need is a 3. Working out the tooth counts for planetary gears is actually not that complicated, so I initially neglected to mention how to do it. 84 without loss of top end. Our Technical Support Staff can help you choose from our wide variety of gear ratios to suite your needs. When you upshift the first case section, that section goes to a 1:00:1 ratio, which creates 2nd gear. Performance. Tiffin Motorhomes, Inc. Largest Main Shaft in the Industry. Gear ratio calculator; Gear ratio calculator. Produced in low volume from 1968 to 1971, the M22 earned the nickname “Rock Crusher” because its straight-cut gears made a distinctive noise while driving. FTI Offers a wide variety and ratio of Drag Racing and Mud Racing Powerglide Transmission gear sets for standard length powerglides and shorty glides. Choose from many gear options with a variety of tooth counts. 50 or even 3. If you are into formulas, you can calculate the correct gear as follows: - Count the teeth on the speedo drive gear, the one mounted on the transmission output shaft - Determine your. 80 ratio, Short, 4340 Material Powerglide Planetary. Shovelhead riders may be interested in upgrading to Jims Powerglide tappet blocks. This 6 speed automatic in the Tacoma is no fun at all. Continue with: / Contact. Advance Adapter The Powerglide to Jeep Dana 300 transfer case adapter is 3. 12 by your Jeeps tire diameter (Example:. Standard shorty kit comes in 1. Best sixty foot to date was a 1. I want to put in in an open wheel modified racecar. 11 gear ratio, high performance fuel pump, and a 1970's style TH350 transmission. anyways, i was wondering, with a 383 stroker engine, what would be an ideal gear ratio for the rear end matched with an m-22? i would like to be able to use alot of the torque that the engine provides. The standard rear axle ratio for a 1961 Impala with either the base 2-bbl carb 170 horsepower 283 or the optional 4-bbl carb 230 horsepower 283 and a Powerglide auto transmission was 3. The ratio of 2nd gear in this example would be. 91 in my 63 for a number of years. Performance. 82 ratio and was used by Holden in Australia behind their Australian built 6-cylinder and V8 engines. Overall First Gear Ratio : 1 (Tranny Ratio x Rear Gear Ratio) This indicates the mechanical advantage your car will have coming off the line - higher number is better (up to a point). I have found a calculator that works out RPM, tire diameter and gear ratio in feet per minute to help work out a possible change in rear gears #'s. Makes a great gift too!. That being said, limited gear sets are offered for the carriers, especially if you plan to change gear ratios. 08 rear end (or even numericly lower) for a lower cruising speed. Its saying it needs a 4. When gear ratios are arranged in such an order they form a geometrical series which offers certain advantages from the standpoint of operation. If you are looking for help with restoring or hot rodding your chevy classic a good place to go for help is Chevy Talk my favorite forum is 1955-1957 ( Modified / pro street / show) forum. At last glance there are nearly 40 ratios available in standard 9" size, with many of the more popular ratios offered with a 9-1/2" ring gear, which can be accommodated in a 9" housing. Each gear ratio dictates how many engine speed (RPMS) to how many rotations of the final gear to finally how many rotations of the wheels of the car. Note: All 1965-67 Corvette rear axles were manufactured at Warren and are suffixed "W". Glad I could be of assistance. Most of the V8/Powerglide transmissions came with the 1. The car currently goes thruogh the traps @ 6450 1/8 mile with 32x14 tires. 283, 327, mild 350 CI motors and lightweight combinations usually fair very well with these ratios. I want my old El Camino back with the 283 V8 and Powerglide AT transmission. Correct purple color and 17 tooth design. Basically, the ratio is determined by the number of teeth on each gear wheel. The low range reaction gear is thereby locked to the input shaft and direct drive is obtained as previously described in paragraph 4-21. 00 as this is the typical 4th gear ratio of most 4 sp and 5 sp manual transmissions. Cont Torque Tc (Nm) Feedback: Frame Size: Gear Teeth: IP Rating: Ratios: Servo Wheel Series : brushless dc motor with planetary gears. Lots of money went into research to develop this kit. I have used that a fair bit to help guys work out gear, wheel and tyre combinations for race use. Just as different stall speeds are recommended for different engine torque ratings, items such as rear differential ratio, body weight, tire size and compound used, type of racing you are participating in (or if you are just looking for better street performance or better low-end torque for towing situations) and transmission shift ratios all. Revolution / Revolution or Speed Ratio Multiplier of the Driver to the Follower. Use the Final Drive Ratios found in the 2-wheel drive section for ratio information. Figure 1 demonstrates the various elements of this planetary. If you are going to use this van to tow your car with why not just go with lower rear end gears? I would think that between 3. The third gear ratio was 1. 80 ratio, Short, 4340 Material Powerglide Planetary. 00 as this is the typical 4th gear ratio of most 4 sp and 5 sp manual transmissions. The PCM also monitors the turbine and output speed sensors to calculate gear ratio and the Transmission Range Sensor for gear selection. of torque, you have a Powerglide transmission with a 1. The staff has been amazing to work with and takes care of their customers better than any other company I have ever dealt with. Co-authored with Rick Nelson of Musclecar Restoration & Design. PowerGlide Magazine, Shell, Gear Ratio Calculator, Bowhunting. Super Max 3 Speed Gear Ratios. TCI Circlematic Powerglide Transmission, 1. Powerglide transmission with a 1. The small sun gear has 30 teeth and the large one has 36. What Gear Ratio is My Rearend? You can find your gear ratio easily with this method. Table below: Shows table of all possible chainring/sprocket combinations with gear ratio. Powerglide transmissions operate one gear at a time or have a one-to-one gear ratio. This is common in the factory stock and sport compact classes. this means that dimension "C" is usually longer than dimension "B". 08 is a little too high to run with the powerglide, considering that the powerglide has an extremely high "low" gear ratio (1. (Mine is the stronger 1. Engine RPM at Cruise Speed Example: If you want to Cruise at 60 MPH at 2000 RPM and your Tire Diameteris 30", the Gear Ratioyou need is a 3. Solve for your Tire Diameter. Melbourne cnr Elizabeth and Collins Streets facing south towards Flinders Street Station circa 1969. 3 and that is hard to find unless you do as Jim suggested and hunt down a donor rear for the gears or buy new gears with the ratio you need. If you're curious how changing ratios will affect your gearing, this tool will remove the guesswork. What Gear Ratio is My Rearend? You can find your gear ratio easily with this method. Scroll through the list of popular transmissions to find yours. Planetary transmissions rely on a central sun gear to provide a 1:1 direct drive ratio once shifted from the launch ratio. The exception to gear stretch in this case, is never to stretch your last gear more than halfway to the left, as it will cause extreme gear lag and drop you into low RPMs. If you are going to use this van to tow your car with why not just go with lower rear end gears? I would think that between 3. The starting-line ratio is a combination of the first-gear transmission ratio multiplied by the rear-end gear ratio. Calculate 1/8 mile ET,MPH and Ideal Gear Ratio using HP - by Wallace Racing Home of Pontiac Powered Firebirds,Trans Ams,Pontiac Powered Dragsters,Pontiac Power Rules!. 52 first gear = 6. The sport compact class will also change from 15-inch rims to 14-inch rims depending on the gear ratio and the rev limiter in the car. com Calculate the theoretical speed for a car in each of its gear ratios. Use our gear ratio calculator to find the effective gear ratio your vehicle will have with a new tire size. Can anyone tell me how I can find out? Messages In This Thread. Click here for more information!. This will help you pick the right size tires, transmission and gear ratio combination for your classic. Chevrolet Transmission Dimensions Dimension "C" is the distance from the bellhousing to the center of the transmission mounting pad. Year 1964 up Exploded View # 46A‚ 47‚ 49A‚ 50ASelect OEM planetary gear set. 7" od aluminum drums, xtra-lite maximum duty aluminum planetary carriers, super spr New Be the first to review this product. This calc can be used to find any (one) missing value. 70 rear end which would take me to 8. For any questions or observations regarding this tutorial please use the comment form below. Typically, 10-bolt differentials are specific to a series of gears. 08 is a little too high to run with the powerglide, considering that the powerglide has an extremely high "low" gear ratio (1. If you have problems with larger/smaller diameter tires, use a gear calculator, ( The MGB Experience: Tire/Gear Calculator) then use that as your final drive ratio to get the right gears. Chevelle Data and ID Guide 1964-1972 available at many online locations including my ChevelleCD. Includes short 18" planet carrier, ring gear and sun gear. Powerglide Planetary Gear Sets by FTI Performance. The 242 premiered in the XJ Cherokee / Wagoneer and MJ Commache as the SelecTrac option. net website for personalized autographed copy. Running a 8. The driven gear is positioned in a removable housing that is typically located in the transmission's tailhousing. It seems to me that the 3. 76 low gear, the company's custom E9310 gearset (part number HP7469L, which includes a forged carrier housing and ring gear, 9310 pins and new washers and needle bearings) and one with 4140 gears (part number HP7479L, which includes an OEM carrier housing built with new washers and needle bearings). These models were advertised as “sweet, smooth and sassy!”. I have a 85 camaro 2500# 434- 665 HP powerglide 1. Differential Gear Ratio Calculator; Engine RPM Calculator; Ring Gear — Pinion Gear Ratio Calculator ; Speed Potential Calculator for Ring Gear and Pinion Changes; MPH — KM/H or KM/H — MPH Converter; Tech Info. 20 Ratio) The higher the ratio number, the more power you will have and the less speed you will have. 1958-1970 Chevy Rear Differential code Identification Using the charts below, you will be able to learn alot about the rear differential in your classic full size Chevy. If I were to change it to a h. Solve for your Tire Diameter. 92's) You multiply first gear of either the 2004r or 700r4 first gear by the actual rear end gear ratio, then Divide by the TH350's first gear (2. Engine RPM at Cruise Speed Example: If you want to Cruise at 60 MPH at 2000 RPM and your Tire Diameteris 30", the Gear Ratioyou need is a 3. Super Max 3 Speed Gear Ratios. Buschur Racing's Powerglide Adapter. However, the rise of modern six-, seven-, and eight-speed automatics has more. Aluminum radiator. CAMARO SPEEDO DRIVE GEARS Speedometer Drive Gear for Turbo 400 Transmission - Light Green , 45 Teeth PART NUMBER: TRA-160 Our Price: $15. Melbourne cnr Elizabeth and Collins Streets facing south towards Flinders Street Station circa 1969. The number of turns of the wheel is the gear ratio. However, the gearing may be too high to put all the power of a race engine on the ground. Calculate Clear. See the chart below the table for typical ratios. rocker arm ratio: MAX RPM: 4500 5000 5500 6000 6500 7000 7500 8000 >8000 CARB CFM: 600 650 700 750 800 850 950 1050 1150 >1150 Dual 4150s Dual 4500s Fuel Injection. x and MS Internet Explorer 3. They are roomy, with tastefully restrained, period use tail fins and chrome. 76 ratio gear-set. For this example, let’s use an AOD. Early Powerglide / 3 speed standard Speedometer Driven Gears. 82 Standard material$395. Buschur Racing's Powerglide Adapter. For the Tire field, enter your tire diameter in inches. right now, i couldnt ask for a better combo on the motor but when i spray it, im all in the shift light(7000) rpm before i have time to shift. 99:1 Is the 3. But, driven by power levels, gear ratios, and race distance to some extent, the Turbo 400 has found new legs as a two-speed, just like its GM cousin, the Powerglide. Rev/Mile: Rev/Mile is engine revolutions per mile, which is rpm at 60 mph. Lenco Transmission Overview. See the chart below the table for typical ratios. Final Transmission Ratio 3. The 1962-63 serial numbers are located on the front, right side of the differential carrier. GM Muscle Car / Street Rod / Restoration 2-Speed / 3-Speed Automatic At about 2600 dollars (depending on model) the GEAR VENDORS is not the cheapest way for you to get overdrive but is by far the best. Has a 406 small block edelbrock performer aluminum heads stock out of box,12. This is a superior alternative for most cars thinking of going to a Th400. The gear ratio is perhaps one of the most overlooked aspects of modifying a car. Part Number: TRA-150. You're going to have to put the car in nuetral or out of gear, so safety first! Do this on level ground, and be sure and chock the front wheels so the car can't move. This transmission was very popular and considered one of the best of ever produced. Requires an HTML 5-compliant browser. - Finial gear ratio - Internal gear ratio - Dynamic gear ratio chart - Easy screen capture for share gear ratio chart - Car gear ratio data base Calculation moving distance you can accurately set the gear ratio for different types vehicle(egTouring, M-Chassis, F-1, 1:12). Also with muscle cars that have very large power bands. 00 Formula to calculate Gear Ratio based. But the Powerglide was typicly used with around a 3. For more than a. New Process / New Venture Gear 242 Transfer Case. You can change tire dimensions to calculate the effect on top speed and gearing. Example: 2. See ratios below and updated link to the 2nd gear calculator with the auto ratios plugged in. BMX Ultra has created a really great rollout calculator that tells you exactly what the distance is covered by 1 full crank rotation based on your tire size and gears. The standard rear axle ratio for a 1961 Impala with either the base 2-bbl carb 170 horsepower 283 or the optional 4-bbl carb 230 horsepower 283 and a Powerglide auto transmission was 3. In this example, 1st gear ratio would be 2. One custom RWD alternative was developed by Bushur Racing in the late '90s. This is a much lower ratio than what was common, and provides good acceleration from a stop and is also good for off-road driving. For example, the default figures in the chart are for a stock ratio transmission as fitted to a Type 1, 1303S (3. The average car on the street has a rear end gear ratio of about 3. Gear Ratio Calculator › The Powerglide to the GM NP 208 / 241 transfer case adapter is 2. This calculator assumes you know the vehicle's transmission ratio. The speedometer accuracy is maintained by selecting the correct size driven gear fitted to the gearbox end of the speedo cable - each gearbox has a number of different sized (and colour coded) gear combinations available to suit nearly any combination wheel and differential variations. Powerglide Steel 1:80 Ratio Straight Cut Planetary Gear Set Product #2540S - Planetary gear set with all pinion gears, center gear, auxiliary gears and flange gear are housed in a steel carrier. It uses an adapter plate to bolt an automatic Powerglide transmission to a narrowblock. What Gear Ratio is My Rearend? You can find your gear ratio easily with this method. Gear Ratio Calculator. I know that there is a lot of questions on rear end gears so heres another one. 82 first in 6 cylinder cars. In its stock form, it stood up to the power of the Buick Grand National. Produced in low volume from 1968 to 1971, the M22 earned the nickname “Rock Crusher” because its straight-cut gears made a distinctive noise while driving. One of the planetary gearsets from our transmission has a ring gear with 72 teeth and a sun gear with 30 teeth. Buschur Racing's Powerglide Adapter. Moving your mouse over the ratio will show speed you will achieve by pedaling at 100 rpm. 80 ratio, Long, 4340 Material Powerglide Planetary F2540S: 1. Different-ratio first-gear sets are now available (through TCI Automotive, JW Performance Transmissions, and others) for the Powerglide transmission. Transmission Gear Ratio Equation and Calculator Mechanics and Machines Calculations Menu The following equations and calculators will estimate the resultant vehicle speed at a known engine rpm for a manual transmission with up to six forward gears. 86 first gear ratio, and you have a 4. Everything including the beautiful Tropical Turquoise paint, the clean, powered, white convertible top and tri-tone blue, white and black interior, and the Rad. The Pinion gearbox calculator helps you to choose the ideal gearbox tuning. The 1964 serial numbers are found on the bottom of the carrier. Contrary to popular belief, the GM 200-4R can be one tough transmission. All combinations feature a 1:1 high range gear ratio for high speed or daily driving. 943 at full weight. starting line ratio 1st gear x rear gear? wouldn't this be the same for the 1/8 as it is for the 1/4. Welcome to rushgears. Continue with: / Contact. The defaults show suggested values. The 4L80E has an overdrive gear with a ratio of 0. Calculator Gear Ratio Calculator These TCI Powerglide replacement gears are 1. Powerglide Planetary Gear Sets by FTI Performance. A gearbox is a mechanical device utilized to increase the output torque or change the speed (RPM) of a motor. We provide how-to and technical articles, vehicle and build features and examples, plus calculators and lookups that will help you get your ride from dream to driver. The number of teeth of the planets has no effect on the ratio. These gearings are arranged in sets. Also had a lot of fun with a 1977 Toyota Hi Lux with a 4 speed manual. 92's) You multiply first gear of either the 2004r or 700r4 first gear by the actual rear end gear ratio, then Divide by the TH350's first gear (2. Powerglide Steel 1:80 Ratio Straight Cut Planetary Gear Set Product #2540S - Planetary gear set with all pinion gears, center gear, auxiliary gears and flange gear are housed in a steel carrier. The lower the ratio number, the more speed you have and less power. Hughes offers 4 versions of this kit, one with 1. How to Calculate Gear Ratio. ratios they contain. Solve for your RPM. Solve for your Crawl Ratio. Skid Patches. 69:1 gear ratio that's ideal for today's big-cubic-inch motors. Drag Performance Calculator By AssassinRacing. 449 114 114 1000-5000 smooth 969 b comment: good mileage and torque mc2731 hyd 2 204 214 280 290. This page is all about what I learned after I decided to swap the original TH400 transmission in my 1975 GMC Suburban for a TH700R4 transmission to gain the benefits of a modern overdrive transmission and help tame my "great for towing" 4. 11 rear would give you 10. Due to the lack of suitable cores‚ supplies may be limited. What is the optimum gear ratio for your application? To help you determine this Mark Williams Enterprises offers a handy plastic gear ratio calculator. By multiplying these three ratios you come up with a 2. Planetary Epicyclic Gear Ratios Equations and Calculators. Crawl Ratio Calculation Basics. Small gear with shaft - plastic black 23T 3860346 03-121 Small gear with shaft - plastic yellow 24T 3860347 03-122 Large gear with shaft - plastic green 34T 9774413 03-124 Small gear with shaft - plastic orange 25T 3860348 03-125 Large gear with shaft - plastic orange 35T 9780387 03-128 Large gear with shaft - plastic natural 36T 1359270 03-132. So, to determine the ratio of 1st gear, you’d multiply the ratios of each individual case section. 1959 C1 Corvette Ultimate Guide. Comes in 20, 21, 22, 24 and 25 tooth. Mark Williams Enterprises is an industry leading manufacturer of drag race axles, drive shafts, brakes, modular rears, rear end housings, thirdmembers, and chassis components. 52 and multiplying that by the 4. If your car originally was equipped with the Turboglide auto trans the standard rear axle ratio was 3. A 3:73 is a good gear IF you have a powerglide, or a manual with a poor 1st gear. See the chart below the table for typical ratios. I race on a 3/8th mile track, have a stock 350 with a. Chevelle Restoration and Authenticity Guide 1970-1972 is available at many online locations including my ChevelleCD. I'm changing the gear ratio from 3:08's to 3:73's and would like to change the speedo gear to reflect the correct mph. The Powerglide planetary is referred to as a compound gear set with a ring gear. The gear ratio is perhaps one of the most overlooked aspects of modifying a car. One notable exception was the export version of the transmission, which offered only the 1. 17 rear gear ratio, disc brakes & 4 link suspension. 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. The overall demultiplication of multi stage planetary gear units is calculated by multiplying the ratios of the single stages. For any questions or observations regarding this tutorial please use the comment form below. These gearings are arranged in sets. Photo by HRAmbo. They are roomy, with tastefully restrained, period use tail fins and chrome. Use this gear ratio calculator to select the best ring & pinion and gear ratio combinations to serve your needs. 76 in 1st gear, 1. One of the easiest approach you can take is to learn how to solve planetary gear configurations using similar triangles of levers aka lever diagram analogy. Min ratio: Ratio of the lowest gear of your setup. i need my car to pull stronger on the bottle. To determine gear ratio of a gear train with 2 gears, start by identifying your gears. The number of turns of the wheel is the gear ratio. Here is a quick tire size vs gear ratio /speed calculator that is easy to use. ), full performance and economy data, or to compare up to 5 cars side-by-side - click one of the the buttons below:. The tool to use is a scanner that can identify the type of system, amount of converter slip and calculated gear ratio. I was thinking more of 700 to 1000. If you would like to find a value other than speed, fill in information for all the boxes and clear the value in box you would like an answer for. What others are saying Don Cook saved to New Tire Size / Gear Ratio combinations affect fuel economy and performance This page is a Differential Gear Ratio Chart for comparing tire size to axle gear ratio and the combined effect on power and fuel economy. Many racers will use a taller tire to take advantage of the gear ratio they have in the rear end. Use the Final Drive Ratios found in the 2-wheel drive section for ratio information. Click here to calculate your rollout. So you had 3. (Mine is the stronger 1. This chart has been revised with actual ratios. Each gear ratio dictates how many engine speed (RPMS) to how many rotations of the final gear to finally how many rotations of the wheels of the car. How to Calculate Gear Ratio. This calculator assumes you know the vehicle's transmission ratio. Engine RPM at Cruise Speed Example: If you want to Cruise at 60 MPH at 2000 RPM and your Tire Diameteris 30”, the Gear Ratioyou need is a 3. Check the theoretical vehicle speeds, RPM drops per gear and mile per hour pulls. If you have problems with larger/smaller diameter tires, use a gear calculator, ( The MGB Experience: Tire/Gear Calculator) then use that as your final drive ratio to get the right gears. For example, let's say your car has 600 ft. A slight deviation from the series is made at high speed end. If a car has less than 6 speeds, only enter numbers for the ratios that apply (i. The basic purpose of installing a modified torque converter is to allow the engine (RPM) to increase to where the engine is making greater power before driving the wheels, thus allowing the vehicle to accelerate from a standing start much. 125” in length. It’s running a 383 engine with 10. 11 rear would give you 10. Using the correct auto ratios with 3. 35/1 and retails for about $45 from your friendly GM dealer. Transmission yoke / Powerglide / 27 spline / 1350 series / Strange chrome moly. Mark Williams Enterprises is an industry leading manufacturer of drag race axles, drive shafts, brakes, modular rears, rear end housings, thirdmembers, and chassis components.