3+ is green, 2-3, blue, and below 2, red. It came from the factory with a 4.56 gear ratio. 3.36:1 ~ 3 or 4-speed. 7.5 inch, 8.5 inch, 10.5 inch. This is a major advantage compared to other rear axle systems because disassembly is faster and more convenient. Give us a call at 800-216-1632 to get started. Rear Axle Differential Ratio Comparisons for Gas MPG | It ... Using the charts below, you will be able to learn alot about the rear differential in your classic full size Chevy. For example, if the axle ratios were listed as 3.31:1 and 3.42:1 and 3.55:1 and 4.10:1, the lowest ratio of the four gears is 4.10:1. The overall First gear ratio with the TH400 and 4.10:1 rear gear would be 2.48 x 4.10 = 10.168:1. 3.55 times that the driveshaft turns, the rear axle turns one time and you will have a torque advantage of 3.55x. G2 Axle & Gear | Home A higher number denotes a lower ratio. It is based on the above formula. Same with 2nd-over compared to 3rd. Power is transmitted from the transmission to rear end 1:1 in high gear. Jeep Wrangler JK Gear Ratios. Take a look at the formula to calculate the axle gear ratio! This chart provides values that represent a 1:1 ratio on a manual transmission. Also found this a while back which has gear ratios in it. Differential Man Gear Ratio Chart _____ M.P.H. was gonna be pissed if it had 2.94 ratio. Gear Ratio Chart - JeepHut Offroad Calculators - Richmond Gear Rearend/Axle Length Calculator. Just found this and thought I would share, this makes it very clear to know what rear gear ratio you have Ref: Used XTERRA Rear Axle - Buy used XTERRA Rear End Year: 2014 Nissan XTERRA Rear Axle 4x4 AT X (3.13 ratio) 4x4 MT PRO-4X (3.69 ratio) 4x4 AT S (3.13 ratio) 4x2 (AT, 3.13 ratio) 4x4 AT. RZN171L-CRPDKAB with factory 31s/265s should be 4.56 with the AT. Rear end 2.866 (ND, may not fit older cars) 3.23 (V8 rear only) 3.308 3.42 (V8 rear only) 3.73 (Europe NC rear) 3.636 3.909 4.10 4.30 4.44 4.78 Stock rear end ratios for North America 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. On some tags, the first 2 digits don't appear on the tag, but they must be used to identify the axle. Pick the tire hiegth, pick your gear ratio. When we are talking about these ratios in numbers, we commonly will say 3.92:1 or simply just 3.92. Back to Calculators Index. Here sits an XJ with 35-inch tires. I would like to change my rear differential to a bigger one and stronger drive shafts. According to that chart FCA isn't gearing them "incorrectly" for the 3.6L engine. One way to compensate for this is to swap out your differential gears. West Coast Differentials stocks a huge inventory of OEM and Aftermarket Ring & Pinion Gear sets and orders placed before 4 PM Pacific Standard time usually ship the SAME DAY! Divide that number by 60. FORD FINAL DRIVE RATIOS Find your transmission and rear gear multiplier below. For example, a 3.73 gear ratio requires 3.73 driveshaft rotations to turn your tires once around. RPM vs. Gear Ratio and Tire Height. but could the sticker on the rear axle be wrong? If your TJ is not a Rubicon you will have a NV231 t-case and 2.71:1 crawl ratio. This Final Drive number is also your torque multiplier when in that gear. Next find the new tire size on the left of the chart and look across to find the . With an overdrive transmission your RPM in overdrive will be 15% to 30% less than indicated. Scroll through the list of popular transmissions to find yours. 2000 - 2002 Front Axle Model Designation changes. For the Tire field, enter your tire diameter in inches. IOGEAR USB 2.0 Print Server, 1-Port. 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. New Ratio: Lo Ratio: TIRE SIZE CHANGE CALCULATOR. Do you know if there is any available differential with correct gear ratio that would be a suitable choice? In fifth gear at 2,200 rpm you're already going 76 mph. This has a very big effect when you are wheeling in 4-low! Common axle ratios that came from the factory on Dodge Ram trucks are 3.21, 3.55, 3.92, and 4.10. Colors group similar values. To sum it all up it can be handy to use this table for both your front and rear axle gear ratio selection. They include the calculations for all gear sets and pinion ratios. So for every 10 turns of the (rear) wheels, your drive . Figure 1. These codes are arranged in alphanumeric order. To pick the right rear gears you must know the peak torque RPM of your engine, the ideal cruising RPM, and the speed . How to use the chart. Multiply that number by any speed, 50, 60, 75 etc. Todays date is 11/26/2021 Calculate your Rear End Gear Ratio Needed. On the other side of the same equation you . For Example: 235/45ZR-1 (235 x 0.45 x 2 ÷ 25.4) + 17 = 25.327". Axle ratio or rear end gear ratio is calculated by dividing the number of teeth on the ring gear by the number of teeth on the pinion gear. This gear is commonly called as axle used solid configuration that changes from pinion teeth into center. So for every 10 turns of the (rear) wheels, your drive . That way you don't have to take apart a differential and manually count the teeth on . +61 2 9607 2299. Winters Performance offers an extremely durable gear chart for 10 spline quick change, 6 spline quick change, 7" quick change and xtremeliner quick change gears to help you determine the correct final drive ratio for your car at the track or in the shop. And here's a formula that you can use to calculate your vehicle's rear axle gear ratio: RING GEAR TOOTH COUNT ÷ . The rear axle differential assembly in my 1964 Chevy C60 was actually a replacement unit. Rear gears can also affect things like gas mileage, automatic transmission shift points, RPM when cruising down the highway and what gear you're in when crossing the 1/4 mile traps at the dragstrip. This code will tell you the ratio, whether it is posi or not, any special notes and what plant it was made at. Then, change Richmond's performance gear ratios and beat your best time! Mustang Rear End Gear Ratios. Tire: Size: 3,31: 3,42: 3,55: 3,73: 3,91: 4,11: 4,27: Part of the reason we recommend 4.56:1 gears for the 33-inch tires is because they also work well with 35-inch tires. LG. Linksys PSUS4 PrintServer for USB with 4 Port Switch. This chart shows you the cruise rpm at 60 miles per hour based on gear ratio and tire height. [ (Axle Ratio x Vehicle Speed x Transmission Ratio x . The left side of the calculator requires all three entries. We have a large selection of gear sets in stock and can recommend the correct . Mark the wheel and the drive shaft with chalk or masking tape. Ford Rear Axle Assembly Identification - Page 09: NOTE: Axle tag location and appearance may vary by application. This chart applies to all Ford non-overdirve transmissions, manual and automatic. Calculate RPM for Given Speed(MPH), Rear Gear Ratio, and Trans Gear Ratio. For example, a transmission with more gears might allow a truckmaker to offer a taller rear axle ratio (a 3.55 instead of 3.73) and still provide improved towing and hauling capabilities. DANA 41 The 41, which has a ring gear size similar to the Dana 44, came in early CJ-2As. Power is transmitted from the transmission to rear end 1:1 in high gear. With our RPM calculator, you can calculate your engine's RPM based off of your vehicle's speed, tire diameter, rear gear ratio, and transmission gear ratio.Keep in mind that our calculator does NOT take into account drive train loss, road and weather conditions, or the skill of the driver. Please refer to the Gear Ratio Calculator to determine your rear end axle . This includes the Center Case, the Pinion gear, the ring gear, and the differential or spool. For example, If your vehicle is equipped with 3.55 gear, the ratio is 3.55 to 1. 23 Mount Erin Rd, Blair Athol NSW 2560, Australia. . Understanding Ford 9 inch gear ratios. You can get away with a lower gear ratio and still crawl slower than your friends with 2.71:1. This calculator will help your hot rod or street machine get to the next level without red-lining your engine. Calculate Rear End Gear Ratio needed. Calculate Rear End Gear Ratio Needed. Writing Excel Macros with VBA. This axle, with a 7.56-inch ring gear, is the fronted for 4.0-liter Ford Rangers and Explorers/Mazda Navajos. The chart below will help you to select the optimum gear ratio to bring the power and torque back to where you want them. DRAG PERFORMANCE CALCULATOR. A good gear ratio for the AW4 automatic running 35-inch tires is 4.56:1 or 4.88:1 gear. Tall (high) gears have LOWER numerical numbers such as 2.79, 2.90, 3.00, 3.25. A vehicle's rear axle ratio is numerically expressed. 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. The Final Drive Ratio shows you how many times the engine turns for one complete turn of the tires. This chart is based on 65 MPH and a gear ratio of 1:1, on a manual transmission in 4th gear. Remember that the 1st gear is improved on both new transmissions, so responsiveness and feel would be improved of the line and getting tires moving, but the system load at 1:1 @ speed (65 or 70 depending on which version) that the charts focus on wouldn't really change, other than the stock 3.21 & 3.73 options have been replace with the single 3.45 axle, but comparing like for like ratios . I'm having a W211 E500 4-matic from 2004 with 722.672 gearbox and 3.07 diff (same ratio in front and rear differential). Comments. LA. If the gear ratio and tire size you want to use isn't on the chart, use the . Our Differential Gear Ratio Calculator can help you select the correct gear ratio to maximize the performance of your vehicle. The center section is the differential assembly. GEAR VENDORS reputation for being the best is because of its … Continue reading Ford Drive Ratios → If it turned 4 and a quarter times, it's a 4.25:1 ratio. What we mean by this is that for every 3.92 turns of the drive shaft, or pinion gear, the wheels will turn one time. Enter your 1/4 mile race car's information into our calculator to see how well you will perform. Vehicle Weight (in pounds) Vehicle Horsepower: RPM through lights (finish line) Tire Diameter (Hght.) Differential gear ratios; there is a lot of confusion in the trucking industry about what is the best gear ratio for pulling power, fuel mileage, and a good cruising speed. The chart shown below shows RPM calculations at 55 MPHfor various combinations of final Gear Ratioand Tire Diameter. 10-Spline gears fit Super Max and standard Quick Changes. Then, change Richmond's performance gear ratios and beat your best time! You can use it to quickly estimate your trucks best gear ratio. First thing to understand in Ford 9 inch gear ratios chart is related to gear ratio. The driveshaft then runs to the differential pinion gear. Gear Ratio Calculator. The addition of larger tires can greatly decrease performance and fuel economy. The proper rear-end gear ratio can be selected using the following simple formulas whether using a direct-drive (1to1) or overdrive (usually 30%) transmission. HP Wireless Printing Upgrade Kit. Jump on Board. Gear Ratio and Tire Size Chart. The gear ratio codes are located on the front passenger side of the differential as shown in the illustration below. The aftermarket has responded to this by offering a plethora of ratios ranging from 2.91 to 6.50:1. Bigger tires are more functional, look better, and rob you of power. This calc can be used to find a new gear ratio. Our experts will help you find the correct ring and pinion set for your particular application. This calculation is used to match oversize tires with new ring and pinion gears to obtain the desired engine RPM at highway speed. on the door plate; so far this turns out to be a 3.91 gear ratio, at least for the 5sp. A differential unit having 37 ring gear teeth and 9 pinion gear teeth will have an axle gear ratio of 4.11: 1. FORD FINAL DRIVE RATIOS Find your transmission and rear gear multiplier below. Products include ring and pinion sets, installation kits and axle shafts for GM, Ford, Chrysler, Jeep, and Toyota vehicles. Access Drag Performance Calculator. ak4marsx said: There is a separate set. Maximum gear reduction in lowest transmission gear (axle ratio x transmission ratio) 4-speed Chevrolet: 45.18: 61.56 : 45.18: 61.56: 5 . . Listed are the expected RPM's at 60 MPH with a given rear end ratio and tire height. Please NOTE: If you have an automatic transmission your RPM will higher due to slippage in the transmission and the torque converter. One of the primary reasons why the 9" Ford rear end has come to dominate drag racing is the ease with which thirdmembers with various ring & pinion gear ratios can be installed. One of the primary reasons why the 9" Ford rear end has come to dominate drag racing is the ease with which thirdmembers with various ring & pinion gear ratios can be installed. D-Link DP-300U 10/100TX 1-USB Port 2-Parallel Port Print Server. This gear was introduced in early 1950s . it has 3.357 gear ratio. Save yourself the headache and let us figure out your ring-and-pinion gear ratio! Changing the rear gear ratio to 3.73:1 or 4.10:1 would be much better. H-Body Rear Axle Chart All information and graphics on this site is copyright Bob Gumm's "Building the V8 H-Body", 1999. The Axle Ratio is stamped on a Gear Ratio Tag on the axle cover. Calculators to help you out. Calculators. +1 (310) 361-0020. Right down that RPM number. The following chart of Tire sizes and axle gear ratios are meant to give a general idea of the relationship between the differential gear ratio and the tire size and what effect the ratio has on power output and fuel economy. A 4x4 Differential Gear Ratio Chart Table. Click to expand. That being said why 3.21 is even an option for a new Jeep is beyond me. This is the same concept for the front and rear differentials. This calculator will provide the speed of the vehicle based on transmission gear ratio, engine RPM, tire height, and the ring gear and pinion gear ratio in the rear end axle differential housing. 7.625 Ring Gear / 28 Spline Axles 1988+ Rear Axle Codes (RPO - Found on tag in glove box) GU2= 2:73 ratio GU4= 3:08 ratio GU5= 3:23 ratio GU6= 3:42 ratio GT4= 3:73 ratio GT5= 4:10 ratio GQ1= Open Differential Rear Axle G80= Positraction/Locking Rear Axle (usually is next to the ratio code on tag) GEAR RATIO CALCULATOR. Prefix. in Inches : 1/4 Mile ET: 1/4 Mile Top End Speed: Ideal 1/4 Mile Gear Ratio: For example, If your vehicle is equipped with 3.55 gear, the ratio is 3.55 to 1. A vehicle's axle ratio is the number of revolutions its driveshaft must make to produce one rotation of the axle. This Final Drive number is also your torque multiplier when in that gear. Rear End Gear Calculator. 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. The right side will show the results. Use our gear ratio calculator to find the effective gear ratio your vehicle will have with a new tire size. This article will pertain to the over the road semi truck, NOT heavy haul, or vocational local trucking. just checked my door and it has cc29! so i crawled under the truck to check the rear axle sticker. Using the calculator, we inputted a much lower rear gear, one that matches up better with the higher rpm capabilities of modern engines like GM LS and LT V8s, the Ford Modular and Coyote V8s, and Gen III/IV Hemi engines. Whether or not you even plan on . Owning a Jeep can quickly become a lifestyle that can mean much more than just driving. Calculators to help you out. Use our simple Gear Ratio Calculator to quickly find the correct gear ratio for your ring and pinion gear set. Differential Gear Ratio Calculator. The BOM will identify the model number, the gear ratio, the type of differential, and all component parts. Close ratio gearing lets us work both the torque and rpm side of this equation for big gains in HP and performance. Knowing the enemy is the first step in deciding what gear ratio you should swap to. This is revolutionary technology because the car can accelerate faster. This chart is based on a drivetrain running at a 1:1 gear ratio at 65 MPH using a manual transmission, meaning the transmission and transfer case are passing power through from the engine at a 1:1 ratio without any overdrive or reduction before it reaches the differential. Access Drag Performance Calculator. Enter the RPM, Tire Height in inches, The Rearend Gear Ratio, The Transmission Top Gear Ratio, and The MPH, Then Press 'Enter' Key Conv Slip% = [((RPM * Tire Height) / (Rearend Ratio * Trans Ratio * MPH * 336)) -1] * 100 RPM Tire Height Rearend Ratio Trans Ratio MPH Meaning that for every. The first (and I'm assuming original) rear axle differential assembly was in the dump bed when I purchased the truck. Fixie Notice for instance that 1st-over has a lot more torque multiplication than 2nd - now look how low you would have to go in rear end ratio to make your second gear have as much torque as 1st-over. However, in saying and writing, :1 is neglected since the gear ratio is always measured to 1. Most differentials nowadays will have a sticker on the outside with axle ratio information. Gear ratios dictate how quickly your car will accelerate from a mechanical standpoint. Select the correct gear chart 10-Spline Gears or 6-Spline Gears; Find ring and pinion ratio; Find desired final drive; Read across to gear set number The 1965-79 numbers are usually found on the . Use Part No: CG# (see chart below) HOW TO USE THE FOLLOWING GEAR CHARTS. Find all of the gear ratios available for your vehicle in our Application Guides or call our staff of differential experts at (800) 510-0950 for LIVE help. Calculators. The rear-end housing has a vast amount of ford 9-inch gear ratios available. Chrysler Dodge differential gasket patterns can help you indentiy what rear end you have. Code Application Ring Gear And Pinion NL or L Axle Shaft Splines Additional Information; Ratio: Diameter of RG: WGA-A: Lincoln Mark Series '69-'71 Thunderbird '69-70: 2.80: 9 3/8: NL: 31-WGA-B: Lincoln Mark Series '69-'71 Here's a formula you can use to calculate your vehicle's tire diameter: (CROSS SECTION WIDTH x 0.ASPECT RATIO x 2 ÷ 25.4) + WHEEL DIAMETER = OVERALL TIRE DIAMETER. Traditional BOM's are 6 digits followed by 1 or 2 digits and start with the numbers 60 or 61. Ring Gear/Pinion Gear Teeth to Gear Ratio. The chart below may be of some help in deciding what rear end ratio is right for you. The casting numbers/letters on rear end housings may have either a prefix or suffix of "N" or "NF" and no reason has been found yet why they may have one or the other. Rear Axle Assembly Codes. The lower the gear ratio, the more rpm required to maintain a given speed with . The number of driveshaft rotations will help you determine your rear axle ratio. X Gear Ratio X 336 = RPM _____ Tire . GEAR VENDORS reputation for being the best is because of its … Continue reading Ford Drive Ratios → Gear Calculatoris available on RICHMOND website www.richmondgear.com The following formula has been developed to calculate the optimum final Gear Ratio to suit your application. FIGURING TIRE DIAMETER (Height) FORMULA: Tire Size / 25.4 x Aspect Ratio x 2 + Wheel Diameter = Tire Diameter in Inches (Height) EXAMPLE (285x70R15): 285 / 25.4 = 11.22 x .70 = 7.8540 x . This pinion gear turns the ring gear, which uses another gear reduction process to turn the wheels. 3.08:1 ~ 3 or 4-speed. Axle Ratio. For maximum performance with less converter slip at the lockup point, your converter's stall speed should stall close to these figures. Use this calculator to determine your gear ratio and vehicle's speed in any gear and any engine RPM for best performance. Select the value you want to solve for. Ring-and-pinion selection made easy! Xantrex Technologies 851-0400 XPower Plus 400-Watt Inverter. 1101 W. Rialto Ave. Rialto, CA 92376, USA. and i have big tow, 4x4. Edit by Ed Quinones on 10-7-05: I used to own a 99 Prerunner ext cab 2.7L with auto tranny and gear code of B07A. General Motors rear end differentials are referred to by the diameter of the ring gear, i.e. Turn the wheel TWO revolutions and count the number of driveshaft turns. In other words, having the wrong gear ratio can turn your car into a complete and utter turd, or it can make it lightning quick off the line but no with top-end speed what so ever. Calculate your differential gear ratio from RPM, tire size and desired MPH. charts, and illustrations to give simple step-by-step instructions on disassembly, cleaning, machining tips, pre . Write down that number. Gearing for the strip To find the ideal gear ratio for drag racing use your RPM at peak HP. The spiders are the same as a 44's, but the carrier and gears aren't. It is 10-Bolt Casting # 3839390N. Just type in your info (example: 5000 RPM), press calculate, and you'll get the right ratio without the guesswork. The 1962-63 serial numbers are located on the front, right side of the differential carrier. I hope this chart will help you find what your looking for. Sierra Gear & Axle is a premium line of light-duty differential parts. Enter the required Overall Width, Pinion Offset (location), Brake Space and Drum/Rotor thickness to find axle length and housing width. Meaning that for every. Input your stock and new tires sizes along with your original gear ratio. For example, if it turned 3 and a half times, it's a 3.50:1 ratio. The speed you want to drive at, usually 75mph . The chart is based on RPM levels at 65 mph (105 kph) and a drive train running at a 1:1 gearing ratio, meaning the . If you have a Rubicon you have a NV241 t-case and a 4:1 crawl ratio. Axle Gear Ratio = Check out this example! . The gear ratio of each overdrive gear of your transmission. The aftermarket has responded to this by offering a plethora of ratios ranging from 2.91 to 6.50:1. "Tall" gears and "short" gears are referring to the gear ratios. Back to Top. Sierra Gear & Axle parts are designed and engineered to the highest quality specifications for use in street, off-road and performance environments. If your Jeep has the AX-15 automatic you'll want around a 4.10:1 gear ratio. HP Wireless G Print Server. I keep getting questions from people who want to know what gears thay have and where they can find a posi unit. The 1964 serial numbers are found on the bottom of the carrier. This calculator will help your hot rod or street machine get to the next level without red-lining your engine. But, 10.168 4.70 (to determine the equivalent rear gear ratio) equals 2.16:1, which is not realistic. Save yourself the headache and let us figure out your ring-and-pinion gear ratio!
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