How: A number of factors must be considered when selecting a rearend gear ratio (ring & pinion set). If you do the conversion the diff ratio change is critical or else you wont have no acceleration. 9 diff ratio (very happy with acceleration) but on the weekend i will be converting to manual and im wondering what would be the best diff ratio to roughly match the results[code][/code] Last edited by ringastinga on Wed Sep 22, 2010 7:10 pm, edited 1 time in total. acceleration ratio. 08's through to 4. Probably with a 2500 rpm stall converter it would be better. Ratio n:1 of torque that is applied to the output with most resistance when the input receives reverse torque (coast). Exterior Features; Bodyside/Cab Step or Running Board: N/A; Bumper Step Up: N/A; Front Air Dam: Standard; Metallic Paint: Standard; Power Sliding Side Van Door: N/A; Power Trunk L. 6 g cm-3 is the density of mercury and g = 9. If your into occasional towing in the hills or street/strip racing, then a gears set ratio of 3. ) +(2*(Tire Ratio/100)*(Tire Width (mm)/25. dB table sound pressure levels SPL level test normal voice sound levels sound units decibel level common sounds sound intensity decibel comparison chart noise ratio Conversion of sound pressure to sound intensity calculation compression rarefaction loudness decibel dB scale ratio factor units - Eberhard Sengpiel sengpielaudio. Gearing as high as the highest ratio that is available for the Corvette Dana 44 gear case, 4. The sweet spot is a crawl ratio that gives the best of all worlds: short enough to. You can apply the gear ratio formula to each pair of wheels in the gear system in succession to arrive at a final gear ratio for the system, but you don't need to do that. The web's largest site for Nissan and Infiniti enthusiasts, NICOclub offers accurate Nissan repair and troubleshooting information, friendly forums, Nissan and Infiniti news and events, Nissan parts and accessories, active Nissan classified ads, and a true sense of community. Second gear will have more torque than second gear with a lower rear end numerical ratio, but you will not be able to stay in second as long when the rear end gear ratio is increased. Rather than making the 3-4 shift at 74 mph you can push it up to 82 mph with the same 6000 rpm engine speed. 7 mph per 1,000 rpm in direct 4th gear, and the 3. 07 ratio would really go fast, but acceleration may be sluggish. Uniform acceleration means that the acceleration is constant − independent of time − and thus the velocity changes at a constant rate. Damping, Damping Ratio, and Linearity This section concerns the physical properties of acceleration, vibration, and shock measurements in which accelerometers are commonly used. Can someone explain diff ratios please? but slower acceleration. 55:1 V6 is 8,000 lbs, and a "tow rating" of 3400 lbs assumes the Explorer doesn't weigh more than 4600 lbs. if you go 4. 42's on the street and have a 235/60R14 tire which probably yields closer to a 3. 89:1 gives around 16. 73:1, if you want the most acceleration and don't care about mpg, then 3. What you do: Choose a gear ratio that gives you the traction, acceleration and top speed you want. A low gear ratio (e. The higher the number the faster the engine revs. 0T Premium Plus : Strengths of this model include interior comfort, fuel economy, extreme efficiency, Acceleration, and luxury and technology features. This calculator is designed to give the potential speed values of a vehicle, based on the RPM of the engine, the ring gear and pinion gear ration, the final transmission gear ration (usually 1. On the Ram 1500 lineup, there are three available axle ratios - 3. Cortina Diff ratios. showrooms this spring, the S4 will list for $51,875 in Premium. Ford replaces the F-150's twin-turbo 3. 31 ratios as the new transmissions have lower 1st and 2nd gears than the old 4-, 5- and 6-speeds, helping offset the axle ratio acceleration deficit. To achieve the best acceleration, race car drivers delay upshifting until the engine reaches the "red-line", the spin rate above which it will begin to suffer damage. 11 then thats a 33. 91 ratio diff- BIG acceleration improvment? Thread in ' Technical Questions ' started by Stavros , Jan 16, 2011. During your trip, there may have been times that you were stopped and other times that your speedometer was reading 50 miles per hour. 45 in an Xr8 manual you will have a much quicker acceleration but a lower top speed. 92 gears, no towing package, but i also have the corporate axle, but i cant remember if it is 8. The acceleration torque must be added to the normal torque requirements of the machine. Thermodynamics is filled with equations and formulas. Ratio Test. General consensus suggests the best final drive ratio for a manual E28 535i/528i is 3. The issue is that when driving at highway speeds, or under moderate acceleration, the AFR will jump from 17-25+, and the engine will cut back and start popping in the intake. No Tundra offers 3. It uses a patent pending design to improve grip in low traction conditions. All it says on the Ford sight is that it adds quicker acceleration. This calculator is used to find the approximate maximum speed of your brushless-powered R/C vehicle. When you choose horsepower, this calculator will measure the approximate horsepower of an engine based on the torque of the engine (measured in foot-pounds) multiplied by the RPM of the engine, divided by 5,252 (conversion between foot-pounds and horsepower). 45 axle ratio, plotted with torque and horsepower. This vibration isn’t noticeable when the engine is idling or accelerating through the gears but is often misdiagnosed as a driveshaft out of balance of out of phase. HPI Savage Forum is the best known HPI Savage Forum. I got it with the optional 3. First, the force. In the lower gears, because the gear ratio is higher, the wheel torque is higher thus the vehicle (engine) accelerates more rapidly. Re: Close ratio gears/diff Originally Posted by nsxtasy Yes, LATZKE has it exactly right, by noting that the short gears with 4. 9 go for a bit too but the 3. Hello, I recently put in a 6" lift and 35" tires on a 08 Dodge Ram. Changing transmission ratios. It does this with gears. A MPH Calculator from RPM and Gearing. 4L engine having the 3. Best to find out what you have first before trying to decide what ratio you want. 73:1 LSD at the moment but that ratio has been so hard to find for a reasonable $$$. 15:1 ratio, and is a limited slip differential with 25% maximum locking. PP is suited for road course. This will be able to demonstrate increases with In-Gear speeds for increase RPM limiters. Do I need to change both the front and rear diff ratios to convert to 4. Techno’s “Know your car” Series # 8 Mazda MX-5 Gear and Differentials Ratios and Tyre Sizes Introduction. personally I think a low diff ratio that improves accelaration and response is a much better idea and the slight trade off in fuel consumption that may arise is worth it. The results are the circumference of the drive wheel/tire combo (in inches), gear ratio and the potential maximum speed (in MPH). Note the following: many trucks are sold with 'towing packages' with more appropriate axle ratios over the entry level equivalent. 5 which is a 3. the rear end ratio depends on the size of tire you are running as well as the type of torque convertor example if you are running a 3500 stall and 26 inch drag slicks the you probably would want to run a 3:90 gear there is many sites out there that can help you figure out what you want to run for a rear end ratio to get the most from your vehicle. Does this actually make the car faster? To test, I did three second gear acceleration pulls before and. Examples of this would be 4. Many factors have been taken into consideration to make this calculator as accurate as possible, but certain variables like vehicle weight, battery quality, drivetrain drag, etc can have an effect on the actual speed. If you are unsure of your ratio, you can call the dealer with the VIN, check the glovebox for production codes, or look at the differential itself (there should be a small tag attached to it). Electric Potential and Electric Field We have seen that the difference in electric potential between two arbitrary points in space is a function of the electric field which permeates space, but is independent of the test charge used to measure this difference. Your rpm range will be approximately 2,700 with the 2:80 to 3,500 with he 3:50 at 60 mph. *note* the 86-88 5kqt shares the same ratios as the 200 10v, but has a locking center diff. If you want more acceleration and less top speed, use a smaller pinion gear (fewer teeth). The crown wheel is always a lot bigger than the pinion, so the final drive is a reduction - the wheels rotate slower than the propeller shaft. The SI pressure unit is called the Pascal (Pa); 1 Pa = 1 kg m-1 s-2. 7% ratio change for far less money involved, and if it doesn't work out you can switch back. A limited slip (or "posi") differential (or "diff") is a means to apply power to the ground when traction is limited, by sensing which wheel has traction and applying force to it, while maintaining the wheel speeds to be different when turning instead of only to the wheel that is without traction like how an open diff works. Read this Flow Measurement ebook for interview preparation. The gear ratio examples I have used here, were for a Mercedes G - and Mercedes offers diff gears that are pretty close to that desired number - 6. For acceleration & fun - 3. A high numerical gear ratio is called a low gear or low rear end, and vice versa. And u can get an idea of the differences in diff ratios. 55:1), the gear set becomes "taller," and offers less mechanical leverage. 9 you'll get better acceleration in 3rd and 4th, and. 90 would be great for a street and strip car, whereas 4. The Mitsubishi Lancer Evolution, also known as 'Evo', is a sports sedan based on the Lancer that was manufactured by Japanese manufacturer Mitsubishi Motors from 1992 until 2016. benifit with better acceleration with a different diff/ratio of differant ratios, 4. 1 transfer ratio a 3. 63:1 ratio without problems, especially if the engine has the twin HS4s. Wavetrac gives you quicker acceleration and faster cornering by driving both drive wheels instead of just one. The sweet spot is a crawl ratio that gives the best of all worlds: short enough to. Factors to consider: 1. 1 rather than 1. Acceleration vs. The differential gear ratio will make a difference in acceleration no matter what transmission it has. 9 and 30/20 = 1. We'll be focusing on what the Torsen is and what it does, which cars they came on from the factory, the various gear ratios available through the years, what's needed to upgrade your specific year Miata, and some recommendations at the end. Minimal rotational inertia for fast acceleration. Lean muscle. 10 times to spin the wheels once. Does this actually make the car faster? To test, I did three second gear acceleration pulls before and. 82mph in 3nd is possible with the M12 gear set and 4. Hi Howard First you need to check your diff regarding ratio, originally there would have been a plate on one of the back plate retaining bolts, this would have had a number on it, example 43/13 which would equal 3. It is probably most useful for seeing the results of changing the final drive ratio of a bike. TL;DR Changing a gear's ratio only changes that one gear. The American market cars were always unique to the US, de-contented and mechanically different in order to keep a lower price. Acceleration and Power. Acceleration is the rate of change of velocity with respect to time: a ≡ dv/dt. This helps with several things. Shift points are less critical in keeping the engine in the proper power-band. G'day people, just wanting to know the basic concept of diff gears and how they affect acceleration, will a ratio of 3. (as has been stated here already). Call us today if you think you may have a problem or want to optimize your vehicle. By increasing the differential ratio to 3. The fours ran 3. It has some of the best aftermarket support I've ever seen and there is a wealth of knowledge out there for them. 9 diff centers and you can tell when going up a slight rise as the old 4. Read this Flow Measurement ebook for interview preparation. For example, a ring spacer may allow you to use a 3. The Alto with 77bhp per tonne is faster to 100 kmph in 4th gear than the Kwid with 80 Bhp per tonne by a whopping 7. Usually the humming gets louder under acceleration. I use mine on the road but want to build it mainly for draging. •Fast gear ratio chan. 2015 Ford Mustang GT Long-Term Road Test drive ratio makes each rev responsible for fewer mph than the standard car's 3. The higher numerically (i. Ford down graded to the same diff as the Corona, Sigma unit. The maximum acceleration factor is 20%. 3 cubic feet (SAE), and a 67. 23 to one, 3. : this calculator allows you to enter 3 of four variables and it will compute the other based on your input. I will post a list of Porsche equivalents (front and rear) with ratios and part numbers shortly. The numerically higher gear ratio (in this case, 4. With a 23 to 25 inch tall tire and an automatic transmission, use a 2:80 to a 3:50 gear ratio. We can increase acceleration, braking and cornering forces by manipulating suspension adjustments. Race cars have rear end gear ratios of around 4. 75 will give you faster acceleration and 3. Automakers Offer Variety of Axle Ratios There is good reason automakers offer a variety of different axle. This new car takes Ferrari’s extraordinary achievements with aluminium technology, begun with the 360 Modena, to a whole new level, and offers a series of extremely significant innovations directly derived from the Ferrari Formula 1 single-seaters. truck came with the 3:889 Diff. The resulting output is defined in a second order differential equation where the applied cyclical force is equal to the proof mass times acceleration plus the damping constant times velocity, plus the spring constant times deflection. We can increase down force levels with suspension tuning with the adjustments of ride height and spring rates for example. The vibrations can be periodic, stationary. 7 Midget/Sprite diff. What is the best! gear ratio for a EB2 - 40i gli with 2. The mechanical advantage of a shorter final drive still improves acceleration in both cases, regardless of the type of torque source (torque is torque, regardless if generated by an ICE, AC motor, or human with a wrench). I ever made to mine was to change it to a 3. mXa high performance acceleration packages consist of our of research & development of the Hellcat platform with testing on our in house dyno, cruising around town and data from the track. With the 6. Crawl Ratios And Off-Road Gearing: Everything You've Ever Wanted To Know! and n diff is the axle ratio. Your rpm range will be approximately 2,700 with the 2:80 to 3,500 with he 3:50 at 60 mph. 78:1, so it’s got long legs and the engine is just ticking over at highway speeds. "The reason we [GM] offers the 3. We'll look at two simple examples of ordinary differential equations below, solve them in. The TracTech Tru Trac is another torque biasing diff, biasing ratios between 2. EEP - Electrical engineering portal is leading education provider in many fields of electrical engineering, specialized in high-, medium- and low voltage applications, power substations and energy generation, transmission and distribution. If your differential ratio now is R, changing to 4. For racing, the highest permissible torque bias ratio is usually desirable. Applicable state taxes, title, registration, and service fees not included. Do you want more acceleration, and easier burnouts?. Your solution using a different gearbox also works. Alternatively, safely jack up rear end and get a helper to turn a rear wheel one revolution while you count the revolutions of the propshaft that you have marked with a datum point. The gears within your transmission aren't the only gears in a car. I'm wondering what the best diff ratio would be for my setup? Current specs are: 351W in 65 coupe, T5 ratios unknown? - Maybe 84 model rebuilt, 3. 27, however the housing is physically larger, due to. Most street applications are closer 1st and 2nd gear ratios for that off the line 0-60 boost or for the fast exec a lower 2nd and 3rd ratio give improved overtaking flexibility and 30 – 70 mph. The VR4 and GSR gearbox share most of the same gear ratios believe it or not. if you get a pic i could tell you. It shows. 5 if i was you. A ratio from 3. These assumptions are not reflected in reality. A limited slip (or "posi") differential (or "diff") is a means to apply power to the ground when traction is limited, by sensing which wheel has traction and applying force to it, while maintaining the wheel speeds to be different when turning instead of only to the wheel that is without traction like how an open diff works. Gear Ratio's can be difficult to understand, but with a fairly brief explanation I will attempt to make this often misunderstood equation VERY easy to grasp. I got a VH commodore with a 308 (253 diff which i beleve is the same as the 6bangers) so how hard is it to bolt in 3:55 gears and where can i get them, i know the 2. To this end, the vehicle should have very high performance in terms of acceleration, braking and handling and be sufficiently durable to successfully complete all static and dynamic competition events. 0T Premium Plus : Strengths of this model include interior comfort, fuel economy, extreme efficiency, Acceleration, and luxury and technology features. Jeff - the reason for the dyno in the 1:1 gear ratio is due to the Dynojet. The mean value of h measured at sea level is 76. Diff Lab is the largest retailer of BMW differential products in Australia. 5in straight-through exhaust and a pod filter?? -=T W S T D EB=-. The gears have to be matched to your application (what event are you trying to do the best at). That’s probably good advice for the trail but may not be the best for your needs. 55 gear ratios. Regarding MPG, the M3 is fitted with the lower Diff 4. 36 the best options? will a 3. As an example- Accelerating to 60mph is a common measure so most manufacturers set up the diff gear to be able to hit 60 in second gear so that they don’t lose time with an extra shift (See the attached image for a t3650 transmission and 3. The acceleration is not too bad with the 3. Honda K-Series Engine Compression Ratio Calculator. No further increases are made after this figure has been reached. Higher order models are rarely applied g These dynamic models are typically analyzed with the Laplace transform, which converts the differential equation into a polynomial expression. Or, change input variables (engine RPM, axle gear ratio and tire height) to determine vehicle speed in each forward gear. Define acceleration ratio. Morris Minor Gear Ratios Brian Laine The Morris Minor was meant to be used around town and on secondary roads. Pictured above are the gears in the rear end of a car. 55 gear ratio at the moment and it tends to like to rev very high which I predicted to be the case. As the inertia mismatch. All orders include order tracking. These types of ratios are commonly referred to as “lower” or “deeper” gears. The cargo box is 5 foot 7 inches in length, with a volume of 50. Therefore I want a torsion diff, however these are only readily available with a 4. 9:1 cause a car to accelerate. 4-liter V-8 always pulls strongly, whether you’re cruising in the city or. Once you shift up, you have less overall torque in the higher gear than the stock diff in the lower gear. A higher ratio for instance 3. 5 43T Parts Number MR2055P is 64P 53T •Light weight. The best way I can describe. The level of acceleration of a vehicle will be directly impacted by the amount of grip and traction of its tires. Your ratio can only be so big before you start to hit some diminishing returns. There are many "tricks" to solving Differential Equations (if they can be solved!). A full understanding of accelerometer dynamics is necessary in relation to characteristics of acceleration, vibration, and shock. Hello, i want to update my Ram with cummins 5. Rear diff gear ratio Mazda-speed. Diff Lab stocks MFactory, OS Giken, Cusco, Wavetrac, Drexler and genuine BMW Motorsport products. Changing the differential ratio will have a big impact on your performance. So if you have a 3. if you have the 4. In physics terms, acceleration, a, is the amount by which your velocity changes in a given amount of time. 75 meters per second squared is the acceleration of this system. Knowing the gear ratio of your F-150 is important if. If you need a rear end specialist, look no further. The Audi Q7 is driven by your choice of a 45 TFSI® (2. As you can see, the GCWR of the 3. The Chart below shows E36 E46 E90 E91 E92 E93 E85 E86 E83 E82 E88 transmission gear ratios. now ive heard that with a little magic you can make the a 6speed MT diff fit into my auto, which would give me shorter gearing and better acceleration changing my diff ratios from 3. The down side is your gas mileage will take a big hit and you will cruise on the interstate just shy of 3000 rpms going 75-80 mph. Different transmissions have different ratios according to how the manufacturer expects them to be used. 1 and second is 2. acceleration ratio synonyms, acceleration ratio pronunciation, acceleration ratio translation, English dictionary definition of acceleration ratio. This means that the differential can transfer 75% of the torque to the wheel with the most traction. A high numerical gear ratio is called a low gear or low rear end, and vice versa. 92 lsd and put a transport SPC type 9 and the difference was immense. There is also a 3:58 Diff used on some of the Euro Grey Mkt cars I have seen at PNP. Find the output torque and speed for a gearbox that increases speed with this Gear Ratio Calculator. They are both vector quantities i. 44 final drive ratio LSD. BEST MPG RATIO: If getting the best fuel economy is priority, then choose the lowest numerical number offered, such as 3. Brek is right When I did my drag car I went with 4. 9:1 cause a car to accelerate. When either velocity or direction changes, there is acceleration (or deceleration). Best to find out what you have first before trying to decide what ratio you want. It has enough power for most tasks, but the larger 5. 42:1 ratios. 60:1 - Super highway economy. The Audi virtual cockpit can make for. Too much i think. Ask Question the gearbox ratio multiplied by the differential ratio. Rather than making the 3-4 shift at 74 mph you can push it up to 82 mph with the same 6000 rpm engine speed. I agree that best power and ACCELERATION will be at 300 rpm. MPH=Tire radius divided by 168XRPM divided by gear ratio divided by 1. 00 rear gear ratio, it will out put 3 times the torque at the wheel. A fixed pulley is the only pulley that when used individually, uses more effort than the load to lift the load from the ground. 88 differential (ring and pinion) gear ratios to improve acceleration when running 35″ tires. 8:30pm ET. For acceleration & fun - 3. The crown wheel is always a lot bigger than the pinion, so the final drive is a reduction - the wheels rotate slower than the propeller shaft. The same force applied to a second object of mass Finding ratio of 2 masses with acceleration | Physics Forums. When you change gear ratios, you don't get something for nothing, for gas mileage and fair acceleration go with 3. 95 ratio will give slower acceleration because the 'mph per engine rev' is greater. Pictured above are the gears in the rear end of a car. Cruising however is more suited to a lower number ratio as you have no need to accelerate quickly and you will also improve your f. The acceleration calculator on this site considers only a situation in which an object has a uniform (constant) acceleration. Force is a product of mass and. real limit is rather your skill then. 92857142857 x 3. The above posters have answered in elaborate and technically accurate manners. We'll look at two simple examples of ordinary differential equations below, solve them in. Do I need to change both the front and rear diff ratios to convert to 4. Therefore I want a torsion diff, however these are only readily available with a 4. Trucks equipped with 8-, 9-, or 10-speed automatics may work well with 3. The factory gear ratios in the transmission and rear-end are chosen to allow for RPM-friendly highway cruising, while still providing respectable acceleration and top speed figures. Acceleration vs. The XR6 of the same year carries a 3. So it is best to choose a value halfway between so there is no confusion. both magnitude and direction are required to fully specify them. 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. A lower (numerically higher) gear ratio, such as 3. The Highs and Lows of Differential Gear Ratios. If the same 400 ft/lb engine has 4. The differential gear ratio will make a difference in acceleration no matter what transmission it has. 82mph in 3nd is possible with the M12 gear set and 4. 11 ratio and will have higher top speed than the 4. 11:1 gears, this means. 7 compares to 4. 73's are good highway gear ratios 4. 846 (in other words about a 2% increase in acceleration, just enough to fine tune the way the bike responds to the throttle. We can get lots of different gear ratios out of this gearset. Differential 'whirring' noise at all speeds regardless of acceleration, deceleration or turning. I swapped the 4. It has a good amount of acceleration off the line and has a higher torque rating than horsepower, sitting in at just 260 HP and 305 torque but is easily modified and takes to the modifications well. benifit with better acceleration with a different diff/ratio of differant ratios, 4. Diff Lab stocks MFactory, OS Giken, Cusco, Wavetrac, Drexler and genuine BMW Motorsport products. 1 rather than 1. 10 rear end is massive acceleration and derability the only downside to this is when you up the gear ratio you lose top end speed, for example if your car has stock gears and. there is a 'true' 3. The world's largest digital library. Front and rear diff locks helped prevent the ‘spin-out’ that smashed many 100 Series’ diffs. 23 Now say if I wanted faster acceleration to try to keep up with an XR6. The no brainer is the 3. 0-liter turbocharged TFSI® four-cylinder engine that produces 292 horsepower and goes from 0-60 mph in just 4. Chassis The E39 M5 uses aluminium-intensive MacPherson strut front suspension and multi-link rear suspension, as per the other V8 models of the E39 5 Series range. These types of ratios are commonly referred to as “lower” or “deeper” gears. The same force applied to a second object of mass Finding ratio of 2 masses with acceleration | Physics Forums. We have investigated the influence of the vortex layer to the heat exchange in a gas flow. truck came with the 3:889 Diff. Given the initial and final velocities, v i and v f, and the initial and final times over which your speed changes, t i and t f, you can write the equation like this: In terms of units, the. This means the 3. Chart 4 shows acceleration in fourth gear for a 405 hp car with a 3. It is the result of recently having shoulder surgery and therefore having lots of time to sit at this damn computer. 1 rather than 1. The Gear Ratio Calculator below will help you select the best gears for your needs. A lower ratio means that the engine rpg speed and the tires are moving at closer to a 1 to 1 ratio or possibly even lower, where the wheels are moving faster than the engine rpm. I think all the GT`s have a 3. 10s for anyone going to larger tires. The Mitsubishi Lancer Evolution, also known as 'Evo', is a sports sedan based on the Lancer that was manufactured by Japanese manufacturer Mitsubishi Motors from 1992 until 2016. What's the best diff for e30 318is? looking for pro's cons of different ratio's. PIPELINE ENGINEERING The differential form of the potential energy change is. The differential gear ratio will make a difference in acceleration no matter what transmission it has. 545, your rpms are not too high on the freeway. By Mike Pauken. Use this calculator to determine your gear ratio and vehicle's speed in any gear and any engine RPM for best performance. ie the engine is Revving way to fast at Motorway speed, Has Anybody Changed the rear Diff? I would like to try a diff out of a 120 cdi, as it has the tallest Ratio. Damping, Damping Ratio, and Linearity This section concerns the physical properties of acceleration, vibration, and shock measurements in which accelerometers are commonly used. We assemble new limited slip differentials or LSDs to suit most road-going and race-prepared BMWs. Students could try this. 42's on the street and have a 235/60R14 tire which probably yields closer to a 3. 92 gear ratios IP: Logged Message: The only downside to the 3. (as has been stated here already). 23 and up, with 28 axle spline. A street car with strip gears is usually too loud ,to thirsty and not pleasant as a daily driver. This calculator is designed to give the potential speed values of a vehicle, based on the RPM of the engine, the ring gear and pinion gear ration, the final transmission gear ration (usually 1. Limited Slip Differential (also referred to as “posi” and LSD): Limited-slip differentials use the same spider-gear arrangement as an open carrier, but add a clutch pack, worm-gear arrangement or tapered cone setup to feed some power to the wheel with the least traction, regardless of road conditions. 44 or even 3. Changing to a taller or shorter final drive ratio can customize your overall gear ratios, specific to your application. EEP - Electrical engineering portal is leading education provider in many fields of electrical engineering, specialized in high-, medium- and low voltage applications, power substations and energy generation, transmission and distribution. Hi All, I have a 2004 Vito 109 cdi, and I am badly disappointed in the Rear Diff Ratio. Every Tundra features a V8 engine. 08 be too tall?.