What Is A Good Gear Ratio

This chart has been revised with actual ratios. 4 so the rear gear ratio is 3. 0 (or something with comparable power) it would serve my use just fine. If you have fewer just leave the unused ratios set to 1:1. You will learn a lot about applied mechanics and gears, all while having fun riding your bike. It is equal to thrust per unit mass multiplied by the velocity of any vehicle. Changing the gear ratio is an easy way to alter the performance of your car so you can use the available power more efficiently for the track or area you are driving on. As I mentioned above, a 4 speed with granny gear can really use a 2. CarTest 2000 is particularly useful because it includes an iterative gear ratio optimization routine. 23:1 final drive ratio is 9. Here are some of the best chain and sprocket kits available for several different applications/uses. Are you happiest on a triple or do you prefer a compact? Triples offer lower gearing, but preferring triples doesn’t make you weak – it just indicates that you prefer spinning. 29 gear has a lower ratio than a 4. However, power is compromised with an increase in ratio, making top speeds more difficult to achieve, in much the same way that it is hard to climb a hill on a bicycle in high gear. But like GM-Tech said the VIN will tell us because we can run it on GM-DealerWorld. w/the shorter tire. The gear ratios of the clutch and final drive will only make the go kart faster if the engine has the power to move it faster. Gear ratio affects a variety of driveline combinations, so it’s important to know what the gear ratios are for a gearbox you might be swapping into your ride. Gearing your dirt bike is a compromise ratio and as soon as you change your conditions, you might need a new compromise. The gear ratios you use in the hills are dependent on numerous factors, such as fitness level, grade of the hill and desired cadence. A good way to calculate this is to multiply. The truck itself is not worth tring to restore, but the transmission components are still good in it. Gear Inches is gear ratio times the diameter of the rear wheel. 29 gear has a lower ratio than a 4. rpm = mph x gear ratio x 336 / tire diameter To use an example, let's say we want to know what gears should be installed when putting 36" tires on a transmission, 3. A higher CBD content in strains gets rid of the common associated effects of THC – the good and the bad, such as euphoria as well as paranoia and anxiety. A properly set-up fixed gear has a perfectly straight chainline. 73 it will give you good seat of the pants feel and cruise good on the interstate. Therefore, the gear ratio is driven/drive = 21/13 ≈1. This chart provides values that represent a 1:1 ratio on a manual transmission. This is 21% lower than the first gear ratio in a TH-350 ( 2. The fastest speed is a 1:1 ratio – this is just for winding up the line once the boat is launched. Whenever I wander through car dealership checking out the new pickups and SUVs I never fail to hear other tire kickers ask about the fuel economy of a tow vehicle they are potentially interested in buying. Re: gear ratio opinionsfor a 6yr olds MINI BMX bike wow thanks! that is very helpfull i thinkt that proves that changing to a 35x13 was a good move, all those ratios work out to 52, 53, or 54ishthe new one i just installed was 53. The stock gearing on the XR250R is 13 teeth on the front sprocket and 48 teeth on the rear sprocket. But the science of gear ratios becomes known when we discover the different fishing scenarios and which ratio best suits them. In terms of the number of teeth that would be the number of teeth in the cog divided by the number of teeth in the chairing and not the other way around. The ratio refers to the gear ratio inside the transmission. Bicycle Gearing and Gear Inches. One solution to determining your actual rear axle gear ratio is this:--attach a piece of tape to the drive shaft; attach a piece of tape to a rear wheel. The gear ratio most interesting to 4x4 truck owners is the ratio between the driveshaft and axles - the differential gear ratio or axle gear ratio. Count the number of teeth on your ring gear 3. SS you have no choice. Cruising at 75 MPH, the motor is ticking over at three grand and punches through the 100 mark in nothing flat. i am sure their is some complicated formula for figuring these things out, but from experiance i can tell you that with a 3. 56? if not, what size should i. Our product range is continually growing to meet the needs of consumers for new ratios and applications. I will be towing a 24' camper at times and a tow dolly. Find many great new & used options and get the best deals for Lew's Speed Spool LFS SS1HLA 6. Minimum gear would be in the 3. 42 is about as high a ratio to use for towing and performance. Therefore, mixing and matching reel brands might be what we need. 55 for game-changing acceleration on the track. Car manufacturers must walk a tightrope between absolute performance and absolute fuel economy when determining final drive gear ratios. It isn't really the size as much as the diameter ratio of the two gears. Good point USCGRET/E8. The later versons are reportably good for 400 hp. Any "nice" dealer will do this for you,I do it all the time. Your axle ratio, transmission ratios, and even tire diameter all factor in, so be sure to look at the big picture. Changing the gear ratio is an easy way to alter the performance of your car so you can use the available power more efficiently for the track or area you are driving on. 10 gears have a travel of 21. I don't know about dragsters but those ratios would work ok in a door car. the pinion. Change Sprockets - Change Speed. SPEED CALCULATIONS If the gear ratio is known it is easy to calculate a theoretical top speed along with propeller efficiency if the actual boat speed has been measured. hello everyone, im looking to change up the gear ratio in my nova's 10 bolt (8. If you are using lures that need fast retrieves, a higher gear ration is recommended. In cities with a good bike infrastructure, a 2. Then to count 12 hours, a 12:1 ratio is needed. Select your fishing reel gear ratio by your specific type of fishing. I also have the stock rims and tires though. Leading provider of high performance automatic transmissions, torque converters and drivetrain components for race, street/strip, hot rod, street rod and towing. A first gear final ratio of around 10. Gear ratio for 35s and 37s I have a 2013 JKU Rubi with 35s i currently have 373s and they suck to say the least with an auto tranny and lots of hills so i am regearing. Ratio definition is - the indicated quotient of two mathematical expressions. Bottom gear / Top gear = Gear Ratio Example 43/27 = 1. But first, some history. For example the lowest gear ratio'ed truck is the 4 cylinder 2wd manual 5 speed; but you would not want that truck to tow. 73 it will give you good seat of the pants feel and cruise good on the interstate. but the lower gear ratio will give you better acceleration. Gear Ratio And Tire Size Calculator When you change your tire size you need to make sure you have the right gearing to get optimal fuel economy and power. 73's will probably drop feul mileage substantially, and if your 5. Listed are the expected RPM's at 60 MPH with a given rear end ratio and tire height. 55:1, meaning the drive shaft turns 3. 12 X 38" = 4. You might not be able to tell exactly what gear you have, but you'll be very close. GM 4-Speed Automatics 700R4/4L60E/4L80E There are two basic GM 4-Speed automatics: The light duty 700R4/4L60E found mainly in half ton and car applications, and the heavy duty 4L80E in the heavier applications. It is also the same letter that Volkswagen uses on the end of the ring & pinion part number to identify that gear ratio. Numerically lower ratios produce top speed while numerically higher ratios produce more off the line acceleration; For manual transmission Mustangs the 3. The way it was explained to me is set the rear gear to redline accross the finish. Here is a good way to think about it: If a Corvette has a differential ratio of 3. The greater the reduction, the more revolutions the motor makes to drive one spindle revolution - - and the less the motor has to work for that revolution. Gear ratio is the speed of a gear multiplied by the number of … How to Calculate a Belt Conveyor … A high monthly electric bill can be a good reason for wanting …. 34, 1:1, and. General guidelines for gearing ratios state that between 25% and 50% is best unless more debt is needed to operate. Now coming back to topic , for good street use and drag racing its very imp to get the right balance between the gear ratios. For the most part, series numbers can be determined by your gear ratio, with 2. What's a good gearing ratio for a 150cc gy6 scooter? so as i can reach atleast 100km/ph. This is why you take off quickly in first gear but don't go very fast. Don't let anyone tell you that your ratio is good or bad. 94)) I appreciate any input, if you see any mistakes or any thing you would like to see added please let me know. Whats the specs and is this also a daily driver or just your weekend toy?. Example: 2. What are the gear-inch comparisons? Using a gear-inch chart is one way to compare gear ratios without riding the bike. As the ratio increases, so does the potential top speed. This is the Z Code 2. But how much gear is needed with the overdrive combination? That's a good question, and one that isn't easy to answer. An easy way to spot a nice ratio after a while is by visual id. Using that information, calculator and the SWAG method I came up with an estimated 1. So if the pinion gear has 10 teeth and the ring gear has 30 teeth, the ratio is 1:3. The new Fin-Nor Offshore conventional star drag looks like an excellent reel. The higher that number the better acceleration and higher RPMs at. Where many transmissions had a fourth gear added on as an afterthought, Ford's new transmission was designed with a fourth gear integrated into the gearset. Gear Ratio & Tire Size Chart. Gearing your dirt bike is a compromise ratio and as soon as you change your conditions, you might need a new compromise. Gearing & gear ratios. - (1:1) Auto tranny gear ratios. My question is will I need to change out the rear end in my truck when I put this 2 speed PowerGlide transmission in? I do not know what gear ratio either truck has in it currently. This is the ratio of gears in the rearend (differential) that you may have heard of in the numerical terms 2. when looking into a straight truck, what is a good gear ratio to have that will provide a good fuel mpg while also providing a good enough torque while under a heavy load? I notice a lot of straights have ratios in the 4. You can try different things with your fixed gear apparatus proportion constantly and you will eventually arrive at the same result that the 44/16 proportion or 2. The Falcon offers the lowest rotating mass of any transmission. To be back to stock I would need a gear ratio of 3. Must be good for dj's, skate park and bmx track. Tows so easily and still good mileage. Power is transmitted from the transmission to rear end 1:1 in high gear. 92 to have the extra tow and pay load capacity if and when I need it. 13 6speed diff, you'd be going 100 MPH!!! That's a little higher than most people want their "cruising gear"!!! And the wide ratio magnum is even worse! That is why I sell 99. 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. The first gear ratio of a TH-700R4 is 3. I would be interested in opinions for a good rear gear for 12 bolt rear end. Desired shift RPM: First gear ratio: Four Speed : Five Speed : Six Speed w/OD: Optimum 2nd Gear Ratio: Optimum 2nd Gear Ratio: Optimum 2nd. 73 or higher is too much gear for cruising unless you have overdrive. Tire size table. Count the number of teeth on your pinion 2. The gear reduction ratio represents the number of motor revolutions required to turn the spindle one time. Colors group similar values. For one chain ring take the ratio of adjacent gear ratios. Example: If your max HP is at 6300 RPM use 6300 for the RPM. An easy example: If we wanted our motor to spin exactly twice as fast as the wheel (2:1 ratio), then the gear on the wheel should be exactly twice as big as the gear on the motor. 68 Round to the nearest gear in this case it is 4. Without that higher speed gear ratio reel, it’ll take you longer to pick up any slack line and without the right rod, you won’t get a good hook in and stand a chance of losing the fish. Gear ratio is simply the leverage that you have in a set of gears. It is derived from the Tremec T-56 6-speed manual transmission. So the question I would have for the experienced Icenman racers out there is what gear ratio have you felt is most beneficial at this location. Technically, the number should be expressed as a ratio, such as 3. I use medium light spinning gear with braid and a fluorocarbon leader to throw jerk baits. The gear ratio for go-karts is a measure of the potential performance of the kart. Tire diameter, transmission choice (with or without overdrive) and desired highway cruising speed. 22 final at a 3/8, rpm is about 6800-7000, granted its in a street stock, tire size is 83 inch. The gearbox allows for winching at different ratios, or speeds. Select your fishing reel gear ratio by your specific type of fishing. Pretty much what's been said. However short ratio gear boxes if designed properly could do wonders on a NA car on a strip. Gearing for cruising To find the ideal gear ratio for cruising use your RPM at peak Torque. Gear ratios were aimed at providing reserve torque. 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. The best gear ratio you can climb on is the one that your ego can handle the best. That’s really key, because slower reels can’t keep up with a Smallmouth that’s screaming to the surface and throwing slack in your line. 55's would be PLENTY of gear for take-off, esp. 00 first gear, you would want about a 3. Nov 14, 2018. The gear ratio for go-karts is a measure of the potential performance of the kart. The Sonnax 2. Added March 2014-Did a couple of trips this winter with 3 sleds, extra fuel cans, all our gear in cold temps and in the snow. A higher CBD content in strains gets rid of the common associated effects of THC – the good and the bad, such as euphoria as well as paranoia and anxiety. But some did come with 8" diffs. My tip here is that the gear ratio between the worm gear and worm is the number of teeth on the gear divided by the number of flutes in the worm. Switching to a 45-tooth driven gear (the most teeth available) would translate to the vehicle traveling at 78 percent of indicated speed - close but not perfect. Yes,I believe 3. The gear ratio is therefore 2:1 (pronounced "two to one"). Or even if you have really aggressive fish you can speed up the topwaters. the boxes below were used by GM in the 70's only the ratios marked * are First Gen boxes. Numbers are good but gear ratios on paper are nowhere close to realistic when you actually drive the Jeep with all the variables the world throws at it. For example, using a high gear ratio such as 53 x 12T is equivalent to riding a penny-farthing with a front wheel that is nearly 10 feet (or 3m) tall. 92 gears, it would spin the tires everytime you tried to take off, and probably require a gas guzzler tax. So reduce the gear ratio number for gear 6 (… and you’ll have to reduce gear 5 and 4 to maintain good gear progression). A higher CBD content in strains gets rid of the common associated effects of THC – the good and the bad, such as euphoria as well as paranoia and anxiety. Here are some of the best chain and sprocket kits available for several different applications/uses. the higher the gear ratio the faster the retreive the trade off with high speed is less cranking power. Also note changing your rear gear will affect your speedometer readings, and to correct them you will need a handheld tuner. About this Engine RPM / Tire Size chart: 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. A ratio of 3:1 is used for lighter loads or for the initial winching of a heavier boat onto the trailer. The exact same gear ratio can be achieved with a 48-24 combination, as well as with 28-14. 73 gear set is the go to set. For example, if you have Ultegra chainset, the two ends of the scale would be an 11-32 and an 11-23. But for road racing, if there are no standing starts or pit stops, you can be less concerned with a low first gear and instead make it higher and possibly useable on the course. 06 first gear which is good for initial take off but this makes the transmission have the widest ratio …. For a person who tows more often, and heavier loads, the 3:73 or 4:10 may be more appropriate. You can't tell me that 3. 23 (Gear Reduction Ratio (GRR) = 1/Gear Ratio (GR)). Pretty much what's been said. Spinning gear uses a spinning reel with a fixed spool that is. 1 times every time the rear wheels turn once. 75" ratios were 2. 88 (not suggested, 1/8 mile drag race gear). 55 gear ratio he recommended for his 33's will end up driving well or even close to it. I would estimate losing 1. Gearing as high as the highest ratio that is available for the Corvette Dana 44 gear case, 4. What does this show? Even if you have a bike with a standard front chainset (53/39 and rear cassette of 25) which gives you a lowest gear ratio of 39/25 (1. Need help with reel size and gear ratio. That was the only ratio they had. The shift from 3. The auto has a 3. Use our gear ratio calculator to find the effective gear ratio your vehicle will have with a new tire size. If you have no desire to ever race your car, a set of gears with a ratio of 3. If I fished crankbaits more I would probably take a long look at the 3. 50:1 is a popular ratio when you still want to do occasional highway driving. When buying a fixed gear or single speed bike it's very important to find the right gear ratio for riding. I know that the idealized problem using gears and force without considering biophysics will tell me there is basically no difference in energy between riding a bike up a hill in low or high gear. The best ratio is to have your engine run at the sweet spot RPM at the speed you will be running most of the time. That means that the gear ratio is. Pull as tall as you can in low gear with about 7 degrees of timing out on the hit. To find out what the final gear ratio is, you must multiply the trans ratio by the rearend ratio. xx A M22 works well with any ratio from around 3. 56 you would need OD. Understanding your vehicle's gear ratio is a powerful tool when making changes at the track or around the. 71 ratio or. please help on what the gear ratio should be and im. Numbers are good but gear ratios on paper are nowhere close to realistic when you actually drive the Jeep with all the variables the world throws at it. 0 to the above gear ratios eg; Silver Can Brushed becomes 3. (see gear ratio image) As an example, a 30 tooth rear sprocket and a 10 tooth front sprocket equals a 3. If you have a 26" tall tire and given gear ratio, install a 30" rear tiresee just how sluggish the engine/car becomes. B and C are recommended for slow pitch jigging. This article also explains why the Dana 30 is a good low buck axle upgrade for '45-'71 CJs. in this case the ratio is 2 to 1. Im trying to figure out what my gear ratio should be on my 212cc predator If I'm not mistaken the sprocket coming off the motor is a 10 tooth. One of the most common gear ratios for go karts is 11-12 teeth on the clutch sprocket, and 60 teeth on the axle sprocket. Now coming back to topic , for good street use and drag racing its very imp to get the right balance between the gear ratios. But the Powerglide was typicly used with around a 3. I like the way the slower ratio get the bait down deep and keeps it down. Fixed gear bikes: What's the best gear ratio? June 09, 2015 12 Comments. 73 rear (assuming 29-inch diameter tires) is a 18-tooth drive gear and 35-tooth driven gear. 88 first, 1. good gear ratio's. I was bragging about my "racing" days, and gear ratios were mentioned.  Fishing reels with a gear ratio of 6. A well-timed shift point is also important on the track. A 2:1 gear ratio (like a 32x16) is what most new single-speeds come with. 10 Plate / 2010 Ibis S3 - Buckets, Bose, Black Optics Grill, GSM Prep + IPhone4 cradle, Light & Rain Sensors, Interior Light Pack, PDC+,19" BBS CH Black Edition Alloys, GIAC Stg1, VWR Panel Filter, VWR custom front springs, VW Uprated Rear ARB. 75 is an ideal one for a large portion of fixed gear riders. But that gear ratio would most commonly be referred to as "3. These calculators are designed to give the approximate engine RPM (revolutions per minute) based on the ring gear and pinion gear ratio, the height of the tires (diameter from ground to top of the tire while mounted on the vehicle) and the transmission final gear ratio. To find out what the final gear ratio is, you must multiply the trans ratio by the rearend ratio. The high-ratio "L2″gearcase ( 2008-2010 ) displays the line at the 9:00 position signifying that it is a 1. Gearing Ratio: A gearing ratio is a general classification describing a financial ratio that compares some form of owner's equity (or capital) to funds borrowed by the company. 8 times every time the wheels turn once. Yoyu may have to change the carrier depending on what gear you want to run. So a 4:1 gear ratio means the bail goes around four times during one rotation of the handle. Motor to Wheel Gear Ratio and Motor Type Examples. The stock gearing on the CRF230F is 13 teeth on the front sprocket and 50 teeth on the rear sprocket. Change Sprockets - Change Speed. How To : Choose Proper Gear Ratios. A lot of bike races are won or lost when the road heads uphill and so power to weight ratio is a key calculation in the pro ranks, but the principle is also important if you want to improve your. Enter the tire size diameter and the target vehicle speed in MPH. Nov 14, 2018. 41/11 is 3. If you think you want something different, check out your local bike shop and tell them Pure Fix sent you! Peace, Love & Soul, Pure Fix. 68:1 and as such it is a popular choice for those wanting a very low crawling gear. 36 rear axle gear ratio coupled with the 3. 75 second, 1. 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. much lower than that you will be spinning the motor faster all the time without a 4th gear. 55's would be PLENTY of gear for take-off, esp. 36) by switching your rear cassette to a 29 tooth (lowest gear ratio of 39/29, giving a ratio of 1. 1 ratio would recover line rapidly, but without ample torque to fight sizable fish. The second gear is called the secondary gear or follower gear. The program allows for up to three ratios in series. I'm guessing it has to do with the RPMs if I use a smaller tire my RPMs will be higher and if I use a biger tire my RPMs will be lower. You will find the overall ratio for the 4. Most racers know about gear ratio and gear ratio charts are listed in numerous places. 73 to one, and 4. 32, which would provide considerably less "grunt" off the line. 73 to 1 ratio. Always check your motor every few minutes to see if it is getting too hot. You can also now calculate when using different transmission gear ratios, like in first gear or in overdrive. Whenever I wander through car dealership checking out the new pickups and SUVs I never fail to hear other tire kickers ask about the fuel economy of a tow vehicle they are potentially interested in buying. Hot dawg!! That 1. The transmission was well suited for the large torque band of the Hemi V8, 3. 56:1 gears for the 33-inch tires is because they also work well with 35-inch tires. your obviously going to need to consider tire diameter, rear gear ratio and transmission gearing, generally your want the first gear in the transmission multiplied times the rear differential gear ratio to fall in the 10:1-10. 10 isn't offered on the ecodiesel, it would give even more torque for towing, and less mpg's highway. The gear ratio determines the important tradeoff between speed and torque. Two ways of listing ratios: OVERALL RATIO - measured at the wheel, and BOX RATIO - measured at the steering box output shaft. Although varying between riders, in the region of 90-110rpm is. How To Select Proper Rear-End / Differential Gear Ratio May 7, 2015 Roadkill Customs How To & DIY A number of factors must be considered when selecting a rear-end gear ratio (ring & pinion set). 90's, my first gear is a little to much because of my supercharger. This calculator is used to find the approximate maximum speed of your brushless-powered R/C vehicle. They give you two options for that reel, a low speed and a high speed. 73, best bank for the bucks, good cruising speed yet plenty of quick grab! 4. Post by AFinnestrand » Mon Oct 21, 2019 9:04 pm. Understanding Axle Ratios Automakers build trucks with a range of optional axle ratios. Page 1 of 2 - 3. You can tow a trailer with a little more power, or the truck will accelerate better onto the highway than the higher gear ratio. But first, some history. Good info, but only a reference. 61 2nd gear ratio would be spot on. This ratio shows the number of revolutions each gear makes relative to the rack it moves on. You can use a 'Gear Ratio Chart' to easily view what changes will be effective when changing the front and/or rear sprockets. However short ratio gear boxes if designed properly could do wonders on a NA car on a strip. 10:1 gear ratio. My mileage has improved by 2 mpg towing over my 6. 10's instead of the 3. 1 times for every time you turn the handle. By the end of this tutorial you should know how to calculate a gear ratio function of the gears and also the effect of the gear ratio on torque and speed. This is good for torque but not speed. The right gear set up is dependent on variables such as: track, weight, weather, tires etc. The gear ratio is the ratio of the number of turns the output shaft makes when the input shaft turns once. I'm looking at some 5. I am running 14/45 right now and getting 17 MPH. With a First gear ratio of 3. Considering the average circumference of a full spool of line is approximately 6 inches, 1. Working a crankbait, on the other hand, is more effective with a slower gear ratio, such as 5. It uses much the same gear ratios as the close-ratio M-21, but can take more abuse. A toothed machine part, such as a wheel or cylinder, that meshes with another toothed part to transmit motion or to change speed or direction. What gear ratio for a GWS Hybrid motor running on the Rare Bear Prop. For NOS/TC/SC cars its always better to have long ratios if not chances of hitting the revvlimiter are a plenty. Part 3 Ratios of Ratios. Pull up an RPM calculator, figure out the end gear ratio of your c4 (probably 1:1 but I'm not sure) and then toy around with tire size and gear ratios until you find the right. Pretty much what's been said. It's a"low" gear ratio but it has a high number. The gear reduction ratio represents the number of motor revolutions required to turn the spindle one time. Some quick technical talk The gear ratio of a reel is measured by how many times the spool turns for each single turn of the handle. 00 first gear, you would want about a 3. 10 and higher rearend gear ratios falling in the 4-Series. Colors group similar values. This is where an overdrive transmission is very advantageous. Need help with reel size and gear ratio. 75 gears i think (from a 302 ZH fairlaine)? for street use what gear ratio would work best and get good torque/speed performance? i was told 4:11 was a magic number for alot of people. Bottom gear / Top gear = Gear Ratio Example 43/27 = 1. Tire size table. 56\'s gear ratio??? A good friend of mine's first truck was a 1981 K-10 with 2. the higher the gear ratio the faster the retreive the trade off with high speed is less cranking power. Toyota Gear Ration and Tire chart Find the correct gearing for your Toyota Pickup. 9% of the close ratio transmissions, and always recommend the close ratio. 88s if you run around on the highway a lot, 5. Re: What rear gear ratio is good for highway??? To check the ratio, I jack up only 1 rear tire and have a friend spin it 20 times. All cars are different as far as gear ratios go… If I were to change my final rear ratio lets say to 4. A GP 125 gearbox has a high revving gearbox with a top gear ratio of 6. 73's will probably drop feul mileage substantially, and if your 5. The biggest problem IMO is the 48RE ratio between 3rd and OD is way to much, when towing its very annoying. To find out what the final gear ratio is, you must multiply the trans ratio by the rearend ratio. Hi, I am looking at getting a used Chevrolet truck w/ 5. 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. 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. This article also explains why the Dana 30 is a good low buck axle upgrade for '45-'71 CJs. Now coming back to topic , for good street use and drag racing its very imp to get the right balance between the gear ratios. This ratio is fixed and cannot be changed once the box is constructed. I'm running a 6. Need help with reel size and gear ratio. They simply show the ratio span from the lowest ratio to the highest. The gear ratio for go-karts is a measure of the potential performance of the kart. IN A NUTSHELL, a continuously variable transmission, or CVT, doesn’t offer fixed gear ratios like a either a manual gearbox, automatic transmission or a DSG (Direct Sequential Gearbox, a newer.