3.55 gears will give you better gas mileage while 3.73 gears give you better acceleration and performance. The numbers you are using are common Final Drive Axle Ratios for vehicles, so the question will be answered in that context.
Is 3.55 or 3.73 gears better?
PERFORMANCE: The larger the axle ratio number, the quicker the truck will accelerate. For example, a truck equipped with 3.55:1 axle gearing will accelerate faster than one equipped with a 3.31 axle ratio. Similarly, a pickup with a 3.73 axle ratio will be faster than one with 3.55s.
What is a 3.55 axle ratio good for?
Performance: Looking again at the ratios used above, the higher 3.55 ratio indicates faster acceleration whether the truck’s empty or loaded. The higher the ratio, the more revolutions per minute. Towing: For pickup trucks released after 2010, the best axle ratio for towing falls somewhere between 3.55 and 3.73.
Is 3.55 a good street gear?
3.55 is great for stock power levels. A 400 hp 351 is nearly double stock power. If its a street car I’d say 3.27 or 3.08 if you plan a lot of long trips and really want to cruise.
Are 3.55 gears good for towing?
Normally, the 3.31 would get you better gas mileage, on highway. But, with the 3.55 you will get a bit more pulling power so less time at higher RPM to get your trailer moving and when going uphill. If most of your towing is flat highway, the 3.31 should do you fine.
What’s the difference between 3.15 and 3.55 gears?
The 3.55 will make the gears seem shorter meaning you will shift more often. The trade off is faster acceleration for less gas mileage with the 3.55’s and vise versa with the 3.15’s.
What is the difference between 3.55 and 3.92 gears?
3.92 is about 10% lower than the 3.55 with the same size tire. With the same rearend ratio the standard 17″ wheels and tires are effectively about 6% lower geared than the 20″. So you can get about halfway between the two ratios depending upon what you choose for wheel and tire size.
What is a 3.55 rear axle?
The term refers to the gears in the truck’s differential, which is a mechanical device that links the rear axle to the driveshaft and then the engine. Technically, the number should be expressed as a ratio, such as 3.55:1, meaning the drive shaft turns 3.55 times for each turn of a wheel.
What is the best gear ratio for speed?
In the real world, typical street machines with aspirations for good dragstrip performance generally run quickest with 4.10:1 gears. Lower gears are required if the car is very heavy, or if the engine makes its power at the upper end of the rpm scale.
What gears are best for racing?
If it’s a daily driver, chances are you’ll want to keep your gear ratio at 3.23 or below for optimal performance and lower cruising RPMs. For street and strip applications, a popular choice ranges between 3.42s and 3.90s, giving you that extra oomph on the track while maintaining a tolerable cruising RPM on the street.
What gear ratio is best for street and strip?
If we have a daily driver, 2.55 to 3.25 gear ratios typically work best, whereas a street/strip application we would usually use a 3.42 to a 3.90 gear ratio, and race applications most commonly use a 4.10 and above gear ratios.
How much can a 3.55 axle tow?
2021 Ford F-150Max Towing Capacity of the EcoBoost Engines
| EcoBoost Engine | Max. Towing Capacity | Max. Towing Configurations |
|---|---|---|
| 3.5L EcoBoost V6 | Best in class 14,000 lbs.** | 4×2 SuperCab/8-ft. box/3.55 and 3.73 axle ratios 4×2/SuperCrew/5.5-ft. box/3.55 axle ratio 4×2/SuperCrew/6.5-ft. box/ 3.55 and 3.73 axle ratios |
What is a good gear ratio for highway driving?
Is 3.73 a good gear ratio? FACT: A 3.73 axle ratio is ideal for towing heavy loads on flat terrain and will produce increased fuel economy during steady-state, long-distance highway driving.
Is it better to have a higher or lower gear ratio?
Gear ratios can be boiled down to a single statement: Higher ratios (with a lower numerical value) give better torque/acceleration and lower ratios allow for higher top speeds and better fuel economy. Higher ratios mean the engine has to run faster to achieve a given speed.
What gear ratio does a 2019 Mustang GT have?
Member. Hollywood_85374 said: 3.15 is standard, 3.55 is optional with the 10 speed auto on a non PP car.
What gears does a 2018 Mustang GT have?
Testing (and computing) to determine a definitive drag-race winner
| 2018 Ford Mustang GT (6M) | 2018 Ford Mustang GT (10A) | |
|---|---|---|
| REDLINE | 7,400 rpm | 7,400 rpm |
| WEIGHT TO POWER | 8.4 lb/hp | 8.4 lb/hp |
| TRANSMISSION | 6-speed manual | 10-speed automatic |
| AXLE/FINAL-DRIVE RATIO | 3.73:1/2.32:1 | 3.55:1/2.26:1 |
What does final drive ratio mean?
Final Drive Ratio refers to the last set of gears that connect a vehicle’s engine to the driving axle. The ratio is the number used to represent how many times the transmission needs to rotate the drive shaft in order to rotate the tires once.
Does gear ratio affect horsepower?
Does gear ratio affect horsepower? – Quora. It does not affect the engine / motor brake horsepower, but it can definitely effect the power levels at the wheels which propel the vehicle. No. That is the prime reason that horsepower is used to compare engines.
What is the best gear ratio for gas mileage?
Best MPG ratio
If getting the best fuel economy is priority, then choose the lowest numerical number offered, such as 3.08, 3.23 or 3.31. This applies to highway driving; city driving mpg isn’t really affected by the axle ratio. If you do a mix of both, go with the “standard” axle ratio offered by the manufacturer.
What rear axle ratio is best for fuel economy?
The most popular rear-end ratio in trucks today is the 3:55, which sort of averages towing power and fuel economy. This is a good ratio for the occasional towing or hauling individual. For a person who tows more often, and heavier loads, the 3:73 or 4:10 may be more appropriate.
What is 3.55 ratio limited slip axle?
The numbers 3.55 and 3.73 refer to Ford truck axle ratios. The axle ratio tells you the number of revolutions the drive shaft makes compared to the rear axle. For a 3.55 axle ratio, the drive shaft will turn 3.55 times for every one revolution of the tire.
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