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.
Furthermore, what is the best axle ratio for a Ford F-150? Axle Ratio When choosing your F-150, knowing that a 3.73 ratio provides much more towing power than a 3.55 or 3.31 ratio is crucial to achieving the capability you desire. Basically, the higher the ratio is, the more power you will get from your engine. Conversely, a higher ratio will lower a truck’s fuel efficiency.
Likewise, what rear differential does my F150 have?
- Locate the Safety Compliance Certification Label on the driver’s side front or rear door panel.
- Find the word AXLE under the bar code.
- Find the two-digit code under AXLE.
Amazingly, what F150 to avoid? Amongst Ford enthusiasts, there is one year that people know to avoid with the F-150 and that is the 2004 model year. These are considered to be the worst F-150 trucks that were ever made for a few different reasons. The biggest reason that the trucks from 2004 are considered bad is due to engine failures.
Also the question is, which is better 3.31 or 3.55 axle ratio? 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 does 3.55 mean?
Understanding Axle Ratios 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. But that gear ratio would most commonly be referred to as “3.55” or simply “three fifty-five.”
Are 4.10 gears good for highway?
Installing 4.10 gears improves the car’s performance on the track but with negligible effects to the highway driving. If your car is equipped with an overdrive, you may not even notice a difference in gas mileage with the new higher gearing.
What are 3.55 gears good for?
With a 3.55 being a higher numerical number, Garrison says it will put more torque to the tire, allowing for faster acceleration and better performance on hill climbs. However, the tradeoff is burning more fuel through a higher engine speed.
Does F150 have limited slip differential?
Ford F150 Limited Slip A Limited-Slip Differential works much the same as an open diff; it is intended to keep the wheels moving equally at different vehicle speeds. But the variance arrives during low traction situations.
How do I know if I have 8.8 or 9.75 rear end?
On the passenger’s side upper and lower corners, there’s two semi-circular divots that can easily be seen when looking at the cover from straight on. While the Super 8.8’s cover has a bulge for the ring gear, it’s not anywhere near as pronounced as the 9.75’s.
How do I know if my F150 has locking differential?
What year F-150 stay away from?
There were a great many wonderful and reliable trucks and engines in this period, but one to avoid is the 2004 F-150, which is known for having one of the worst engines in the history of automobiles.
What year is the best F-150 to buy?
The best Ford F150s years are 1993, 1994, 1996, 2009, 2012, 2003, 2001, 2014, 2018, and 1998. While the worst F150 years are based on total complaints received by the National Highway and Traffic Safety Administration, which are 2004, 2005, 2006, 2013, 2015, 2016, 2011, 2007, 2002, and 2010.
Which engine is better 5.0 or 3.5 EcoBoost?
The 3.5L EcoBoost is a better engine all around compared to the 5.0 Coyote. It has the advantage in torque, tuning potential, fuel economy, and towing capacity. We believe the power-band and lower-end torque also make it a better daily driver. The two engines also come very close in terms of reliability.
Are 3.55 gears good for highway?
Rear end gears (2.79’s, 3.00’s, 3.25’s, etc) are great for freeway driving, bit not good for 0-60 MPH or accelerating from a dead stop. Shorter gears (higher numbers) are much better suited for accelerating, such as 3.55, 3.73, 3.91’s, 4.11’s etc. Always remember, for very “give” there is a “take”.
Which rear end gear ratio is best?
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 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 does 444 mean?
444 is a sign that one should keep faith and that the angels are watching over one. They have taken it on themselves to guide one to a brighter future. If one sees this number, especially if it recurs, it is an indication that one should give up all doubts on issues related to ambitions and act decisively.
What diff ratio do I need?
To restore performance you must change the gear ratio to compensate for the change in tire size. If you originally had 3.07 gears you need a ratio that is approximately 17% lower, such as 3.55. If you want to increase off road performance you might want a 4.10 or lower ratio.
How do I choose the right gear ratio?
The conventional procedure for selecting gear ratios is to pick ratios that run the engine rpm to redline at the end of the medium and longest straights, and pick the lower gear ratios to minimize the rev drop at each shift. This method minimizes the number of shifts per lap.
How much does it cost to Regear your truck?
If you are looking to regear and can find an affordable shop, you could complete the whole project for around $1,500 or less. What is this? To break down the costs, you can expect a gear overhaul kit to cost anywhere from $600 to $1,200.
What gear ratio is the fastest?
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 do diff ratios mean?
Differential Gear Ratio determines the number of times the drive shaft (or pinion) will rotate for each turn of the wheels (or ring gear). So if you have a 3.73:1 gear ratio the drive shaft turns 3.73 times for every turn of the wheel. Changing tire size affects the final drive ratio.
What is a good street strip gear ratio?
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.
What gear ratio is best for drag 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.