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.

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 is a good rear end gear ratio?

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.

Is 2.47 a good gear ratio?

For fuel efficiency, a low numeric drive axle ratio (2.24:1) gives you a low engine rpm (where all the torque lives) at cruise speed, thus reducing fuel consumption. A higher numeric axle ratio (4.11:1) keeps the engine running in the higher horsepower range, thus improving performance.

What are 3.55 gears good for?

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.

Are 3.73 or 4.10 gears better?

4.10 gear ratio:

4.10 is the typical gear ratio for a high-performance vehicle like a sports car or SUV because it provides better acceleration than 3.73 because of the faster second and third gears, which provide more torque at lower speeds to accelerate from a stop.

Is a 3.92 rear axle ratio good?

But opt for the higher 3.92 axle ratio and that same truck packs a higher towing capacity of 9,930 pounds. The extra towing capacity comes about because the increased engine spinning helps improve off-the-line acceleration and pulling power when carrying heavy loads.

How do I choose the right gear ratio?

TRACK-OUT GEARING

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.

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.

Is 3.55 or 3.73 gears better?

End of dialog window. 3.55 will give you a little better gas mileage on the highway and slightly more highway oriented performance. 3.73 may be better for towing, lower end power (off the line acceleration), and may result in worse gas mileage on the highway.

What is a 3.73 gear ratio good for?

A numerically higher axle ratio provides a mechanical advantage to send more of the engine's available torque to the rear tires (and front tires, in a four-wheel drive vehicle), but you pay the price at the fuel pump. So, a truck with optional 3.73 gears will tow a heavier trailer than one with 3.55 or 3.21.

What is a 3.55 axle ratio?

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.

What are 3.92 gears good for?

4) 3.92 has 3 unique lower gears for towing. 5) Speed range that 3.21 is better at towing: 31-38 MPH, 48-57 MPH. 6) Speed range that 3.92 is better at towing: 0-30 MPH, 39-47MPH, 58-70 MPH.

How fast can you go with 4.11 gears?

The Covair engine in good shape should be able to run continuously up to 4,000 RPM. With a 4.11 and a 7.00X13 tire that is about 69 MPH based on some rough calculations, or O.K. for freeway driving, but the engine will sound busy.

What gear ratio is best for acceleration?

Shorter gears (higher numbers) are much better suited for accelerating, such as 3.55, 3.73, 3.91's, 4.11's etc.

Is a 3.31 axle ratio good?

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 rear end gears should I use?

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.

How do I know my rear gear ratio?

Turn the wheel TWO revolutions and count the number of driveshaft turns. The number of driveshaft rotations will help you determine your rear axle ratio. For example, if it turned 3 and a half times, it's a 3.50:1 ratio. If it turned 4 and a quarter times, it's a 4.25:1 ratio.

Is 3.92 good for towing?

4) 3.92 has 3 unique lower gears for towing. 5) Speed range that 3.21 is better at towing: 31-38 MPH, 48-57 MPH. 6) Speed range that 3.92 is better at towing: 0-30 MPH, 39-47MPH, 58-70 MPH.

Which is better 3.21 or 3.92 axle ratio?

There's a reason the 3.92 is an at-cost option. It's the most preferable ratio. Having said that, if MPG is your primary objective, the 3.21 is the way go to with the diesel. On a gas engine, the RPM range is so great that gear ratio doesn't make a lot of difference in efficiency.

What does 3.21 gear ratio mean?

The numbers relate to the number of times the driveshaft has to rotate to make the driven wheels make a full rotation. It's written out with the driveshaft rotation first and then the wheel rotation, the latter of which is always 1. So, for example, you could see a truck's axle ratio expressed as 3.21:1 or just 3.21.

What are 4.11 gears good for?

If you go to a 4.11 you will increase your RPM at any given speed. Nice if you need more power at highway driving, climbing hills, restarting at stoplights etc.. 4.11's make your truck "feel" like you have more HP from stoplight to stoplight and pulling hills.

WHAT WILL 4.10 gears do?

Lower 4.10:1 gears would make the engine turn 4.10 times for each turn of the tire, so lower gears cause higher engine rpm at any road speed. If you continue to visualize the example of removing lug nuts with the long or short wrench, it will help you understand how to gear your car for quarter-mile acceleration.