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What is the difference between 3.73 and 4.10 gear ratio?

The gear ratio of a vehicle's differential is a crucial factor that affects its performance and fuel efficiency. The difference between a 3.73 and a 4.10 gear ratio can have significant implications for how a vehicle behaves on the road. In this article, we'll explore the key distinctions between these two gear ratios and how they impact a vehicle's driving characteristics.


What is Gear Ratio?


Gear ratio refers to the relationship between the number of teeth on the ring gear and the number of teeth on the pinion gear in a vehicle's differential. This ratio determines how many times the driveshaft must rotate for the wheels to make one complete revolution. A higher gear ratio, such as 4.10, means the wheels will rotate more times for each rotation of the driveshaft, providing more torque and acceleration but lower top-end speed. Conversely, a lower gear ratio, like 3.73, results in fewer wheel rotations per driveshaft rotation, sacrificing some low-end torque for higher top-end speed.


Comparing 3.73 and 4.10 Gear Ratios


The primary differences between a 3.73 and a 4.10 gear ratio are as follows:



  • Acceleration and Torque: The 4.10 gear ratio provides more low-end torque and acceleration, making the vehicle feel more responsive off the line and during passing maneuvers. The 3.73 ratio, on the other hand, sacrifices some of this low-end power for higher top-end speed.

  • Top Speed: Vehicles with a 3.73 gear ratio will generally achieve a higher top speed compared to those with a 4.10 ratio, as the lower gear ratio allows the engine to reach higher RPMs before the vehicle reaches its maximum velocity.

  • Fuel Efficiency: The 3.73 gear ratio is typically more fuel-efficient than the 4.10 ratio, as the engine operates at lower RPMs at a given speed, reducing fuel consumption.


The choice between a 3.73 or 4.10 gear ratio ultimately depends on the intended use of the vehicle. If you prioritize acceleration and low-end power, the 4.10 ratio may be the better option. However, if you value top-end speed and fuel efficiency, the 3.73 ratio may be the more suitable choice.

Kevin's Auto

Kevin Bennett

Company Owner

Kevin Bennet is the founder and owner of Kevin's Autos, a leading automotive service provider in Australia. With a deep commitment to customer satisfaction and years of industry expertise, Kevin uses his blog to answer the most common questions posed by his customers. From maintenance tips to troubleshooting advice, Kevin's articles are designed to empower drivers with the knowledge they need to keep their vehicles running smoothly and safely.