How does the axle ratio affect fuel economy?
How does the axle ratio affect fuel economy?
Additionally, the fuel economy gains or losses from an axle ratio change may be directly offset by the transmission selected. The transmission gearing directly affects the fuel economy at a given speed. The engine’s rpm and fuel consumption are generally lower in higher gears.
What should the axle ratio be for a fifth wheel?
If you plan on towing a fifth-wheel trailer or anything heavier than 5,000 pounds, you should consider a 4.1 axle ratio. A 4.1 ratio allows a towing vehicle to start moving without as much throttle.
How does a higher rear end differential affect fuel economy?
Power Gain & Fuel Economy. Installing higher rear end gear numbers will not technically increase your horsepower. In fact it will slightly decrease your horsepower and torque on a dyno test.
Which is better 3.73 or 3.21 axle ratio?
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.
Additionally, the fuel economy gains or losses from an axle ratio change may be directly offset by the transmission selected. The transmission gearing directly affects the fuel economy at a given speed. The engine’s rpm and fuel consumption are generally lower in higher gears.
If you plan on towing a fifth-wheel trailer or anything heavier than 5,000 pounds, you should consider a 4.1 axle ratio. A 4.1 ratio allows a towing vehicle to start moving without as much throttle.
Power Gain & Fuel Economy. Installing higher rear end gear numbers will not technically increase your horsepower. In fact it will slightly decrease your horsepower and torque on a dyno test.
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.
