Often asked: How Transmission Gear Ratios Work?

How do you read transmission gear ratios?

The ratio is the number of teeth on the driven gear (ring) divided by the number of teeth on the drive gear (pinion). So, if the ring gear has 37 teeth and the pinion has 9 teeth, the ratio is 4.11:1. That also means that for every one turn of the ring gear, the pinion will turn 4.11 times.

Is it better to have a higher or lower gear ratio?

A lower (taller) gear ratio provides a higher top speed, and a higher (shorter) gear ratio provides faster acceleration.. Besides the gears in the transmission, there is also a gear in the rear differential.

Is 3.55 or 3.73 gears better?

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.

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Is a 4.10 gear ratio good for towing?

FACT: A 4.10 axle ratio is ideal for towing heavy loads in a mix of city and highway driving and when towing on varied or steep grades. A 4.10 axle ratio will provide improved acceleration in stop and go city traffic. A 4.10 rear axle ratio is ideal for towing larger 5th Wheel or Gooseneck trailers.

Are 3.73 or 4.10 gears better?

Use this rule of thumb: The higher the gear ratio, the easier it is to get the vehicle moving and better accelerating, but lowers top speed. WHICH GEAR RATIO IS FOR YOU?

3.73 RATIO 4.10 RATIO
Lower torque Higher torque
Better gas mileage Worse gas mileage
Higher top speed Lower top speed

Does gear ratio affect horsepower?

It doesn’t affect horsepower or tourqe at all. Gears make your rear tires turn faster or slower. It also effects your top end speed and milage. The reseaon you dyno in 4th gear is becouse its a 1-1 ratio.

What is a good gear ratio for highway driving?

With a 3.08:1 rear gear, the effective First gear ratio is equal to a 2.20:1 First gear Muncie four-speed with 4.56:1 rear gear. In the quarter-mile, Fourth gear is equivalent to running a 3.79:1 rear gear. But shift into 1:1 Fifth gear and enjoy the highway cruising rpm of a 3.08:1 rear gear.

What gear ratio is best for fuel economy?

Automakers Offer Variety of Axle Ratios Step one in understanding axle ratios is to know what the numbers signify. The lower the number, the better fuel economy, and the higher the number the more towing power you have, but fuel economy suffers. For instance, a 3:31 gets better fuel economy than a 3:73.

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How do I choose a 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.

Are 3.73 gears good for highway?

Well, if you plan on doing a lot of freeway driving, you don’t want to choose a gear that’s too low for your car because you’ll be going down the freeway at too high of an RPM. Shorter gears (higher numbers) are much better suited for accelerating, such as 3.55, 3.73, 3.91’s, 4.11’s etc.

What are 3.73 gears 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.

Are 3.73 gears good for racing?

3.73 s on most cars will just help you have more traction problems launching, 3.42s are good enough down low, yet still good up top.

Are 3.73 gears good for 35 tires?

You will be fine. Just gonna lose mpg and slow your truck down. I have run 35s with 3.73 s and no issues at all.

What gear ratio do I need for 35 inch tires?

Gear Ratio And Tire Size Calculator

3.31 5.71
34″ 2126 3668
35 “ 2065 3563
36″ 2008 3464
37″ 1954 3370
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How much can a 5.3 L V8 tow?

Towing & Payload Capacities

Engine Towing & Payload Specs
5.3L EcoTec3 V8 with Dynamic Fuel Management 11,500 lbs. max. towing capacity 2,420 lbs. max. payload capacity
5.3L EcoTec3 V8 with Active Fuel Management™ 12,100 lbs. max. towing capacity 2,420 lbs. max. payload capacity

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