What gear ratio do semi trucks use?

What gear ratio do semi trucks use?

Across 40k tandem rear applications, axle ratio choices generally range between 2.26 to 6.50, but Slesinski notes the higher range is generally reserved for vocational lower-speed segments. For on-highway linehaul, the range tightens to a fuel friendly 2.26 through 3.42 for the most common ratios.

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.

Is 3.55 or 3.73 gears better?

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.

Are 3.08 gears good in a truck?

Yes, you are exactly right, towing with a 6 speed with 3.08s is still better than towing with a 4 speed and 3.73s. If its a heavy trailer, you will probably never use 5th and 6th gears, but who cares? crank turns to rotate the rear wheels once that counts.

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 does 3.23 gears mean?

If your number 1 gear ratio is 3.23, it means that for every 1 revolution of the output shaft of your gearbox, the spiggot shaft turns 3.24 times. The spiggot shaft is directly connected to the engine crankshaft in a manual setup so the engine by extension also turns 3.23 times.

Which rear end gear ratio is best for fuel economy?

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.

Can you tow with 3.31 gears?

3.31 and 3.55 are both good ratios for towing anything a SRW is capable of towing. Maybe a good way to compare the two is like this: With the 3.31 ratio the truck will spend a little more time in each gear than a 3.55.

What is a 3.31 axle ratio?

Consider that with a 3.31 axle ratio, the driveshaft turns 3 1/3rd times for every revolution of the rear wheel. With a 4.30 ratio, it turns 4 1/3rd times for every revolution of the rear wheel. The numerically higher gear ratio (in this case, 4.30) increases wheel torque and improves acceleration from low speeds.

What do 4.10 gears do?

The gear ratio is the ratio of how many times your engine has to turn the crankshaft to turn the rear wheels one rotation. This equates to a greater amount of power transferred to the wheels. Installing 4.10 gears improves the car’s performance on the track but with negligible effects to the highway driving.

What kind of rear differential does a 1986 Toyota 4×2 have?

This is from a 1986 Toyota 4X2 truck. The gear code is circled in white and is G662, indicating 3.07 gears and an 8″ diff and 2 pinion open carrier, which is surprising considering that many 4×2 trucks came with 7.5″ rear diffs. But some did come with 8″ diffs.

What are the different types of pickup differential?

Toyota has provided 4 differential types in pickups and 4Runners — the 8″ standard, the 7.5″, the 8″ V6/Turbo, and a new one in the Tacoma and third-generation (96+) 4Runners. The most common is the 8″ standard.

Can I swap my IFS DIFF for a Toyota 8-inch differential?

None of the parts in your 7.5″ IFS diff will swap into a Toyota 8″ differential. If you really need lower gears in your IFS but you’re planning a solid axle swap, troll Craigslist for already swapped 7.5″ 5.29s or look for the stock 4.88 thirds (read below) to save some coin. Can You Install Gears Yourself? The short answer is yes, but read on.

What kind of rear differential does a Toyota Tacoma have?

In this case the diff is of the open type. All U.S. model Toyota pickups were sold with open front and rear differentials, until the Tacoma was introduced in 1995. From 1995 on, some Tacomas and 4Runners were equipped with a rear electric locker.