What gear ratio is a Subaru rear diff?

Rear Differential Gear Ratio of Subaru Vehicles
The gear ratio of the rear differential in Subaru vehicles can vary depending on the specific model and year. The rear differential gear ratio is an important factor in determining the vehicle’s performance characteristics, such as acceleration and fuel efficiency.
Based on the information from the search results, it is evident that the rear differential gear ratio for Subaru vehicles can be different for various models and years. The gear ratio can be expressed as a numerical value, such as 3.90, 4.11, 4.44, etc. This gear ratio is a crucial component in the overall drivetrain system of the vehicle.
Determining the exact gear ratio of the rear differential for a specific Subaru vehicle may require accessing the vehicle’s documentation, consulting with a knowledgeable mechanic, or using specialized tools to inspect the differential directly.
It’s important to note that the gear ratio of the rear differential can have a significant impact on the vehicle’s performance, especially in terms of acceleration and overall driving dynamics.
In summary, the gear ratio of the rear differential in Subaru vehicles can vary depending on the specific model and year, and it is an important factor in determining the vehicle’s performance characteristics.

How can you tell if you have 3.73 gears?

Rotate the tire by hand 2 complete revolutions while counting the drive shaft turns. The number will be your gear ratio. A little less than 3 and 1/4 turns will be 3.21 gears. About 3 and 3/4 turns will be 3.73 gears.

Is a 3.92 gear ratio good?

In short, yes. Which axle ratio you go with will affect your truck’s towing capability, but fuel economy will change too. A higher axle ratio (like the 3.92 we mentioned earlier) will allow for higher towing capability, but it requires higher engine rpm for any given speed and then results in lower fuel economy.

How do I find my differential gear ratio?

Check Differential Cover
On the axle you might have a sticker, and on the differential cover you might have a little metal tag that’s sticking out. That will have the gear ratio stamped right on that.

Can you get gear ratio from VIN number?

Re: using vin to find gear ratio
The VIN number won’t really tell you gear ratio. It’ll tell you the engine, and sometimes only one gear ratio was available with a specific engine, but for 88 the L98 could be had with 2.77 or 3.27 gears.

What gear ratio is a 2006 Subaru STi differential?

The 2006 STi Tranny has a 1.1:1 Center Diff, meaning the front differential final drive is 3.90, and the rear R180 differential final drive is 3.54. This is speculated to have a better mechanical torque bias than the previous 3.90/3.90 setup for the 04-05.

What is a 3.73 gear ratio good for?

To keep it simple, if you want a daily driver and want to save a little on fuel and you care about performance but don’t want screaming RPM, then taller gears like the 3.73 ring and pinion are the way to go.

Should I get 3.73 or 4.10 gears?

There is only a 10% difference between 4.10 and 3.73 gears. Unless you need to tow heavy loads, I would keep the 3.73 gears. Or maybe if you are going to big, big tires. Otherwise you probably won’t notice the difference.

What is the diff ratio for a Subaru?

Subaru used 3.9:1, 4.111:1, 4.444:1 diff ratios and 1:1 and 1.1:1 drop gear ratios, mix them up and you will break something.

What is the gear ratio of a rear differential?

This ratio refers to the number of teeth on the ring – i.e., driven gear – divided by the number of teeth on the pinion – i.e., the drive gear. Therefore, this implies that a ring gear with 41 teeth and a pinion with ten teeth results in 4.10:1.

What gear ratio is a Subaru R180?

The ratios found in the R180s are 4.44 in version 4,5,6 Sti RAs and 3.9, 3.54 in the later GDB chassis STi’s (version 7 on).