Quick Answer: Can You Have Different Gear Ratios Front And Rear?

What is the difference between 3.73 and 4.10 gear ratio?

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.

Vice versa, if the gear ratio is lower it has worse acceleration but a higher top speed….WHICH GEAR RATIO IS FOR YOU?3.73 RATIO4.10 RATIOHigher top speedLower top speed3 more rows•May 12, 2020.

How much does a differential cost?

Rear Differential Replacement Cost Even buying a high-quality used component that still has a solid warranty will cost between $1,500 and $2,000 once you have it installed. If you prefer a new rear differential, expect to pay closer to $3,000 to $4,000.

What gear ratio do I have by Vin?

Check the bolts on the differentials. There should be a tag on one of them. The codes on that tag will tell you the gear ratio. The VIN will not give you gear ratios in most cases.

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.

Does gear ratio affect horsepower?

Motor HP does not change when you change gear ratios. The only thing that changes is torque. A dynamometer measures torque and RPM, and from those two values calculates horsepower. When you change gear ratios both RPM and torque will change but horsepower will not.

Is 3.42 or 3.73 better?

The difference in towing mpg between the 3.42 and 3.73 gears at highway cruise speed, under the same conditions, should be less than 1 mpg because of the slightly higher rpm running 3.73s. Vehicle speed actually plays a bigger role in fuel economy than engine rpm.

Are 3.73 gears good for highway?

Rear end gears (2.79’s, 3.00’s, 3.25’s, etc) are great for freeway driving, bit not good for 0-60 MPH or accelerating from a dead stop. Shorter gears (higher numbers) are much better suited for accelerating, such as 3.55, 3.73, 3.91’s, 4.11’s etc. Always remember, for very “give” there is a “take”.

How do I identify my GM front differential?

Information about Differentials in GM vehicles can usually be obtained by looking at the RPO or “Regular Production Option” codes contained in the Service Parts Identification tag in the glovebox. Whenever possible, reference the tag numbers when ordering parts for your Differential.

What gear ratio is best for speed?

If you prefer top speed to dragstrip performance, then higher axle gears, like 2.76:1 or 3.08:1, may be called for. The higher gears will reduce engine rpm versus road speed. Another way to look at it is that the car will go faster at the engine’s rpm limit than it would with lower gears.

Is 3.23 a good gear ratio?

The engineers likely chose the numerically low gear ratio for fuel economy reasons. … A later swap to a four-speed and 3.23 rear gears woke up the performance of the car considerably. Yes, highway rpm increased as well, but I rationalized it by deciding that 3.23 gears provided a good balance of performance and economy.

Are front and rear differentials the same?

The differential gives the wheels of your car or truck the capability to turn at different rates. … In front wheel drive vehicles the differential is in the front and called a transaxle. In rear-wheel drive vehicles, the differential is in the back. Four wheel drive vehicles have differentials in both the front and back.

What type of fluid goes in the rear differential?

Every front or rear axle is filled with a special oil (also called differential fluid, or gear oil) that takes care of this. The differential fluid lubricates the gears, bearings and other internal parts, and provides cooling to these components as well.

Do front and rear gears have to match?

Final drive ratios must be the same. A diff doesn’t have a ratio and is always the same, ie, One wheel stopped, the other side twice the speed. All diffs are the same. Any difference in final drive ratios front to rear will cause failure unless a centre diff is running the DIFFERENCE of speeds.

How do I know what gear ratio my front differential is?

Pull off the diff cover and count the ring gear teeth and the pinion gear teeth, then divide the pinion gear into the ring gear. That will give you the exact ratio.

How much does it cost to change front and rear differential fluid?

When changing the differential fluid, the overall differential fluid change cost averages between $80-$150 for the rear and $70 to $130 for the front change, coming in at a total price of between $150-$280 for the differential fluid change cost.

Does higher gear ratio mean faster?

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.

How can I tell what gear ratio I have without pulling cover?

With the transmission in neutral, rotate the rear driveshaft by hand. Count the number of driveshaft revolutions required for one revolution of the tire. If the driveshaft turns approximately 3-1/2 times, you have a 3.54 ratio, etc.

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. … Switching from a gear set of 3.55 or 3.73 to 4.10 gears will affect your gas mileage slightly as your engine will be turning more times to rotate the rear wheels once.