What gear ratio do I have by Vin?

How to Find Out the Gear Ratio With the VIN Number

What does the 8th digit of a VIN mean?

Vehicle Description Section The fourth through eighth digits describe your vehicle’s model, body type, restraint system, transmission type, and engine code.

So an easy way to determine your actual gear ratio is to check the tag attached to the differential cover by the cover bolts. On the tag there should be some numbering such as 3.54 or 3.73, either of those numbers will give you the stock axle ratio.

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.

What does it mean to have 3.73 gears?

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.

How do you find the gear ratio on a GMC truck?

Identify your GMC or Chevrolet rear end gear ratio by the RPO Codes, usually located on the placard labeled “Service Parts Identification” inside the drivers door panel or glove box.

Can you change the gear ratio on a truck?

You can change the axle ratio, and you can do it rather easily. Quite a few members here have gone from one ratio to the next. People with 3.21 and 3.55s are going up to 3.92 and even sometimes 4.10. A lot of the 4×4 trucks you see here with lifts and larger tires have gone with 4.10 or 4.56.

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.

Is 3.23 a good gear ratio?

3.23 will be better suited to highway cruising and better fuel economy. 3.42 for better acceleration and better towing performance.

What is the best gear ratio for speed?

4.10:1

Are 3 73 gears good?

The 3:73 Gears will give you decent acceleration, lower rpm at any given speed and improved fuel consumption. In general then, a vehicle with a lower final drive ratio will deliver better fuel economy in most driving conditions.

What’s the best gear ratio for highway driving?

If your highway driving includes a lot of mountain terrain then I’d also go to 3.73 but otherwise 3.55 will afford you the best fuel economy. The opinion on the best gears depends on the goal: Off the line ” go to lower gears (3.73, 4.10, etc…) Fuel Mileage -go for higher gears (3.08, 3.31, etc..)

4.11:1 is a “lower” gear ratio, meaning you have more torque, lower top speed, and you will generally consume more fuel. Usually people put 4.11:1 gears in trucks to be used off-road for the extra torque and the better “crawling” capabilities.

What is the difference between 3.42 and 3.73 gears?

3.73 is 9% higher than 3.42. That means your RPMs at any given speed will be 9% higher. You should be able to accelerate about 9% faster, in the lower gears at least. Your maximum speed in each gear will decrease by 9%.

What gear ratio do I need for 31 inch tires?

Gear Ratio And Tire Size Calculator

Is a 3 42 gear ratio good for towing?

Re: Towing weight for a 5.3 with 3:42 gears IMO, yes you can tow that trailer. I pulled an 7K trailer w/ my Sierra w/ 5.3 & 3:42. It may struggle a little going up some hills.

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