Quick Answer: What Gear Ratio Do I Have By Vin?

How do I know what gear ratio I have?

Modifying the gear ratio is the equivalent of modifying the torque that is applied.

The gear ratio is calculated by dividing the output speed by the input speed (i= Ws/ We) or by dividing the number of teeth of the driving gear by the number of teeth of the driven gear (i= Ze/ Zs)..

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.

How do you decode a message?

To decode a message, you do the process in reverse. Look at the first letter in the coded message. Find it in the bottom row of your code sheet, then find the letter it corresponds to in the top row of your code sheet and write it above the encoded letter. This can be confusing at first!

How do I find out what axle ratio My truck has?

To find a truck’s axle ratio, check the exterior of the differential — that is, the device attached to the axle that lets the wheels turn at different speeds — to see if it has a sticker displaying the ratio.

How do I know what rear end I have?

Casting codes can also be used to identify the manufacture date.Count the number of inspection cover bolts on the rear end housing. … Identify the most common GM rear-end types. … Look at the shape of the inspection cover and the gasket. … Locate the GM manufactured rear-end casting date on the housing.

Does VIN number tell gear ratio?

The vehicle identification number (VIN) is a 17-digit code that is used to identify and track every automobile produced. … The codes on that tag will tell you the gear ratio. The VIN will not give you gear ratios in most cases.

How do you decode a VIN number?

How to decode a VIN?Digits 1 through 3 combined is the WMI, (World Manufacturer Identifier).Digits 4 through 8 represent the vehicle descriptor section.Digit 9 is a check digit.Digits 10 through 17 is the Vehicle Identifier Section.The 11th digit is the manufacturer’s plant code.More items…•

How do you read a Chevy VIN number?

The first digit is the number 1, which stands for the General Motors division that made the vehicle: Chevrolet. Look for the sixth digit, which stands for the model year. On a 1969 Chevy Nova, this digit should be 9. (On a 1965 Nova, the sixth VIN digit would be a 5; on a 1966 Nova, it would be a 6; etc.)

How do I find out my engine code?

Find it in the lower corner of your windshield on the driver’s side. Your VIN number is your vehicle identification number and you can find your engine size by VIN number. In the series of numbers and letters, the tenth from the left denotes the model year and the eighth is the engine codes.

What do the first 3 digits of a VIN mean?

The first three digits of the VIN make up the World Manufacturer Identifier (WMI) number. However, if an automaker builds fewer than 500 vehicles per year, 9 will be the third digit and positions 12-14 (part of the production number) will make up the second part of the manufacturer’s WMI.

What gear ratio do I need for 33 inch tires?

So if our truck had 30-inch tires stock, and a 3.73:1 axle ratio, that calculation would tell us we need a 4.103:1 (which rounds off to the readily available 4.10:1) gear ratio to get us back to stock with 33-inch tires.

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

Turn the wheel TWO revolutions and count the number of driveshaft turns. The number of driveshaft rotations will help you determine your rear axle ratio. For example, if it turned 3 and a half times, it’s a 3.50:1 ratio. If it turned 4 and a quarter times, it’s a 4.25:1 ratio.

What does the 8th digit in a VIN number mean?

Digits in position 4 through 9 make up the Vehicle Description Section (VDS). The fourth through eighth digits describe your vehicle’s model, body type, restraint system, transmission type, and engine code. The ninth digit is the check digit, which is used to detect fraudulent VINs.

What does a VIN code mean?

vehicle identification numbernumber (VIN)? The car’s vehicle identification number (VIN) is the identifying code for a SPECIFIC automobile. The VIN serves as the car’s fingerprint, as no two vehicles in operation have the same VIN. A VIN is composed of 17 characters (digits and capital letters) that act as a unique identifier for the vehicle.

Where is the gear ratio stamped?

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.

Which digit of VIN is country?

First digit is the country; 1, 4 or 5 = USA; 2 = Canada, 3 = Mexico, J = Japan, W = Germany. Tenth digit is the model year and is sequential; A = 1980 or 2010, B = 1981 or 2011, 1 = 2001, 2 = 2002.

How do I tell what gear ratio my Chevy truck has?

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.

How do I know what Differential I have?

Without an ID tag, differentials are identified by the number of cover bolts, the distinctive shape of the cover, the number of ring gear bolts, and ring gear diameter. They can also be identified by whether the center section is an integral or dropout design.