How do I know my differential gear ratio?
The calculation uses the number of teeth in the ring gear and divides it by the number of teeth in the pinion gear to provide you with a “[result] to 1” ratio. For example, if the pinion gear has 41 teeth, and the ring gear has 11 teeth, the ratio would be calculated as 41/11, which is equal to 3.73 = 3.73:1.
Where is the gear ratio stamped?
Check the Differential Cover The axle may have a sticker, and on the differential cover, you might have a small metal tag that’s sticking out that will have the gear ratio stamped on it.
How do I identify my Chevy rear end?
All Chevrolet rear ends can be identified by comparing the gasket shape to an identification chart similar to the one found on Drivetrain’s differential identification page (see References). A visual chart of different GM/Chevrolet rear ends is found on Ring & Pinion’s differential types web page (see References).
What rear end do I have by Vin?
Identify the VDS section, the fourth through eighth digits of the VIN. This section typically includes information such as the vehicle model, engine size and body type. While not every vehicle manufacturer includes gearbox ratio information in the VDS, this will be where the information is found if it was included.
How do I know my GM rear end ratio?
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 can I tell what my rear end gear ratio is?
Rotate the tire one complete revolution and count the revolutions that the drive shaft turns. The number of times the driveshaft rotates is the rear end gear ratio. For example, if it turns 3 1/4 turns then the ratio is 3.25 to 1.
How do you find out what your gear ratio is?
Count the number of teeth on the drive gear. One simple way to find the gear ratio between two interlocking gears is to compare the number of teeth (the little peg-like protrusions at the edge of the wheel) that they both have. Start by determining how many teeth are on the drive gear.
How do you calculate rear axle gear ratio?
How to Calculate the Rear Axle Gear Ratio. Crawl under the vehicle and locate the drive shaft where it attaches to the front of the rear axle. Place a 6 to 8 inch length of masking tape longitudinally on the drive shaft where it will be easily visible from the side of the vehicle near one of the rear wheels.
What is the rear differential gear ratio?
The term refers to the gears in the truck’s differential, which is a mechanical device that links the rear axle to the driveshaft and then the engine. Technically, the number should be expressed as a ratio, such as 3.55:1 , meaning the drive shaft turns 3.55 times for each turn of a wheel.