Table of Contents
How do I know which front 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.
How do you know what gear ratio you have?
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 can I find the axle gear ratio?
To find the axle gear ratio of any GM vehicle, locate the RPO sticker (typically located in the glove box) and write down any codes starting with F, G, or H. Then, find those codes in the table below. NEW! – Need help with GM RPO axle codes?
Can you change the gear ratio on a rear wheel drive car?
When talking about gear ratios, it is important to know that all vehicles have a gear ratio designed into the drivetrain of the vehicle. This ratio cannot be changed on most front wheel drive vehicles, but can be changed on many rear wheel drive vehicles.
How to find out the gear ratio with the VIN number?
While it may be possible to derive information about an auto’s gearbox ratio from its VIN, that depends largely on the information the manufacturer includes in the vehicle descriptor section (VDS) of the VIN. Find the VIN of your vehicle.
How can I tell what gear ratio my Jeep has?
While you may think you know your Jeep’s gear ratios based off its year and/or differential type, if the vehicle was purchased used then someone may have changed them at some point in the past. So an easy way to determine your actual gear ratio is to check the tag attached to the differential cover by the cover bolts.