How do I know my axle ratio Ram 1500?

Start the truck and put it into neutral. Rotate the rear tire 2 times and count the number of times the drive shaft turns. Close to 4 times = 3.92. Close to 3 1/2 = 3.55 Close to 3 = 3.21.

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 gear ratio my RAM has?

Rotate the tire while counting the number of teeth in the large ring gear. Do the same for the small pinion gear in the front of the ring gear. Divide the smaller number into the larger number. This is the gear ratio.

Where can I find the axle gear ratio?

GM RPO Axle Codes. 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.

How to calculate the gear ratio of a Chevy C / K 1500?

If so you can get somewhat of a idea by jacking it up and blocking it then turning both the rear wheels the same direction at the same time watch the driveline rotations and count how many it takes to make 1 tire revolution, it may take a couple of tries to get it, sometimes another person can help but do it slowly and carefully count.

What kind of axle gear does a GM RPO have?

GM RPO Axle Code Notes RPO Axle Type G81 Positraction (Rear) G86 Limited Slip (Rear) G87 8.5″ Ring Gear G89 7.5″ Ring Gear

What is the Axle code for a GMC?

GM RPO Axle Code List (F) The following is a complete list of GM RPO axle codes for Chevy and GMC vehicles starting with the letter F. RPO. Axle Type. Ratio. F16. Transaxle. 2.53. F17.

What is the rear axle ratio in trucks?

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.

Why do you need an optional axle ratio?

In contrast, optional axle ratios tend to provide more towing capability by increasing the amount of available torque delivered to the axles. If you are constantly towing, the highest axle gear ratio possible is what you’re after.

What is the RPO code for a rear axle?

GM RPO Axle Code List (H) RPO Axle Type Ratio H01 Rear Axle 3.07 H04 Rear Axle 4.11 H05 Rear Axle 3.73 H12 Rear Axle (Eaton 21065S) —

Where do I find my rear end ratio?

The table below will help you determine what rear end ratio you have by using your RPO code, answering the question: What rear end ratio was in my Chevrolet or GMC vehicle when it left the factory. You can typically find your RPO code on driver side door panel or glove box.