How do I figure out my rear axle ratio?
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 3.55 axle ratio mean?
The numbers 3.55 and 3.73 refer to Ford truck axle ratios. The axle ratio tells you the number of revolutions the drive shaft makes compared to the rear axle. For a 3.55 axle ratio, the drive shaft will turn 3.55 times for every one revolution of the tire.
How do I find out the gear ratio in my Ford truck?
Match the code on the label to the corresponding rear axle ratio. The code “15” means your truck is equipped with a 3.15 axle ratio; “27” refers to a 3.31 ratio; “19” to a 3.55 ratio; and “26” to a 3.73 rear axle ratio.
What is your rear axle ratio?
How to Calculate the Rear Axle Gear Ratio Slide a floor jack under the rear of the vehicle and raise it until the rear wheels are off the ground. Crawl under the vehicle and locate the drive shaft where it attaches to the front of the rear axle. Place a piece of masking tape on the edge of one of the rear tires.
What is the explanation for the rear axle ratio?
Rear axle ratio is the overall number of revolutions the driveshaft or output shaft makes to spin the axle one complete rotation. It refers to the number of gears in a truck’s differential, the machine that links the driveshaft to the rear axle and then to the engine.
How do I find out the axle ratio?
How to Calculate Axle Ratio. In order to calculate axle ratio, you would count the number of teeth on the ring gear as well as the number of teeth on the pinion. Divide the number of teeth on the ring gear by the number of teeth on the pinion in order to determine the axle ratio of a truck.
How do I determine my axle gear ratio?
When attempting to find the axle ratio of an unknown gear set-up, it is possible to count the teeth on both the ring and pinion gears and divide the number of teeth on the ring gear by the number of teeth on the pinion gear. The result is the final gear ratio of the axle.