How is rear axle ratio determined?
Determining a Rear Axle Ratio of a Non-Posi Rear 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.
How to calculate the rear axle gear ratio?
by Skip Shelton. A vehicle’s rear axle ratio is numerically expressed. A higher number denotes a lower ratio. For example, if the axle ratios were listed as 3.31:1 and 3.42:1 and 3.55:1 and 4.10:1, the lowest ratio of the four gears is 4.10:1. The lower the gear ratio, the more rpm required to maintain a given speed with equivalent tire sizes.
How is rear axle ratio related to gas mpg?
Rear Axle Differential Ratio Comparisons for Gas MPG. A vehicle’s rear axle ratio is numerically expressed. A higher number denotes a lower ratio. For example, if the axle ratios were listed as 3.31:1 and 3.42:1 and 3.55:1 and 4.10:1, the lowest ratio of the four gears is 4.10:1.
What does an axle ratio of 3.73 mean?
For example, a truck with a 3.73:1 gear ratio means that the driveshaft will turn 3.73 times for each complete wheel spin. Many people simply refer to the axle ratio as 3.73 rather than express it as the ratio 3.73:1. However, they both mean the same thing.
What’s the axle ratio on a GM transaxle?
GM RPO Codes – Factory Identification Labels and Interpretation RPO Code Description Ratio G11 Transaxle Final Drive 2.56 G44 Axle Rear 3.07 G72 Axle Rear 2.14 G75 Axle Rear 3.62
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 you determine axle 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.
What is difference in rear axle ratio?
A vehicle’s rear axle ratio is numerically expressed. A higher number denotes a lower ratio. For example, if the axle ratios were listed as 3.31:1 and 3.42:1 and 3.55:1 and 4.10:1, the lowest ratio of the four gears is 4.10:1. The lower the gear ratio, the more rpm required to maintain a given speed with equivalent tire sizes.
How do you calculate rear end ratio?
Step 1 How to Calculate Your Rear End Ratio. Here is the formula to calculate rear end ratio: =(60*RPM)/(Tire Size*Xmission Final Ratio*Road Speed) Here’s what you need to know: Your Tire size in a number represented as “revolutions per mile”.