What do axle ratio numbers mean?
What do axle ratio numbers mean?
Axle ratio is the number of revolutions the output shaft or driveshaft needs to make in order to spin the axle one complete turn. The number is expressed in a ratio, which represents the number of teeth on the ring gear divided by the number of teeth on the pinion.
What’s the axle ratio of a front wheel drive truck?
Front- or rear-wheel-drive trucks tend to include different ratios for the rear and front axle, while all-wheel-drive vehicles typically have similar front and rear axle ratios. Trucks with optional axle ratios sometimes feature a window sticker displaying them.
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
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 many teeth does a 3.73 axle ratio have?
For a 3.73 ratio, there may be 41 teeth on the ring gear and 11 on the pinion for 3.72. The axle gears are a part of the differential, and are located behind the inspection cover on your axle. They run in gear lube, which is some nasty stuff.
What does 3.73 axle / gear ratio mean?
Axle ratios are expressed in numeric values. For the sake of an example a 3.73:1 axle/gear ratio means the drive shaft (or pinion gear at the end of the drive shaft) rotates 3.73 revolutions for each rotation of the rear wheels (or ring gear in the axle).
Which is the best axle ratio for fuel economy?
Fuel Economy Axles: For maximum fuel economy you want an axle ratio that is lower in the number of drive shaft rotations (pinion gear) for every tire rotation (ring gear). Examples of this would be a 3.21:1 and 3.42:1 axle ratio.
What are the axle ratios of a RV?
The reason for this is the lower gear sets (higher value numerically) put more low speed torque, or towing power, at the rear wheels. The results are, less acceleration is required to get the load you are carrying moving from a dead stop, but there is an increase in rpms at highway speeds. Examples of this would be 4.10:1 and 4.30:1 axle ratios.
How can you tell the axle ratio of a Ford truck?
There’s no question, the easiest way to identify the axle and gear ratio in your truck is from the door sticker. If you open the drivers door and look at the door jamb, you’ll see a sticker like the one shown below:
