Dana 30 Gears
Dana 30 gears are the internal gearing parts of a Dana 30 differential.
They consist of a meshing ring and pinion gear and a secondary unit of side and spider gears.
Although, technically, there are many gears inside of a Dana 30 axle (six to be exact), when one refers to Dana 30 gears, they are referencing the ring and pinion gears -- not side and spider gears.
Dana 30 gears come in numerous ratios ranging from 2.
72 to 5.
38 on standard rotation axles and 2.
73 to 4.
56 on reverse rotation axles.
These numbers indicate the number of rotations the pinion gear must make to turn the ring gear exactly one rotation.
This is calculated by taking the number of teeth on the ring gear and dividing by the number of teeth on the pinion gear.
For example, consider the popular Dana 30 gear ratio of 4.
10.
Just by looking at this number (we don't have to do any calculations), we know that the pinion gear must rotate 4.
10 times to rotate the ring gear exactly one time.
In a Dana 30 4.
10 gear ratio, there will be 41 teeth on the ring gear and 10 teeth on the pinion gear.
41 divided by 10 equals 4.
10 (41/10=4.
10) and thus you have a 4.
10 ratio.
In "gear talk" you would say that you have a "Dana 30 with four-ten gears".
Dana 30 gears come in a variety of ratios and knowing your vehicle's needs will help you get the most when choosing a gear set.
It's important to understand that numerically higher ratios mean your engine must run at higher RPMs to rotate the wheels.
The same logic can be applied to numerically lower ratios in that they let your engine run at lower RPMs to rotate the wheels.
With that knowledge you'll be able to choose a Dana 30 gear ratio best suited for your driving preferences whether they be for long-distance highway driving or ultra-slow, off-road rock climbing.
They consist of a meshing ring and pinion gear and a secondary unit of side and spider gears.
Although, technically, there are many gears inside of a Dana 30 axle (six to be exact), when one refers to Dana 30 gears, they are referencing the ring and pinion gears -- not side and spider gears.
Dana 30 gears come in numerous ratios ranging from 2.
72 to 5.
38 on standard rotation axles and 2.
73 to 4.
56 on reverse rotation axles.
These numbers indicate the number of rotations the pinion gear must make to turn the ring gear exactly one rotation.
This is calculated by taking the number of teeth on the ring gear and dividing by the number of teeth on the pinion gear.
For example, consider the popular Dana 30 gear ratio of 4.
10.
Just by looking at this number (we don't have to do any calculations), we know that the pinion gear must rotate 4.
10 times to rotate the ring gear exactly one time.
In a Dana 30 4.
10 gear ratio, there will be 41 teeth on the ring gear and 10 teeth on the pinion gear.
41 divided by 10 equals 4.
10 (41/10=4.
10) and thus you have a 4.
10 ratio.
In "gear talk" you would say that you have a "Dana 30 with four-ten gears".
Dana 30 gears come in a variety of ratios and knowing your vehicle's needs will help you get the most when choosing a gear set.
It's important to understand that numerically higher ratios mean your engine must run at higher RPMs to rotate the wheels.
The same logic can be applied to numerically lower ratios in that they let your engine run at lower RPMs to rotate the wheels.
With that knowledge you'll be able to choose a Dana 30 gear ratio best suited for your driving preferences whether they be for long-distance highway driving or ultra-slow, off-road rock climbing.
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