The Spicer Gear Ratio Calculator will assist you in determining the ratio between the ring gear and pinion gear in the differential housing in the rear end axle of a vehicle.
The rear end axle is responsible for transmitting power to the rear wheels in a rear-wheel-drive vehicle. The calculation uses the number of teeth in the ring gear and divides it by the number of teeth in the pinion gear to provide you with a “[result] to 1” ratio.
For example, if the pinion gear has 41 teeth, and the ring gear has 11 teeth, the ratio would be calculated as 41/11, which is equal to 3.73 = 3.73:1.
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