Home » Simplify your calculations with ease. » Mechanical Calculators » 700R4 Speedometer Gear Calculator Online

# 700R4 Speedometer Gear Calculator Online

The 700R4 Speedometer Gear Calculator is a valuable tool used by automotive enthusiasts and professionals to determine the appropriate gear ratio needed for accurate speedometer readings in vehicles equipped with a 700R4 transmission. This calculator assists in finding the correct number of teeth required on the speedometer gear to ensure precise speed readings.

## Formula of 700R4 Speedometer Gear Calculator

The calculation for determining the number of driven teeth utilizes the following formula:

``Driven Teeth = (Drive Teeth x Axle Ratio x Tire Revolutions per Mile) / 1000``

Where:

• Driven Teeth: This represents the number of teeth need on the speedometer gear, which is the gear being find.
• Drive Teeth: This denotes the number of teeth on the drive gear located on the transmission output shaft. For the 700R4 transmission, this value is typically fix, often at 15 teeth.
• Axle Ratio: The axle ratio refers to the ratio of the number of turns the driveshaft makes compared to one revolution of the wheels. This ratio can be found in the vehicle’s manual or through online resources.
• Tire Revolutions per Mile: This indicates the number of times the vehicle’s tires rotate for every mile traveled. It is calculated using the formula:
``Tire Revolutions per Mile = 63360 / (Tire Diameter in Inches x Pi)``

Where Pi is a mathematical constant approximately equal to 3.14159.

## Table of General Terms

Note: This table is for informational purposes only and should not be a substitute for consulting a qualified mechanic for installation of the chosen speedometer gear.

## Example of 700R4 Speedometer Gear Calculator

Suppose a vehicle with a 700R4 transmission has a drive gear with 15 teeth, an axle ratio of 3.73, and tires with a diameter of 28 inches. Using the formula provided, we can calculate the number of driven teeth required for accurate speedometer readings.

``Driven Teeth = (15 * 3.73 * (63360 / (28 * 3.14159))) / 1000``

After performing the calculation, we find that the number of driven teeth needed is approximately X.

## Most Common FAQs

Q: Can I use the calculator for other transmission types?

A: While this calculator is specifically design for the 700R4 transmission, similar calculations may be applicable to other transmission types with appropriate adjustments.

Q: What if my tire diameter is not in inches?

A: Ensure that all measurements are in inches for accurate calculations. Convert tire diameter from other units to inches before using the calculator.