Crate Engines
Engine Components
Oiling System
Cooling System
Chassis & Suspension
General information
Performance Services
Exclusive Products
Dyno Results
Blueprinted Engines
Cylinder Heads
Springs & Perches
1/4 Mile Performance
Horse Power
Gear Ratio
Rearend Ratio
Compression Ratio
Reaction Time
Free & Fun Stuff
11 's on a budget
Printable Calendars
Photo Galleries
Our Pbase Galleries
Our Swap Meet
Our Favorite Links
Return to home page

This calculator may help you in your quest for the "Perfect Rear End Ratio"

Enter the values for your vehicle and then click the calculate button.

                                             Enter MPH:
Enter Engine RPM at given MPH * :
            Enter Tire Diameter (in inches):

                           Rear End Gear Ratio: 

Note:- We are not responsible for any potential errors. Always verify calculations before making changes and driving your vehicle!
*Engine RPM should be measured in direct drive, this is usually the highest non-overdrive gear. In automatics with non-lock-up torque convertors, convertor slippage will result in additional errors, this can be minimized by measuring the RPM during light cruise to near coast conditions.