2:91 or 3:55?

Here’s a little something I came across recently while doing some 1/8 mile gear ratio calculations for a friend. It has a wide range of transmissions as well as selection for custom ratios. It’s the most satisfying gear calculator I have come across yet... hit auto shift and it runs the rpm and shift points for you.
Gear Ratios, RPM and Tire Diameter to MPH with Shift Points Calculator