Drag Racing Calc Pro

Want to know your 1/4 (Quarter mile) performance? Want to know your engine power based on 1/4 mile performance?

Changing tire or wheel size? Want to know how will it affect the highway rpm's or the 1/4 mile performance?

Easy to know with this calculator! The Calculator for Drag Racing!

★ 1/8 to 1/4 mile E.T. Converter. Easily convert short track times to 1/4 mile times!

★ Predict weather and track conditions right from this app.

★ Need to know your vehicle speed at a given engine RPM?

This calculation comes useful when targeting a certain engine RPM with a given tire, trans-gear and differential gear-ratio for highway cruising or quarter-mile passes.

★ Engine RPM @ MPH

This one is the opposite of the first one. This one comes handy to experiment with different tire-size, trans-gear and differential gear ratio combinations to reach a certain vehicle speed and keep the engine RPM within a given range for controlling MPG, engine noise, exhaust tone, etc.

★ Gear Ratio.

Useful when wanting to determine the gear ratio present in your differential without disassembly.

★ Gear Set Ratio.

Found a set of gears at a swap-meet or the junk yard and don't know the ratio? Enter the number of teeth for both the ring-gear and the pinion and you're done!

★ Overall Tire Diameter.

Very useful before making a final decision about purchasing wheels and tires! Test before you buy! Get accurate dimensions by combining different tire sizes and wheel diameters, profiles and widths!

★ Elapsed Time.

Predict your 1/4 Mile E/T by providing the engine HP and race-car weight! A must for drag racing.

★ Horsepower @ E.T.

Don't know your engine's power? Easily get a good approximation based on the car's weight and 1/4 mile E.T.!

✔ And if this isn't enough, you don't need to surf the net looking for the required trans data! It's included inside the App with more manufacturers added constantly!

✔ Save money by experimenting before making permanent mods!

✔ Free lifetime updates! Download now!