Hotrodders Racing Calculators

Horsepower
Horsepower from MPH .~.
Calculate Horsepower from quarter mile speed

Horsepower from Elapsed Time.~.
Calculate Horsepower from quarter mile ET

Horsepower from Head Flow .~.
Calculate Horsepower from head flow cfm

Gear and Tire Size
Tire Diameter and Width .~.
Calculate Height and width from Metric sizes

Gear Ratio from MPH, Tire size.~.
Use tire size and rpm to Calculate the Gear Ratio

MPH from RPM, Gear ratio.~.
Use RPM and Gear ratio to Calculate MPH

Intake and Fuel
Intake Runner Length.~.
Recommended runner length

CFM Accurately .~.
Calculate CFM based on CI, RPM, weight

Compression and Valvetrain
Valve lift.~.
Calculate Valve Lift with a rocker ratio change

Dynamic Compression Ratio .~.
Calculate DCR to find what octane you may need.

EZ dyno
EZ Online Dyno.~.
Our EZ Online Dyno is very accurate!

HP & BMEP
Horsepower from BMEP.~.
Calculate HP from Brake Mean Effective Pressure

** NEW!! Check out the newly added Camshaft Calculator!!
This camshaft calculator bases it's primary calculations off the head flow vs CI to determine the best RPM for your engine and selects the most appropriate cam for your intended useage!

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