Precisely determine horsepower gains or losses from drag strip trap speeds and vehicle weight. Our Engine HP Horsepower Change Calculator helps racers and tuners quantify performance modifications effectively. Optimize your car's power for the track using the trap speed method with this free, accurate tool.
Formula:
The horsepower change is calculated by determining the individual horsepower values before and after modifications using the trap speed method, then finding the difference.
HP = (Weight × (Trap Speed / 234)3)
ΔHP = HPnew - HPold
Where:
- HP: Estimated Horsepower
- Weight: Vehicle Weight in pounds (lbs)
- Trap Speed: Trap Speed in miles per hour (mph)
- ΔHP: Change in Horsepower