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ZBUM's 1984 Nissan 300ZX WebSite Here are some HP calculators for you to try. One uses weight & MPH the other uses weight & ET. Elapsed Time (ET) is an estimate and real world results will vary with driver, track conditions and vehicle prep. Unsure? Then go actually race the 1/4 mile! If unsure of vehicle weight, visit a local truckstop or dragstrip. Enter the vehicle weight and 1/4 mile trap speed Vehicle Weight: 1/4 Mile Trap MPH: Your Estimated Net Horse Power: Your Estimated Flywheel Horse Power: Enter the vehicle weight and 1/4 mile elapsed time Vehicle Weight: 1/4 Mile ET: Your Estimated Net Horse Power: Your Estimated Flywheel Horse Power: Enter the vehicle weight and wheel horse power Vehicle Weight: Wheel Horse Power: Your Estimated 1/4 mile trap time: Your Estimated 1/4 mile trap speed: Calculations used: / Trap Speed (mph) \ 3 Horse Power = | ------------------ | x Vehicle Weight \ 234 / / 5.825 \ 3 Horse Power = | -------------- | x Vehicle Weight \ Elapsed Time / __________________ 3 / Vehicle Weight Elapsed Time = 5.825 x _ / ------------------ \/ Actual Horse Power ___________________ 3 / Actual Horse Power Elapsed Speed = 234 x _ / ------------------- \/ Vehicle Weight