Required Wheel Horsepower

For a fixed car/track setup, 1/8-mile ET scales roughly with power as ET ∝ HP−1/3. So the HP required to move from your current ET to a faster target ET is: HPreq = HPnow × (ETnow / ETtarget.

Notes: This assumes weight, traction, gearing, converter, etc. are unchanged. Real-world results vary with launch, weather/DA, tire, and driver skill.
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