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![Power-Speed Calculator [Slide Rule Style, E.t./Mph, Tire Diameter/Gear Ratio, Displacement/Compression Ratio]](https://www.jegs.com/images/mini_750/700/710/710-89650.jpg)
Vehicle Info NeededMOROSOPART NUMBER: 710-89650
Power-Speed Calculator [Slide Rule Style, E.t./Mph, Tire Diameter/Gear Ratio, Displacement/Compression Ratio]
$2299
1 left in stock
Ships on Nov 02, 2026
Lowest Price GuaranteePower-Speed CalculatorSlide Rule Style E.t./Mph Tire Diameter/Gear Ratio Displacement/Compression Ratio Sold Individually
Ballpark math done trackside with a phone calculator is slower and less reliable than a purpose-built reference.
Moroso 89650 Power-Speed Calculator Features:
- Slide tool works out the relationship between E.T., M.P.H. and power-to-weight ratio.
- Relates tire diameter to speed and gear ratio.
- Relates engine displacement to compression ratio.
- Calculates horsepower measured at the flywheel.
- Quantity: Sold Individually.
Moroso's Power-Speed Calculator is like having a dyno in your back pocket! Using information such as tire size, gear ratios, horsepower and displacement, this handy slide rule tool works out the relationship between E.T. and MPH, tire diameter to speed and gear ratio, engine displacement to compression, power to weight ratios, and many other factors that go into building a race-winning car.
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Features:
- Tire diameter to speed and gear ratio
- Engine displacement to compression ratio
- Horsepower measured at flywheel
- Horsepower ratings are calculated for Rear Wheel Horsepower
Part TypePower-Speed Calculator
Product LineMoroso Power-Speed Calculator
BrandMOROSO
Package Height0.1
Package Width4.0
Package Length10.1
Weight0.15 PG
Part CategoryPerformance Parts
Tool StyleSlide Rule
BacklitNo
CalculatesE.T./MPH, Tire Diameter/Gear Ratio, Displacement/Compression Ratio
QuantitySold Individually
Lcd ReadoutNo
Part FitmentSemi Universal
Vendor Part Number89650
Package Qty1
Package TypeEA
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Some parts are not legal for use in California or other states with similar laws / regulations
