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Celebrating our 37th Year of Corvettes
Click HERE to see some CTV Member-owned C1 CorvettesClick HERE to see some CTV Member-owned C2 CorvettesClick HERE to see some CTV Member-owned C3 CorvettesClick HERE to see some CTV Member-owned C4 CorvettesClick HERE to see some CTV Member-owned C5 CorvettesClick HERE to see some CTV Member-owned C6 CorvettesClick HERE to see some CTV Member-owned C7 Corvettes

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ESTIMATE YOUR HORSEPOWER

  (THIS IS JUST AN ESTIMATE BASED ON SIMPLE CALCULATIONS!)

Calculate Horsepower from 1/4 Mile Trap Speed
Vehicle weight in pounds (including driver)
lbs
Trap speed at end of 1/4 mi in m.p.h.
m.p.h.

You are making : HP at the rear wheels
and HP at the flywheel*.
JavaScript must be enabled in your browser for the calculation to work.
*Note:  Assuming a 18% drive train loss.
Calculate Horsepower from 1/4 Mile ET
Vehicle weight in pounds (including driver)
lbs
ET in seconds
sec

You are making : HP at the rear wheels and HP at the flywheel*.
JavaScript must be enabled in your browser for the calculation to work.

*Note:  Assuming a 18% drive train loss.

Calculate Tire Diameter
Tire width - Series - Wheel Diameter
Example 275 - 60 R 15
Tire Width
Tire Series
Wheel Diameter

Tire diameter in inches
JavaScript must be enabled in your browser for the calculation to work.

 

Calculate MPH for RPM range
Tire diameter
Gear Ratio

This calculation assumes the car's transmission is in drive or 1:1 ratio, no overdrive. For Overdrive cars mutliply the overdrive ratio times the rear and gear ratio. Example a 700R4 transmission has an overdive ratio 0.7:1. For a 4.11 rear end multiply 4.11 x 0.7 = 2.877. Enter 2.877 as the number for the gear ratio to calculate speeds in overdive.
JavaScript must be enabled in your browser for the calculation to work.
1000 rpmmph4500 rpmmph
1500 rpmmph5000 rpmmph
2000 rpmmph5500 rpmmph
2500 rpmmph6000 rpmmph
3000 rpmmph6500 rpmmph
3500 rpmmph7000 rpmmph
4000 rpmmph7500 rpmmph

 

Calculate Rear End Gear Ratio
Enter the tire diameter in inches, rpm's of the motor at a certain speed as indicated by your speedometer in mph. This calculation assumes the car's transmission is in drive or 1:1 ratio, no overdrive.
Tire Diameter (in)
RPM
Speed at RPM (mph)

Rear End Gear Ratio
JavaScript must be enabled in your browser for the calculation to work.

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Last Updated: 01-28-10 .

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