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Celebrating our 37th Year of Corvettes
Click HERE to see some CTV Member-owned C1 Corvettes Click HERE to see some CTV Member-owned C2 Corvettes Click HERE to see some CTV Member-owned C3 Corvettes Click HERE to see some CTV Member-owned C4 Corvettes Click HERE to see some CTV Member-owned C5 Corvettes Click HERE to see some CTV Member-owned C6 Corvettes Click 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 rpm mph 4500 rpm mph
1500 rpm mph 5000 rpm mph
2000 rpm mph 5500 rpm mph
2500 rpm mph 6000 rpm mph
3000 rpm mph 6500 rpm mph
3500 rpm mph 7000 rpm mph
4000 rpm mph 7500 rpm mph

 

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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