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Gear Ratio Calculator >>

1996 Dodge Viper GTS 6 speed manual Gear Ratios Calculator, MPH, Top Speed

 


This calculator outputs the how fast the Dodge Viper GTS can go in each gear as calculated by the gear ratios, engine redline and tire size.
The ultimate top speed may be limted by the power, drag and aerodynamics of each individual car.

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Tire Size
(345/30/20)
/ -
OR
Tire Diameter
(inches)
 
Final Drive Ratio
Redline (RPM)
1st Gear
2nd Gear
3rd Gear
4th Gear
5th Gear
6th Gear
7th Gear
8th Gear

RPM 1st Gear 2nd Gear 3rd Gear 4th Gear 5th Gear 6th Gear 7th Gear 8th Gear
500 4.78 7.14 9.78 12.71 17.18 25.42 0 0
600 5.73 8.57 11.73 15.25 20.61 30.5 0 0
700 6.69 10 13.69 17.79 24.05 35.59 0 0
800 7.65 11.42 15.64 20.34 27.48 40.67 0 0
900 8.6 12.85 17.6 22.88 30.92 45.76 0 0
1000 9.56 14.28 19.55 25.42 34.35 50.84 0 0
1100 10.51 15.71 21.51 27.96 37.79 55.93 0 0
1200 11.47 17.14 23.47 30.5 41.22 61.01 0 0
1300 12.42 18.57 25.42 33.05 44.66 66.09 0 0
1400 13.38 19.99 27.38 35.59 48.09 71.18 0 0
1500 14.33 21.42 29.33 38.13 51.53 76.26 0 0
1600 15.29 22.85 31.29 40.67 54.96 81.35 0 0
1700 16.25 24.28 33.24 43.21 58.4 86.43 0 0
1800 17.2 25.71 35.2 45.76 61.83 91.51 0 0
1900 18.16 27.13 37.15 48.3 65.27 96.6 0 0
2000 19.11 28.56 39.11 50.84 68.7 101.68 0 0
2100 20.07 29.99 41.06 53.38 72.14 106.77 0 0
2200 21.02 31.42 43.02 55.93 75.57 111.85 0 0
2300 21.98 32.85 44.97 58.47 79.01 116.93 0 0
2400 22.94 34.27 46.93 61.01 82.44 122.02 0 0
2500 23.89 35.7 48.89 63.55 85.88 127.1 0 0
2600 24.85 37.13 50.84 66.09 89.32 132.19 0 0
2700 25.8 38.56 52.8 68.64 92.75 137.27 0 0
2800 26.76 39.99 54.75 71.18 96.19 142.35 0 0
2900 27.71 41.42 56.71 73.72 99.62 147.44 0 0
3000 28.67 42.84 58.66 76.26 103.06 152.52 0 0
3100 29.63 44.27 60.62 78.8 106.49 157.61 0 0
3200 30.58 45.7 62.57 81.35 109.93 162.69 0 0
3300 31.54 47.13 64.53 83.89 113.36 167.78 0 0
3400 32.49 48.56 66.48 86.43 116.8 172.86 0 0
3500 33.45 49.98 68.44 88.97 120.23 177.94 0 0
3600 34.4 51.41 70.4 91.51 123.67 183.03 0 0
3700 35.36 52.84 72.35 94.06 127.1 188.11 0 0
3800 36.31 54.27 74.31 96.6 130.54 193.2 0 0
3900 37.27 55.7 76.26 99.14 133.97 198.28 0 0
4000 38.23 57.12 78.22 101.68 137.41 203.36 0 0
4100 39.18 58.55 80.17 104.22 140.84 208.45 0 0
4200 40.14 59.98 82.13 106.77 144.28 213.53 0 0
4300 41.09 61.41 84.08 109.31 147.71 218.62 0 0
4400 42.05 62.84 86.04 111.85 151.15 223.7 0 0
4500 43 64.27 87.99 114.39 154.58 228.78 0 0
4600 43.96 65.69 89.95 116.93 158.02 233.87 0 0
4700 44.92 67.12 91.9 119.48 161.45 238.95 0 0
4800 45.87 68.55 93.86 122.02 164.89 244.04 0 0
4900 46.83 69.98 95.82 124.56 168.32 249.12 0 0
5000 47.78 71.41 97.77 127.1 171.76 254.2 0 0
5100 48.74 72.83 99.73 129.64 175.2 259.29 0 0
5200 49.69 74.26 101.68 132.19 178.63 264.37 0 0
5300 50.65 75.69 103.64 134.73 182.07 269.46 0 0
5400 51.61 77.12 105.59 137.27 185.5 274.54 0 0
5500 52.56 78.55 107.55 139.81 188.94 279.63 0 0
5600 53.52 79.97 109.5 142.35 192.37 284.71 0 0
5700 54.47 81.4 111.46 144.9 195.81 289.79 0 0
5800 55.43 82.83 113.41 147.44 199.24 294.88 0 0
5900 56.38 84.26 115.37 149.98 202.68 299.96 0 0
6000 57.34 85.69 117.33 152.52 206.11 305.05 0 0
RPM 1st Gear 2nd Gear 3rd Gear 4th Gear 5th Gear 6th Gear 7th Gear 8th Gear





Some additional information on how these are calculated:

When D is the diameter of the tire, the car moves forward a distance πD with each revolution of the tire. If there are F revolutions per unit of time, it moves forward at a speed of πD´F per unit of time. If D is in inches and F is in revolutions per minute (rpm), the above result will be in inches per minute. There are 63,360 inches in a mile and 60 minutes in an hour, so one inch per minute equals 60/63360 miles per hour or 1/1056 mph. So we have the following formula:

V(mph) = D(in) ´ F(rpm) ´ (π/1056)

In the automotive industry, the coefficient 1056/π is usually taken to be equal to 336 (exactly it is 336.1352398...) and the formula corresponding to the above is:

(mph)(gear ratio)(336) = (tire diameter in inches)(rpm)

With the above numerical approximation, both formulas are identical if we consider that (rpm)/(gear ratio) is the rate of rotation of the tires. So the "gear ratio" as the number of rotations of the driveshaft for each turn of the tire. This ratio is normally more than 1, except in overdrive gear. So, calling R the "gear ratio", your final answer is:

V(mph) = D(in) ´ F(rpm) ´ (π/1056) / R

or, approximately: V = (D ´ F) / (336 ´ R)

where V is the velocity (in mph), D the tire diameter (in inches), F the engine rpm, and R the gear ratio.

 


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