2004 Ford Freestar 3.8 gear ratio calculator

With 2004 Ford Freestar 3.8 Gear Ratio Calculator you can see the theoretical top speeds in all gears. You can change tire dimensions to calculate the effect on top speed and gearing. It will help you to find the best gear ratios for your racing car and to understand when it is the best time to change a gear.

Maximum Power RPM: Revolutions per minute when reaching
the top of the power curve.
Width Profile Wheel diameter
Tire Diameter [mm]:  OR 
Numbers of teeth Gear Ratio
Final Drive Ratio:  x   OR 
1st Gear Ratio:  x   OR 
2nd Gear Ratio:  x   OR 
3rd Gear Ratio:  x   OR 
4th Gear Ratio:  x   OR 
5th Gear Ratio:  x   OR 
6th Gear Ratio:  x   OR 
Speed in:




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Gear shift Difference after shifting RPM after shifting
from 1st Gear to 2nd Gear 2205 2545
from 2nd Gear to 3rd Gear 1583 3167
from 3rd Gear to 4th Gear 1425 3325
kmh / RPM 1000 2000 3000 4000 4750
1st Gear 13 26 39 52 61.8
2nd Gear 24.3 48.6 72.9 97.1 115.4
3rd Gear 36.4 72.9 109.3 145.7 173
4th Gear 52 104.1 156.1 208.2 247.2

This calculator is completely based on mathematical formulas to be useful to you. Try the Transmission Gear Ratio Calculator now.