Gear Ratio / Engine RPM Calculator
Under/Overdrive:
(Aftermarket Only)
*
Transmission:
1st
Enter all values
2nd
on this form in
3rd
whole or decimal
4th
format only -
5th
no percentages.
6th
Reverse
*
Transfer Case:
High
Low
*
Differential Gear:
Transmissions:
C4
C6
C6 Wide Ratio
Ford 3.03
Ford 3.03 Wide Ratio
Warner T-18 4 spd
NP435
Final Drive Only
reset
Transfer Case:
NP203
NP205
2 Wheel Drive
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