Eric's transmission gear ratio calculator

Rear Gear Ratio Tire Diameter (inches) Tire Expansion Ratio (less than 0.20)
Granularity: Low Medium High

Transmission ratios must be given from 1st to highest gear, separated by spaces or commas, (or both)

Custom Gears Example: 2.50 2.00 1.50 1.00 0.75 0.50
<-- Enter custom gear ratios here.

The popup menu selection overrides custom gears if its not blank.
Select blank, or leave blank here to use custom values.

RPM range to display 100-14999

MPH range to display 1-999

  Examples           TRANSMISSION      1ST  2ND  3RD  4TH  5TH  6TH  7TH  8TH  9TH 10TH
-----------------------------------------------------------------------------------------
                     GM Powerglide     1.82 1.00
 Borg-Warner T-5 (GM Applications)     2.95 1.94 1.34 1.00 0.63
  Borg-Warner T-5 (GM Close Ratio)     2.75 1.94 1.34 1.00 0.74
       Borg-Warner T-10 2nd Design     2.64 1.61 1.23 1.00
       Borg-Warner T-10 2nd Design     2.88 1.74 1.33 1.00
       Borg-Warner T-10 2nd Design     3.44 2.28 1.46 1.00
            GM Muncie (M-21, M-22)     2.20 1.64 1.28 1.00
                  GM Muncie (M-20)     2.52 1.88 1.46 1.00
                     GM Powerglide     1.76 1.00
           GM Turbo HydraMatic 350     2.52 1.52 1.00
           GM Turbo HydraMatic 400     2.48 1.48 1.00
        GM Turbo HydraMatic 200-R4     2.74 1.57 1.00 0.67
        GM Turbo HydraMatic 700-R4     3.06 1.62 1.00 0.70
Saginaw 3-speed No Lines (grooves)     2.85 1.68 1.00
           Saginaw 3-speed 1 Line      2.54 1.50 1.00
           Saginaw 3-speed 2 Lines     3.11 1.84 1.00
           Saginaw 3-speed 3 Lines     3.50 1.89 1.00
          Saginaw 4-speed No lines     2.84 2.01 1.35 1.00
            Saginaw 4-speed 1 Line     2.54 1.80 1.44 1.00
           Saginaw 4-speed 2 Lines     3.11 2.20 1.47 1.00
           Saginaw 4-speed 3 Lines     3.50 2.47 1.65 1.00
                            4L80E      2.48 1.48 1.00 0.75
                            4l60E      3.06 1.62 1.00 0.70
                              AOD      2.40 1.46 1.00 0.67
                              518      2.45 1.45 1.00 0.69