Chart
Gearing Comparison for Ford MT82 and 6R80 Transmissions
MT82 Manual Transmission
| Gear | Transmission Ratio | Stock Final Drive (3.55) | Factory Tire ODR (30.5") | Upgraded Tire ODR (34.4") | Upgraded Final Drive (4.625) | Factory Tire ODR (30.5") | Upgraded Tire ODR (34.4") | Percentage Change (Factory) | Percentage Change (Upgraded) |
|---|---|---|---|---|---|---|---|---|---|
| 1st | 5.441 | 3.55 | 19.30 | 17.09 | 4.625 | 25.17 | 22.32 | +30.42% | +30.58% |
| 2nd | 2.839 | 3.55 | 10.07 | 8.92 | 4.625 | 13.13 | 11.63 | +30.41% | +30.42% |
| 3rd | 1.721 | 3.55 | 6.11 | 5.42 | 4.625 | 7.96 | 7.05 | +30.28% | +30.07% |
| 4th | 1.223 | 3.55 | 4.34 | 3.85 | 4.625 | 5.66 | 5.01 | +30.41% | +30.13% |
| 5th | 1.000 | 3.55 | 3.55 | 3.15 | 4.625 | 4.63 | 4.10 | +30.42% | +30.20% |
| 6th | 0.794 | 3.55 | 2.82 | 2.50 | 4.625 | 3.67 | 3.25 | +30.14% | +30.00% |
6R80 Automatic Transmission
| Gear | Transmission Ratio | Stock Final Drive (3.73) | Factory Tire ODR (30.5") | Upgraded Tire ODR (34.4") | Upgraded Final Drive (4.625) | Factory Tire ODR (30.5") | Upgraded Tire ODR (34.4") | Percentage Change (Factory) | Percentage Change (Upgraded) |
|---|---|---|---|---|---|---|---|---|---|
| 1st | 4.171 | 3.73 | 15.56 | 13.77 | 4.625 | 19.27 | 17.06 | +23.85% | +23.91% |
| 2nd | 2.342 | 3.73 | 8.73 | 7.73 | 4.625 | 10.84 | 9.60 | +24.15% | +24.15% |
| 3rd | 1.521 | 3.73 | 5.67 | 5.02 | 4.625 | 7.03 | 6.22 | +24.01% | +23.88% |
| 4th | 1.143 | 3.73 | 4.26 | 3.77 | 4.625 | 5.29 | 4.68 | +24.06% | +23.96% |
| 5th | 0.867 | 3.73 | 3.23 | 2.86 | 4.625 | 4.01 | 3.55 | +24.15% | +24.13% |
| 6th | 0.691 | 3.73 | 2.58 | 2.29 | 4.625 | 3.20 | 2.83 | +24.03% | +23.58% |