10R80

The 10R80 is a 10-speed automatic gearbox designed thanks to fruitful cooperation between Ford and GM (10L90). Both companies pointed out the fact that while the mechanical part of the gearbox was developed collaboratively, the software part of the 10R80 will be different for each manufacturer and, as a result, their corresponding powertrain structures should not necessarily resemble each other in view of gear shifting algorithms. This transmission has 10 forward gears, three of which are overdrive ratios. It's deep 4.69 to 1 first gear ratio is the lowest in its class and it features a relatively tall 0.63 to 1 final overdrive ratio.