Ford-GM 10-speed automatic transmission

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This transmission is part of a joint-venture between General Motors and Ford Motor Company to split development of two transmissions, a longitudinal 10-speed and a transverse 9-speed. As part of their joint-venture, Ford will let GM use Ford's 10-speed transmission, with rights to modify and manufacture it for their own applications. In-exchange for Ford's 10-speed transmission, General Motors will let Ford use GM's 9-speed transmission for front-wheel drive applications. [1][2]

The improved performance is the result of smaller steps between each ratio, maximizing engine power under acceleration, while a wide 7.39 overall gear ratio spread and a lower numerical top gear ratio results in improved efficiency by reducing engine revolutions at highway speeds.

Ford 10R80 / GM 10L90
ManufacturerGeneral Motors/Ford
Body and chassis
Class10-speed longitudinal automatic transmission
PredecessorGM 8L90
Ford 6R80

Gear Ratios[edit]

Model 1 2 3 4 5 6 7 8 9 10 R
Hydra-Matic 10L80 (MF6) 4.70 2.99 2.15 1.80 1.52 1.28 1.00 0.85 0.69 0.64 4.87


General Motors[edit]



The 10R80 is made at the Ford Livonia Transmission Plant in Livonia, Michigan, the Hydra-Matic 10L80 is made at the General Motors Romulus Powertrain Plant,in Romulus, Michigan.[3]


  1. ^ "Ford and GM finally consummate 9- and 10-speed joint development - SAE International". Retrieved 2018-03-24.
  2. ^ "Exclusive: An Inside Look At Ford's New 10 Speed Transmission - The Truth About Cars". The Truth About Cars. 2014-12-01. Retrieved 2018-03-24.
  3. ^ Ford 10R80, GM 10L80 10 Speed Transmission - 10R80, 10L80 10 Speed Automatic Transmission Specs

External links[edit]