8F24/8F35/8F40/8F57/ 8F SelectShift | |
---|---|
Overview | |
Manufacturer | Ford |
Production | 2019–present |
Body and chassis | |
Class | 8-speed transverse automatic transmission |
Related | GM 9T50 |
Chronology | |
Predecessor | 6F35/6F50/6F55 |
The Ford 8F transmission is a family of automatic transmissions with eight forward speeds for light-duty transversely-mounted applications. It is designed and manufactured by Ford Motor Company starting in 2019; the 8F35 is derived from the General Motors 9TXX family, which in turn was developed from an earlier GM 6T40 transmission.
Ford and GM announced a joint venture to share automatic transmission designs in April 2013: GM would adopt a 10-speed longitudinal transmission primarily designed by Ford, while Ford would adopt the GM 9T 9-speed transverse transmission. [1] Ford declined to use the GM 9T, however, as the promised improvement in fuel consumption was less than expected, and removed one gear, resulting in the Ford 8F35. [2] [3]
At the same time, Ford also launched the 8F24 and 8F57 transmissions. The 8F24 is unique to Ford, while the 8F57 is derived from an earlier GM-Ford 6-speed automatic transmission. [4]
The 8F24 is designed for engines with a maximum output of 240 N⋅m (180 lbf⋅ft). [4]
The 8F35 is derived from the GM 9T50 [5] and both share components with the GM 6T40 and Ford 6F35. [6] The change in ratio between the 2nd and 3rd gears is relatively small; [4] in later versions, the transmission is instructed to skip 2nd gear entirely to enhance throttle response. [7] It uses six solenoids (on two driving clutches and four brake clutches), and a selectable one-way clutch, applied in different combinations to engage the eight forward speeds and reverse. [8] It is designed for engines with a maximum output of 350 N⋅m (260 lbf⋅ft). [4]
The 8F57 is designed for engines with a maximum output of 575 N⋅m (424 lbf⋅ft). [4]
8F24/8F35/8F40/8F57/ 8F SelectShift | |
---|---|
Overview | |
Manufacturer | Ford |
Production | 2019–present |
Body and chassis | |
Class | 8-speed transverse automatic transmission |
Related | GM 9T50 |
Chronology | |
Predecessor | 6F35/6F50/6F55 |
The Ford 8F transmission is a family of automatic transmissions with eight forward speeds for light-duty transversely-mounted applications. It is designed and manufactured by Ford Motor Company starting in 2019; the 8F35 is derived from the General Motors 9TXX family, which in turn was developed from an earlier GM 6T40 transmission.
Ford and GM announced a joint venture to share automatic transmission designs in April 2013: GM would adopt a 10-speed longitudinal transmission primarily designed by Ford, while Ford would adopt the GM 9T 9-speed transverse transmission. [1] Ford declined to use the GM 9T, however, as the promised improvement in fuel consumption was less than expected, and removed one gear, resulting in the Ford 8F35. [2] [3]
At the same time, Ford also launched the 8F24 and 8F57 transmissions. The 8F24 is unique to Ford, while the 8F57 is derived from an earlier GM-Ford 6-speed automatic transmission. [4]
The 8F24 is designed for engines with a maximum output of 240 N⋅m (180 lbf⋅ft). [4]
The 8F35 is derived from the GM 9T50 [5] and both share components with the GM 6T40 and Ford 6F35. [6] The change in ratio between the 2nd and 3rd gears is relatively small; [4] in later versions, the transmission is instructed to skip 2nd gear entirely to enhance throttle response. [7] It uses six solenoids (on two driving clutches and four brake clutches), and a selectable one-way clutch, applied in different combinations to engage the eight forward speeds and reverse. [8] It is designed for engines with a maximum output of 350 N⋅m (260 lbf⋅ft). [4]
The 8F57 is designed for engines with a maximum output of 575 N⋅m (424 lbf⋅ft). [4]