“Adapting the 6F architecture to the EcoBoost engine demanded a close look at every component, piece of hardware, and calibration measure to ensure that this transmission could answer the needs of a higher output engine; help, not hinder, fuel economy; and meet Ford’s strict durability standards,” said Barb Samardzich, vice president, Global Powertrain Engineering.
The first model that will incorporate the 6-speed SelectShift transmission unit is the 2010 Lincoln MKS which coincides with the first Ford vehicle to feature the new 3.5-liter EcoBoost engine. The MKS will produce a maximum power of 355 horsepower and 350 lb-ft of torque while the fuel consumption goes as much as 25 mpg on highway. The other models to get the transmission system are Ford Flex and Lincoln MKT, Ford said in a statement for the press.
“We had to bulk up and strengthen all of the transmission’s core parts for higher duty cycles,” said David Capoccia, transmission system manager, Ford Powertrain Operations. “The thicker gears, the improved carriers, upgraded clutches are all part of a set of hardware actions that translate to superior performance and durability for the customer.”
“The 6F-55 has all the same features that customers have told us they desire from the 6F-50 transmission, and that includes fluid-fill for life and flat tow capability,” adds Bryce Bollwahn, a systems supervisor at Ford’s Automatic Transmission New Product Center.
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