Ford's EcoBoost engine's origin can be traced back to 2007 when the Lincoln MKR concept was the concept's main motivator and ...
Called the 3.5L EcoBoost, this engine makes more power than the original 6F transmission, now called the 6F-50, can handle. Enter the 6F-55, a new version of the 6F-50 with beefed up internals to ...