I can understand the 6.4 being deleted, but both gas engines?
From 2011 Ford Order Guide..............................
12/11/09 2011 SUPER DUTY® PICK-UP (F-250 / F-350 / F-450) PROPRIETARY
PACKAGES/OPTIONS DELETED
• Functional/Powertrain
— 5.4L 3V V8 Gas Engine
— 6.8L 3V V10 Gas Engine
— 6.4L OHV 32V V8 Turbo Diesel Engine
— 6 Speed Manual Transmission
— 4x2 Drive not available on F450 Pickup
— 5.38:1 Final Drive Ratio Axles
From 2011 Ford Order Guide..............................
12/11/09 2011 SUPER DUTY® PICK-UP (F-250 / F-350 / F-450) PROPRIETARY
PACKAGES/OPTIONS DELETED
• Functional/Powertrain
— 5.4L 3V V8 Gas Engine
— 6.8L 3V V10 Gas Engine
— 6.4L OHV 32V V8 Turbo Diesel Engine
— 6 Speed Manual Transmission
— 4x2 Drive not available on F450 Pickup
— 5.38:1 Final Drive Ratio Axles