The 2008-2010 New Venture NV273F transfer cases were initially built at the Magna owned New Process Plant in Syracuse NY with later production cases being assembled by Magna in Mexico. An industry standard, round, 6-bolt mounting flange mates to the back of the transmission.They were used for both manual and automatic transmission equipped Super Duty® 4x4s. A 34 spline input shaft is used for all applications.
The NV273F was the optional Transfer Case for the 2008-2010 Ford Super Duty® F-250, F-350, F-450, F-550 4x4 trucks. The NV273F is a fairly reliable unit that underwent a number of design modifications during it's production life. The NV273F is an electric shift, chain drive transfer case with synchronized 4x4 high range, 2.72:1 planetary driven 4x4 low range and aluminum case castings.
For shift on the fly 4x2 to 4x4 operation, a multi-piece synchronizer set is used. The electrically shifted mode fork engages a sliding clutch ring with the sprocket carrier. At the same time, the vacuum operated front hub-locks are engaged for near instant power transfer to the front wheels. For low range operation, the electrically shifted range fork is spring loaded to allow the fork to move even if the range hub clutch teeth are momentarily out of synch with the planetary. The spring loaded fork does increase wear on the plastic range fork shift pads, however a more robust fork and pad design was introduced late in the 2001 model year.
The 2008-2010 NV273F transfer cases are not interchangeable with the 2011-2016 models due to a change in the front case configuration.
