WARNING: This page is about a different car, the 2008 Mercury Sable, 2008 Ford Taurus X, and 2008 Ford Taurus. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
Refer to the appropriate Engine article for the specification.
Measure each camshaft journal diameter in 2 directions.
Fig 1: Locating Areas For Measuring Camshaft Journal Diameter