C5AE-B This is the early 1967 production cooling fan, used up until 11/14/1966 on 289 engine applications. This does not include those cars with factory, or "integral" air conditioning. Fan description - 5 blades and 17 inches in diameter. Ford master part number C5AZ-8600-A.
*Note - Excludes integral air conditioning.
Check out this interesting video where they test the efficiency of factory style and aftermarket fans. Spoiler alert: the clutch fans are the most efficient!
Check out this video