Curbside Trivia/QOTD: June 1965 Magazine Ad – Can You Identify The Engine Family? Do You Have Any Experience With Said Engine Family?

While flipping through a very musty Motor magazine from June 1965, I had to flip back to this advertisement for “Ford Authorized Reconditioned” engines.  Ford is well-known for its somewhat scattershot approach to internal combustion, especially during the 1950s, ’60s, and ’70s; it’s almost a Curbside pastime to identify and discuss the Blue Oval’s myriad engine families.  Without letting too much on, I thought it would be a fun exercise to play a little trivia today.

In the comments, identify the engine family displayed in the posted advertisement and explain how you came to your conclusion.  As the answer becomes apparent, let’s shed a little light on the nuances of this specific engine and discuss our personal experiences with it, if applicable.  Have fun!