I stopped trying to see the logic of Ford's engine "Families?" So Ford in the mid 60s made their most competitive big block. Their 427. Even a more higher technology SOHC Cammer version. They of course discontinued. And advanced their lower performance 390-460 line. Adding a Boss version of 429. That really under performed on the street/strip. So then came the 428 CJ. Not bad. But too late on the HP wars. And their small blocks? Even worse. 4 different versions of the 351. None are directly component swappable. And of course a 352. And that too is specific to that platform.
