[ford38v8]

Aussie, I don’t understand how 3 rows can have 35% more surface than 4 rows. Please explain?
Fan proximity to radiator ( without a shroud) should be no more than an inch. With a shroud, the important relationship is fan to shroud, the trailing edge flush with the shroud. The crank mount fan was not one of Ford’s better ideas, but a shroud can prove to be the best use of your new radiator.