From California Bill Fisher's Ford Speed Manual, 1952 Edition
“. . . it would be unwise to assume that the V-8 Ford and Mercury flat heads are outmoded for racing. If such were the case, the majority of the speed equipment manufacturers would be silently fading away into the overhead-valve-engine accessory field.”
“Let’s face it! The flat-head V-8 is here to stay in racing at least another quarter of a century. Perhaps by then we will be telling a new generation about how the old V-8’s would be blowing off their gas turbines if only the old times like Hartelt, Rounthwaite, Hernandez, and others were around to run them again.” That would be 1977, based on when the book was written. While they are not part of mainstream racing anymore, there are still a large number of people building flatheads for power, often for track use. This prediction was a little optimistic (thanks to the Chevy OHV V-8) but not entirely untrue. -- ed
How do we hot rod a flathead?