Book: Petersen's Complete Ford Book copyright 1972.
Article: Those Diggers from Dearborn, by Gray Baskerville.
Page: 133 picture 4.
Caption for picture 4: "The famed bass-ackward flathead of Jack Nichols and the Smith Bros.(Don & Floyd) was built to use the exhaust ports as intake and intake ports as exhausts. In order to do this, Jack tried 11 reverse rotation cams before Tucker ground him one that worked. The engine, a 3/8 by 1/8 Ford, ran 25% nitro and turned in excess of 7200 rpm. Terminal trap speed in a much modified '32 five-window was (for then) a honkin' 110mph."