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Joe, The book is more about rebuilding or modifying Y-Blocks as a whole, not noting individual differences between the years. It takes you through the steps and nuances of rebuilding a stock 292" that should be able to be applied to all Y-Blocks and then the building of a modified 322".
There is a nice picture of a 239" in the intro and states it is Fords first OHV engine, replacing the 239" Flathead.