Before you run out and order the book, be advised that it adresses the 194,215(Pontiac),230,250 and 292 engines exclusively. It's spelled out right on the front cover. I couldn't even find a mention of the 216 or 235 engines in the entire book.
However, if you're a 194-292 fan it's well written, the illustrations and graphs are great and it would be a useful tool for making those mods.
Dave