Having first appeared in 1995, “Engines at Specific High Power” was written by engineers Giacomo Augusto Pignone and Ugo Romolo Vercelli and is much more than a book of engine technology. From the first time it came out, it distinguished itself for the ample in-depth conceptual-philosophic aspects that constitute the peculiarities of major interest of this book, as well as being an unquestioned text of reference in its specific environment. Now, the book has been reprinted for the fourth time. This long-awaited revised and corrected edition, enriched by the notes and indications provided by Pignone, explains the technology of racing cars with all the fundamental parameters that govern the way an engine works and is embellished by important contributions which, as well as updating previously discussed aspects, expand the contents of the work. Among others, there are a number of sections in which the book looks at subjects associated with the mechanics in the light of evolution that has taken place in recent years in the engine field: transmissions, electronic management, the choice of materials, the specific high powered diesel engine and the hydrogen vehicle. In going into the various questions, the authors have attempted to give access to many subjects which are not simple and have been the prerogative of just a few people who work in the industry, while maintaining absolute precision in the presentation.