From the 1920s to through 1980, the Offenhauser and its descendants filled the grids and won race after race across the U.S. In the 1950s, entire Indy grids were made up exclusively of Offy-powered racers. Original hardcover received much acclaim, winner of the 1996 Thomas McKean Memorial award.

At the heart of every great car, there lies a great engine. The high-performance muscle car; the high-mileage family car; the high-speed race car: no matter the vintage or voltage, the torque or the task, the car with the power to move Americans—and the world—boasts an engine of remarkable ingenuity, dependability, and power. American Horsepower: 100 Years of Great Car Engines pays tribute to 25 outstanding American-made engines valued for their raw horsepower or their design simplicity, their longevity or their design innovation—or, in rare instances, all of the above. Bringing an auto enthusiast’s touch to the subject, author and photographer Mike Mueller details each engine’s conception, creators, specifications, performance records, and more. His knowledgeable, accessible text, accompanied by historical images, crisp detail shots, and studio-quality photographs, conveys with precision and unfailing interest the driving power of the great American engine.

Popular Science gives our readers the information and tools to improve their technology and their world. The core belief that Popular Science and our readers share: The future is going to be better, and science and technology are the driving forces that will help make it better.

Follow the history of hot rodding through this nostalgic look at vintage speed equipment. When most people think of speed parts, they rewind a few decades and think back to the Ford flatheads that were so prevalent in the 1940s and 1950s. However, did you know that the speed parts industry began way back in the Model T era? It's true. As soon as vehicles were mass produced, manufacturers were looking for ways to make them faster. Manufacturers, such as Roof, Rajo, Winfield, Miller, Frontenac, and Holley, made speed parts for 4-cylinder Model T engines and accomplished speeds of up to 100 mph! In Vintage Speed Parts: The Equipment That Fueled the Industry, veteran hot rod historian Tony Thacker looks at the history of hot rodding through the eyes of speed equipment manufacturers. Covered chronologically, the book begins with the early 4-cylinder engines. In 1932, Henry Ford introduced the flathead V-8, which was slow to be adopted as the engine of choice in racing until the parts industry caught up. Once it did, the flathead, although interrupted by the war, was the engine to run until the automobile manufacturers introduced overhead-valve V-8 engines in the late 1940s. Chrysler's early-1950s Hemi and Chevrolet's small-block V-8 in 1955 spelled the end for the flattie. Both mills dominated well into the 1970s, and the speed industry was there to support all platforms in spades. During that period, every auto manufacturer made a V-8 worthy of modification, and the speed industry boomed. Eventually, the speed equipment manufacturers grew to the point of becoming corporate entities, as mergers and acquisitions became the much less interesting story. Parts covered include special cylinder heads, magnetos, camshaft and valvetrain upgrades, downdraft carburetors, headers, multiple-carburetor setups, and even superchargers. Everyone figured out how to make engines more powerful, upgrading with the type of parts that were being produced decades later, even to today. Join in the fun of reviewing the history of speed through this fascinating tale of vintage speed parts.