Over 60 percent of U.S. Army fighters during World War II were powered by the Allison V-1710 engine. It was a strong and reliable power plant that powered the pre-war generation of 400 mph Army pursuits, and the majority of Army combat fighters on through World War II. Even so, the V-1710 was controversial and often maligned, considered by some to have been a "second-rate" engine. Author Whitney's objective was to find, and tell, the true story of...