It all began in 1965 ... well, 1961. At that time, Chevrolet called it the Z-11. Some people called it the "Mystery Engine," and later they called it the offshoot that produced the 348 "truck" engine.

The Ford and Chevy 427 big blocks sit at the center of one of performance history’s fiercest rivalries, yet the two engines followed very different paths from the dyno cell to the winner’s circle. I ...