From its 1965 introduction to its production supersession by the improved Mark V engine in 1991, the big-block Chevy Rat has carved its mark in virtually every form of racing, becoming in the process ...

"There's no replacement for displacement!" This has been the battle cry of big block fans everywhere, and for good reason. A Chevy big block brings the thunder, whether you're roasting tires with a ...

Unlike most of its competitors, the Chevrolet Mark IV Rat motor was designed from the beginning to be a high-performance race engine, with the initial Daytona "Mystery Motor" configuration merely ...