The first year of the big block Shelby Mustang debuted in 1967 when Ford installed a 390cid V8 engine in the standard GT model. It opened the path for Carroll Shelby to take the whole concept a big step further by offering a 428cid dual-quad big block to hide

The first year of the big block Shelby Mustang debuted in 1967 when Ford installed a 390cid V8 engine in the standard GT model. ... more