The Boss 429 and 429 Super Cobra Jet V8 engines rank as some of the most powerful engines ever put in the Ford Mustang. In fact, if we limit our discussion to first-gen Mustangs, these engines ...
In the late 1960s, the Boss 429 was born out of the necessity of homologation ... Engineers had just ten months to design and build the new engine from scratch before the February 23 start.