The well-documented characteristics of the mighty 429-cubic-inch powerplant lurking under the hood of the Mustang Boss 429 do not need another deep dive. A quick synopsis should suffice before ...

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 ...

The Boss 429's signature hood scoop, larger than any other Mustang, is not on this car. The Boss 429 was a largely unadorned with a comparatively clean design for performance Mustangs of the time.

A new hood was developed employing functional cold ... Bob Leenstra's deep Black Jade Boss 429 fires easily before settling into a chesty "chug-chug-chug" idle that indicates pure, unmitigated ...

the free-breathing leviathan hiding under the hood was more powerful than that. Sanctioned by Ford and built by Classic Recreations, the continuation series of the Boss 429 Mustang is even wilder ...

The film car clearly shows an automatic transmission — a feature unavailable on the homologation Boss 429. Other discrepancies include hood pins, which were available on the '69 Mach 1 but ...

The Boss 429 Mustang is all V-8 and no apologies. Only 850 fastbacks were made for the 1969 model year. This example looks to be in fantastic shape and boasts a great color combination.

By 1969, the Ford Mustang could be anything from a dressy six-cylinder coupe to a high-powered Boss 429 fastback with a NASCAR-ready V-8 engine shoehorned under its scooped hood. It’s that ...

The big car was made fast by the stout 351 V-8 under the hood. Filled with a ... In fact, the performance of the Boss 351 was only a tick under the previous Boss 429 Mustang!