This wasn’t just a Mustang with a big engine—it was a re-engineered machine with a singular mission: go fast, stay fast. From day one, the Boss 429 was a unicorn. Ford only built 859 units in ...

While Chrysler installed the 426 Hemi in a variety of production vehicles, Ford shoehorned the Boss 429 into its 1969 Mustang ...

Even with a blank check, you'd be hard-pressed to find a vintage Mustang ... race their new engine in NASCAR. The 429 was meant to outshine Chrysler's 426 Hemi. Around 900 Boss 429 street cars ...

In 1969, Ford introduced a heavily updated Mustang ... 429-cubic-inch (7.0-liter) V8 rated 375 horsepower. The car was created specifically to homologate the said engine for NASCAR racing. The ...

Ford Mustang Boss 302 was a winner on the racetrack and showroom, providing the template for all Mustangs that followed.

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 ...

Is this the rarest Boss? An all-aluminum Can-Am 429ci. Tasca Ford owned the street with this car. Bring on Hemis and SS 396 Camaros. As one of six pre-production 1969 Ford Mustang Boss 429s ...