NASCAR required a production run of 500 examples ... Super Cobra Jet in 1971 but unsurpassed for many years. The Mustang Boss 429 debuted in 1969. And much like the Boss 302, it had a unique ...

In the mid '60s, the action on NASCAR tracks was brutal ... Ford's race shop), transformed run-of-the-mill Mustang SportsRoof models into the famed Boss 429. Here's how it was done: A SportsRoof ...

The Boss 429 would have fit better in the larger production-model Torino, the car on which NASCAR teams based their Ford racecars. However, the Mustang was Ford's most popular sports car ...

Bill wanted a replacement. But by that point, the factory was installing the T-series Boss 429 and not the NASCAR-derived S-series as used in Bill's Mustang. Bill insisted on getting an S-series ...

A rare 1970 muscle car just stunned auction watchers by selling far above value, despite never turning a single competitive ...

Among the endless parade of classic Mustangs that have made their mark, the Boss 429 sits in a league of its own. This isn’t just another fastback with a stripe package—it was a NASCAR ...

One of only 499 units produced for the 1970 model year, this Ford Mustang Boss 429 spent decades in storage. Now it's a ...

Ford’s Boss 429-powered Mustang was a homologation special that allowed Ford to run its Chrysler Hemi competitor in NASCAR. Surprising no one, the engine bred for NASCAR’s superspeedways ...

Thus, the Boss 429 Mustang was produced for one reason, and one reason only: to homologate Ford's new engine for NASCAR competition. Ford was still struggling to compete with Chrysler's 426ci Hemi ...

A big banger Mustang with an extra-special engine and appeal. The Boss 302 had done its job in 1970 -- to win the Trans-Am championship for Ford -- and the Boss 429 had lived its life in NASCAR ...

The Boss 429 Mustang is all V-8 and no apologies ... It was built to fulfill NASCAR's rules on homologating the 429-cubic-inch V-8 for racing. Kar-Kraft, an independent Ford contractor that ...