Mighty 1969 Ford Mustang Boss 429 Unearthed on Bring a Trailer

• The Boss 429 Mustang comes with a full V-8 engine and makes no excuses.
• Just 850 fastbacks were produced for the 1969 model year.
• This instance appears to be in excellent condition and features an impressive color scheme.

If the oil crisis of the 1970s was an approaching asteroid, then the latter part of the '60s represented a time when massive creatures roamed unchecked. Picture cars equipped with powerful V-8 engines boasting large displacements and high compression ratios—vehicles practically gulping down gasoline. For those who appreciated raw power, 1969 offered plenty to enjoy. Particularly for fans of Ford, there was one specific monster car that captured their attention above all others.

Here we have it: a large-engine, extremely powerful muscle car, a 1969 Ford Mustang Boss 429, and this particular one is up for sale on Bring a Trailer (which, like Car and Driver This model, which is part of Hearst Autos, boasts over 7.0 liters of V-8 engine power along with a 3.91:1 rear axle, making it an intimidating powerhouse capable of destroying tires easily. Appropriately enough, this T-rex is colored green.

Given that the main focus of the article seems to be the sizable engine, we'll begin with that aspect. With a displacement of 429 cubic inches, it was officially rated at 375 horsepower from the factory. Sure thing. At that period, advertised horsepower figures were frequently understated to keep insurance expenses reasonably low. As for the gearbox, it’s a four-speed manual unit, complemented by a limited-slip rear differential.

The Boss 429 was available for just two model years, specifically 1969 and 1970. This car was designed to meet NASCAR’s requirements for homologation with a 429-cubic-inch V-8 engine. An external Ford contractor named Kar-Kraft, known for their work on the GT40, took on the task of fitting this large engine into the front end of the Boss Mustangs. They likely employed what could be described as the world's biggest metaphorical shoe horn to accomplish this feat.

In addition to the large cubes, the Boss features an enhanced suspension system, power-assisted disc brakes at the front, along with robust hubs and rotors. This particular model comes in striking Black Jade green over black interior. When new, it had a price tag slightly under $5000—equivalent to around $40,000 today. At that time, this seemed like quite a deal; however, considering that it was roughly twice as expensive as a regular Mustang back in 1969, it certainly wasn’t cheap for its class.

Given that just 850 Sportsroof Boss 429 units were manufactured for the 1969 model year, and among them only 162 came in this particular shade of green, this vehicle stands out as quite uncommon. Reports indicate that it underwent a comprehensive rotisserie restoration over two decades ago and looks impressive as a result. This isn’t your typical daily ride; instead, it’s more suited for memorable outings due to its remarkable potency and fuel consumption. However, compared to dealing with something like an actual T-Rex, living with it is considerably less challenging. We’ve all witnessed Jurassic Park .

We have experienced a revival of muscle cars over the last ten years, thanks to models like the Dodge Challenger Hellcat and the current Mustang Dark Horse But Ford doesn’t actually produce ‘em like this anymore. This model wasn’t nicknamed the Boss for no reason.

The auction concludes on May 2nd.

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