The “big block” Boss 429 arrived in mid-1969 as a way to homologate the “semi-hemi” 429-cubic-inch V-8 engine for both NASCAR and NHRA drag racing. A minimum of 500 examples needed to be produced for public consumption in order to run the engine in series racing. Only 499 cars were produced, and the Boss 429 is one of the most iconic and revered muscle cars from the classic era, known for its raw power and rarity. Overall, the 1970 Mustang Boss 429 is a testament to Ford’s commitment to performance and innovation during the muscle car era, leaving a lasting legacy among classic American cars, which makes the Boss 429 a rare and highly coveted collector’s item. Each car was meticulously hand-assembled by Kar Kraft, a specialty firm contracted by Ford, ensuring precision and performance.

The centerpiece of the Boss 429 is its massive 429 cubic inch (7.0-liter) V8 engine, which was a NASCAR homologation special. The engine was rated at 375 horsepower, though many believe it produced more than 500 horsepower. It featured free-flowing cylinder heads, a high-rise intake manifold, a Holley four-barrel carburetor, 4-speed manual transmission, and a 3.91:1 rear axle ratio.

RB Collection is very pleased to offer this wonderful example of a rare and highly desirable 1970 Ford Mustang Boss 429 with all original documentation, including Build Sheet, Invoice, Owner’s Manual, and standard Marti Report.

Bought new as a special order from Tower Ford, Inc., this iconic car is extremely sound and a great driving example. Preserving all original features, this Boss 429 is presented in mint condition with an attractive Grabber Blue paint, over White Clarion interior. The original upholstery, carpeting, and door panels are in excellent condition.

Fastidiously maintained in superb condition and stored in a climate-controlled environment, it is sure to make a statement in the collection of its fortunate next owner. The 1970 Mustang Boss 429 is a standout example of American muscle, blending formidable power and distinctive styling, and remains a pinnacle of collector desirability and automotive innovation.