Ever wanted to own a piece of pure American muscle car history? This 1970 Ford Mustang Boss 429 is more than just a car; it’s a legend. This Mustang was a homologation special, built so Ford could use its powerful engine in NASCAR. This is one of those cars that you just know has a story, a story that starts with a purpose-built engine and ends with a lucky new owner. This specific car has a beautiful Grabber Blue finish and a history that includes a long-term original owner. Its recent refurbishment makes this Boss 429 a standout.
Power and Performance of the Boss 429
Under the hood of this iconic car lies the heart of a beast. The Boss 429 engine, a powerful 429ci V8, was originally rated at 375 horsepower and 450 lb-ft of torque. It features magnesium valve covers and aluminum cylinder heads. These heads have unique partially hemispherical combustion chambers. The engine is also equipped with a four-barrel Holley 735-CFM carburetor. This powerhouse pairs with a four-speed close-ratio manual transmission. This setup delivers power to the rear wheels. The top-loader transmission sends power to a 9″ rear end. It is equipped with a 3.91:1 Traction-Lok differential. This car also has the Competition Suspension and Drag Pack equipment. This means it was built for serious performance. The clutch and flywheel were recently replaced in 2025. This ensures a smooth and powerful feel when you shift.
Iconic Exterior Design
The exterior of this Mustang Boss 429 is a true head-turner. It is finished in its factory Grabber Blue shade, which was repainted in 2012. The car features a matte-black hood scoop that looks aggressive. There is also a front lip spoiler for a sportier stance. Chrome bumpers and color-keyed mirror housings add to its classic look. An integrated rear lip spoiler completes the design. The 15″ Magnum 500 wheels wear raised-letter Goodyear Polyglas GT F60-15 tires. These tires were mounted in 2025. It comes with power-assisted steering. The car also has power-assisted front disc brakes for solid stopping power.
A Cabin Built for Driving
Inside, the cabin is a mix of sportiness and simplicity. High-back front bucket seats are upholstered in white Corinthian vinyl. The seats have knitted inserts for added comfort. Faux wood trim adds a touch of classic style to the dashboard. The center console provides a convenient place for your gear. An AM/FM radio provides entertainment. The Hurst shifter feels great in your hand. Rubber floor mats protect the carpet. A heater keeps you warm on cooler days. The radio was also recently repaired in 2025. The rim-blow steering wheel is a great detail. It frames an 8k-rpm tachometer and a 120-mph speedometer. Gauges for coolant temperature and fuel level are also there. The five-digit odometer shows just over 49,000 miles.
Unique Features and History
This particular Mustang Boss 429 is serial number KK2131. Kar Kraft of Brighton, Michigan, performed the production for Ford. It remained with its first owner until 1989. This long-term ownership speaks to the car’s quality. A space-saver spare and a jack are fitted in the trunk. The trunk-mounted battery helps with weight distribution. This car also comes with a Deluxe Marti report. This report documents the factory colors and equipment. It also confirms the production date of September 16, 1969. The engine is stamped to match the car’s serial number. The car’s history and provenance are well-documented.
Summary
This 1970 Ford Mustang Boss 429 is an incredible piece of automotive history. It’s a rare and powerful car that was built for one purpose: speed. With its beautiful Grabber Blue exterior and well-kept interior, it is a stunning example. The powerful 429ci V8 engine and four-speed manual transmission provide a thrilling ride. Its unique history and recent service make it an excellent choice for any enthusiast. This is a chance to own a true American muscle legend.
Disclaimer: This article is for informational and entertainment purposes only. The information provided is based on market trends and personal opinions and should not be considered financial or investment advice. Readers should always conduct their own research and consult with a professional advisor before making any decisions.
Source & Details: bringatrailer.com
