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Each car was given a "KK" number which stood for Kar Kraft. KK #1201 was the first Boss 429 and KK #2558 was the last Boss 429 made. [5] However, sales started to drop off for the 1970 Boss 429 Mustangs and with higher production costs and other internal Ford problems, it was decided that 1970 would be the last year of the Boss 429.
The Boss 429 Mustang debuted in January 1969. It was built primarily to allow Ford to campaign the special engine in the NASCAR racing circuit. NASCAR's rules stated that for any "trick" part or engine to be considered legal, it had to be installed on at least 500 cars that were sold to the public. The Boss 429 engine was rated at over 370 hp.
When the world met the 1969 Mustang Mach 1, it fell instantly in love. The grill-heavy beast stayed in production for nearly a decade. ... Boss 429. Like the Boss 302, the Boss 429 was born out of ...
A 1969 Ford Mustang Mach I and a P-51 Mustang Executive stylist John Najjar , who was a fan of the World War II P-51 Mustang fighter plane, is credited by Ford with suggesting the name. [ 10 ] [ 11 ] Najjar co-designed the first prototype of the Ford Mustang known as the " Ford Mustang I " in 1961, working jointly with fellow Ford stylist ...
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The Mach 1 proved popular with buyers with 72,458 cars sold through 1969. [66] The Boss 302 was created to satisfy Trans Am rules and featured distinctive hockey-stick stripes, while the understated Boss 429 was created to homologate the Boss 429 engine (based on the new Ford 385 series engine) for NASCAR use. The two Boss models received fame ...
The top option was the 429 SCJ (Super Cobra Jet), rated at 375 hp (280 kW), and was part of the "Drag Pack" option. Selecting the "Drag Pack" option turned a 429 CJ into a 429 SCJ. The drag pack required either the 3.91:1 or the 4.30:1 axle ratio, and included a 4-bolt main engine block, forged pistons, 780 CFM Holley carburetor, engine oil ...