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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.
Later in the season, the Boss 429 engine was used by many of the teams, after it had finally been declared "officially homologated" by NASCAR president Bill France. The Boss 429 engine was homologated in the 1969 Ford Mustang Boss 429. In a very unusual move, Ford homologated the engine separately from the car in which it was to race.
Holman-Moody is an American racecar manufacturer, marine engine manufacturer and former auto racing team. The company currently operates out of Charlotte, North Carolina, but is no longer a race team. Holman-Moody continues to manufacture racing vehicles using vintage parts and methods, along with special editions of modern Ford sports cars. [1]
Holman-Moody began as a racecar owner operation but became more famous for their racecar building operation. Holman-Moody chassis featured improvements such as tube shocks, square tubing frames, and rear ends with floater housings (). They built around 50 race cars a year until Moody sold his portion of the company after the 1971 season.
A Holman and Moody specially prepared "stripper", which carried no sound deadener, undercoating, or any optional factory equipment, was used as the introductory press car in 1968. [ 31 ] The 428 Cobra-Jet had a compression ratio of 10.8:1 and was rated 335 bhp (250 kW) at 5200 rpm and 440 lb⋅ft (597 N⋅m) at 3400 rpm.
Later in the season, the Boss 429 engine was used by many of the teams, after it had finally been declared "officially homologated" by NASCAR president, Bill France. The Boss 429 engine was homologated in the 1969 Ford Mustang Boss 429. In a very unusual move, Ford homologated the engine separately from the car in which it was to race.
It was based on the Mustang SportsRoof model and replaced both the Boss 302 and the Boss 429 models. The Boss 351 engine was a 351 Cleveland four barrel engine with a mechanical cam, solid lifters, 11.0:1 compression ratio, aluminum intake, and a 4 bolt main bearing block. It was topped with an all-new 750 CFM Ford 4 barrel carburetor.
Additionally, a variety of performance packages were introduced that included the Mach 1, the Boss 302, and Boss 429. The two Boss models were to homologate the engines for racing. The 1969 Mustang was the last year for the GT option (although it did return on the third-generation Mustang for the 1982 model year).
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