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    1969 Ford Boss 429 KK1225 Fastback

    Consignment #: 9004 Sign In to View Price

    Vehicle to be offered for Auction sale August 14th – 16th, 2014 at Russo and Steele’s 14th Annual Monterey California Auction. Please contact us for more information.

    For hard-core “Blue Oval” performance fans, nothing compares to the Boss 429 Mustang. Created and released for just one purpose – to homologate Ford’s hot new Boss 429 engine for NASCAR Grand National competition – the “Boss Nine” was essentially hand-built by Ford subcontractor Kar Kraft of Brighton, Michigan. Each car was assigned its own NASCAR ‘KK’ identification number. Because of the urgency of the program, the first 50 production vehicles are regarded as “prototypes” and were hand-built with unique ‘KKX’ and ‘XE’ designated parts not found on later-built vehicles. These priority vehicles were invoiced through Shelby American (Ford DSO 892000).

    Extensive modifications to the Mustang’s basic chassis were required to accommodate the big Boss, including the cutting and relocation of the front shock towers. A complete package, the Boss 429 included such special high-performance features as a stout “Toploader” close-ratio four-speed transmission, 9-inch Traction-Lok rear end, 3.91:1 gears, engine-oil cooler, trunk-mounted battery, competition suspension with front and rear anti-roll bars and staggered rear shocks, power front disc brakes, chrome Magnum 500 wheels, and fat F60 X 15 tires. Laughably, Ford rated output of the “street” Boss 429 Mustang at 375 hp, a figure that hardly explained the car’s ability to cover the quarter-mile in the 12-second range with only a few minor modifications.

    The most expensive Mustang of its era, the hairy Boss 429 was predictably rare when new, with just 859 built from mid-January to July 1969 for the 1969 model year (including two Boss-Cougars). Of those, the first 279 cars of the series are even more desirable, with their special “820-S” engines featuring heavy-duty NASCAR-spec connecting rods, beefy ½-inch rod bolts, and cross-drilled forged crankshafts. This outstanding example is one of the 279 original “S-Code” cars and bears Kar Kraft (KK) number 1225.

    Finished in Royal Maroon, NASCAR KK #1225, is the 11th priority-built car and retains its complete numbers matching drivetrain. KK 1225 also retains its original sheet metal including hand-modified shock-towers, fenders, and rear quarter panels. Its provenance is unparalleled: 3 factory build sheets, 2 factory invoices, a window sticker by Kevin Marti, Kar-Kraft internal shipping logs, Ford internal engine build-sheet from the Lima engine plant, personal correspondence from Ford historian Lois Eminger, Ford 999 reporting, and Deluxe Marti Reports (2). The Boss includes authentically recreated chalk markings and other unique details of early-production Boss 429s. As such, KK 1225 stands as one of the earliest and most documented 1969 Boss 429s ever offered for public sale.

    Titled as a 1969 Ford Mustang



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