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70 BARRETT-JACKSON EXPERIENCE FALL 2024The Boss 429 went on to dominate the 1969 NASCAR season, boasting 26 wins, and likely would have continued its winning streak if not for a leadership change at Ford. The departure of Bunkie Knudsen, the executive driving Ford%u2019s stock car racing push, led to the program%u2019s demise. Fortunately, the Boss 429%u2019s accolades remain well-documented, cementing its place in history.Ford%u2019s Boss 429 engine was groundbreaking for the time, featuring a hemispherical %u201ccrescent%u201d combustion chamber similar to Mopar%u2019s HEMI engine, a departure from Ford%u2019s traditional designs. The engine%u2019s magic lay in its aluminum cylinder heads, which featured separate cooling circuits for the heads and engine block, resulting in a more efficient cooling system with fewer hotspots. Although officially rated at 375 horsepower and 450 ft/lbs of torque, it%u2019s believed the engine produced more power. Its size necessitated several modifications to fit under the hood, including redesigned shock towers, a thinner power brake booster and a relocated battery.Further modifications enhanced the Boss 429%u2019s handling. The control-arm positioning was widened and lowered for improved cornering, while the restructured shock towers were braced to the cowl. Heavy-duty shocks and sway bars were added. Power front disc brakes came standard, and the four-speed Toploader manual transmission was the only option, featuring a close-ratio configuration and a Traction-Lok differential with a rear gear ratio of 3.91. The 1969 Boss 429 featured a subtle chin spoiler, faux rear quarter scoops, and options for a decklid spoiler and rear window louvers. Its most distinctive feature was the fully functional wide hood scoop. A total of 857 Boss 429 Mustangs were sold in 1969. Though it has never reappeared in Ford%u2019s lineup, the Boss 429 has secured an enduring legacy, captivating enthusiasts with its combination of NASCAR victories, stylish design and overall appeal.The 1969 Boss 429 offered at the Scottsdale Fall Auction is powered by its matching-numbers engine, which was rebuilt in 2014, and includes its matching-numbers transmission and original rear end. This Boss is finished in Wimbledon White over a black bucket-seat interior, making it one of 271 with those appointments. Other highlights include a black Clarionknit vinyl interior, high-back bucket seats with console, Deluxe Interior Decor Group, Visibility Group, colorkeyed racing mirrors and 15-inch Magnum 500 wheels wrapped in Cooper Cobra radial tires. This example was sold new at Bob Murphy Ford in Morton, Illinois, and wears Kar Kraft No. KK1853. Documentation included with the sale includes reproductions of the original Window Sticker and factory invoices, an Elite Marti Report, documentation on the 2014 engine rebuild, and the original date-codecorrect exhaust manifolds and smog pump/equipment. Register to bid today for a chance to take home %u201cthe boss%u2019s car.%u201d %u2013 Nicole Ellan James For up-to-date information on this vehicle, visit Barrett-Jackson.com