A unique example of Ford Mustang history is offered here in the muscular form of this Raven Black 1969 Boss 429 fresh from long-term ownership in a private collection. Built to homologate the new 429 “semi-hemi” engine for NASCAR, the Boss 429 was the most powerful Mustang offered by Ford and one of the rarest and most brutish muscle cars ever.

The engine, intentionally under-rated at 375 horsepower, packed a forged steel crank, NASCAR rods, 4-bolt main-bearing caps and large-valve aluminum heads with crescent-shaped combustion chambers. A ram air-induction system was fed by a 735 CFM Holley carburetor atop an aluminum high-rise intake manifold. The sheer size of the 429 necessitated extensive reworking of the car’s front suspension and engine bay, widening the car’s front track and improving the steering geometry in the process.

Additionally, an oil cooler was added and the battery moved to the trunk. All Boss 429s were equipped with Competition Suspension including a ¾-inch front sway bar, power steering and brakes with front discs, a Hurst-shifted close-ratio 4-speed and 3.91:1 Traction-Lok rear end, a front spoiler, Magnum 500 wheels with Polyglas tires and a manually controlled hood scoop. One of 857 Boss 429s built in 1969, this Raven Black beauty, Kar Kraft No. 1317, retains its original matching-numbers engine.

It has been kept in climate-controlled storage by the same caring owner since 1999, and has been driven just 1,650 miles since a concours-quality restoration in the early ‘90s. The interior features the Deluxe Décor Interior Group including wood-grain dash, door and console trim, Comfortweave bucket seats, a deluxe 3-spoke Rim-Blow steering wheel, special speedometer, and an in-dash clock. Source: www.mecum.com