The Boss badge, a legendary emblem in Mustang history, marked its debut in 1969 with not one, but two high-performance models. Both were meticulously engineered for racing homologation.
While the Boss 429 reigned supreme with its colossal 429-cubic-inch V8, generating a staggering 375 horsepower, its purpose was solely to qualify the engine for NASCAR. This behemoth eventually powered the championship-winning Ford Torino Talladega.
In contrast, the Boss 302, equipped with a 302-cubic-inch V8 producing 290 horsepower, was a different beast altogether. Designed to comply with the stringent SCCA Trans-Am regulations, it represented Ford’s answer to the formidable Chevrolet Camaro Z/28.
Unlike its big-block sibling, the Boss 302 homologated the entire car for the Trans-Am series. Both Boss variants were discontinued in 1971 as the golden age of muscle cars waned, but the legacy lived on with the Boss 351 released that same year.
Despite its limited homologation intentions, it packed a punch with a unique, high-performance version of the 351 Cleveland V8. This “R-Code” engine boasted 330 horsepower, making it the second-most powerful Mustang of 1971, trailing only the Cobra Jet. This particular Raven Black fastback is one of only 46 finished in that color, and it appears remarkably original.
The Boss 351 decals are in place, the Ram Air hood is present, and a true 351 Cleveland sits beneath it. While the originality of the drivetrain is uncertain, the current owner claims the engine now produces over 400 horsepower, hinting at modifications by a previous owner.
Paired with a four-speed manual and the original rear axle, this Boss 351 promises a thrilling driving experience with the added muscle of a souped-up powerplant.
