Posts Tagged: Boss 429
Six clean dyno pulls, then a seventh that ends in a bang, a flinch, and a very memorable shot of the shop floor. This stroked “Boss 557” build — a heavily reworked Ford Boss 429 — had already made 850 horsepower before a rushed decision to run a stock flywheel instead of a billet one caught up with it. The internets verdict is split between sympathy for the expensive loss and jokes about the cameramans reflexes. Watch to see exactly what a flywheel failure looks like up close.
A barn-stored 1968 Shelby GT500KR spent thirty years out of sight before selling for $495,000 at Barrett-Jackson’s Scottsdale auction, beating out two rare Boss 429 Mustangs and a $396,000 Hemi Superbird. See what else made Barrett-Jackson’s own list of the sale’s ten best-selling muscle cars, and why documented originals are commanding record money in 2026.
An amateur clip of a 1969 Boss 429 leaving a car show it just won has racked up over a decade of replays, with commenters returning specifically to hear its rough, high-cam idle one more time. Ford built the Boss 429 purely to homologate its 429 engine for NASCAR, reshaping the Mustang’s front end just to fit it. Add American flags and a nuclear plant in the background, and it’s become an unlikely, enduring favorite.
Rich Fairservis spent most of his life buying the cars he wanted, one at a time — and the result is a warehouse holding six Dodge Demon 170s making a combined 6,150 horsepower, plus a Viper from every generation ever built. Photographer Larry Chen was let inside to document it. One viewer even stumbled onto the building by accident, driving for Uber nearby. See what a lifetime of deliberate collecting actually looks like up close.
Ford rated this Mustang’s big block at just 375 horsepower, a figure almost nobody who drove one actually believed. Built to satisfy NASCAR homologation rules and assembled outside the factory by an outside engineering firm, this car packed race-bred internals most buyers never fully understood. Discover why enthusiasts still debate its real output decades later, and how a Hemi-inspired head design ended up under a Ford hood.
For the show’s 200th episode, V8TV sat down with three-time Indy 500 winner Bobby Unser next to the exact 1969 Ford Torino he drove to victory at Pikes Peak — a car built by Bill Stroppe, Holman & Moody, and powered by a Smokey Yunick-built Boss 429. Unser hadn’t seen it since 1969. Watch to hear him tell the story of a car, and a win, he clearly hasn’t forgotten.
Ford gave the Mustang II one final send-off in 1978, borrowing styling straight from its biggest rival to create the rarest trim of the whole generation. The King Cobra combined Trans Am-inspired graphics with a genuine 302 V8, a factory air dam unique to the model, and a fully-equipped price that pushed past $6,000. Read on to find out how one six-Mustang-II collector still had to go hunting for the one trim missing from his garage.
Rick Campbell spent fifteen years restoring this 1970 Boss 429, chasing exact factory accuracy rather than showroom shine — down to preserving its original California emissions equipment. That patience earned it one of only two Authenticity Awards ever given for the model, shared with a 1969 Boss Mustang rather than a fellow 1970. Built originally to homologate Ford’s 429 big block for NASCAR, this Grabber Blue example is as much a research project as a restoration. Watch the full walkaround.
Ford never really built the Boss 429 Mustang for customers. It existed to satisfy a NASCAR rulebook, and the engine was so large that Ford had to ship partly built cars to an outside contractor just to get it installed. Only 859 were completed for 1969, wearing almost no badging and none of the spoilers or louvers that marked the other Boss cars. Read on for what Ford was really doing, and why the factory rating was fiction.
Ford has spent six decades building genuinely different kinds of muscle cars, from the original 1964 Mustang that sold 400,000 units in its first year to Shelby’s race-bred GT350 and GT500, all the way to the homologation-only Boss 302 and Boss 429. Take the quiz and the real question isn’t which car is fastest – it’s which era of Ford’s muscle car identity actually matches how you’d drive. Here’s the history behind every option on the list.
This countdown of Ford’s greatest engines set off a wave of comments nominating everything from the bulletproof 300 straight-six to the underrated 351 Cleveland as glaring omissions. See which seven engines made the official cut, and judge for yourself whether the list holds up against a century of Ford engineering.
Dale and Phyllis bought their Boss 429 Mustang new on March 18, 1969, from a dealer in Memphis, and then did something almost nobody does: they kept every piece of paper that came with it. Nearly five decades and 21,400 miles later, the car crossed the block at Barrett-Jackson in Las Vegas still wearing its original drivetrain and carrying its window sticker. Read on for why that documentation is worth as much as the engine.