Legacy Metrics

1969 Ford Mustang Boss 429

9F02Z198745roadUnited States
Engine
7.0L (429 cu. in.) V8, all-forged internals, rated ~375 hp (estimated 500+ hp actual)
Colour
Wimbledon White

A 1969 Ford Mustang Boss 429, one of the homologation specials built to qualify the 429-cubic-inch 'Boss' engine for NASCAR competition. Finished in Wimbledon White with a black knit vinyl interior, this example retains its original engine and four-speed manual gearbox and appears never to have undergone a full restoration. Documentation includes a Deluxe Marti Report confirming production history and a casting-number reference board.

Ownership

  1. —Auction sale
    Estimate US$240,000 – US$280,000

    RM Sotheby's catalogue lot →

Competition

No competition history extracted from the catalogue.

Maintenance & restoration

No maintenance or restoration records.

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How this record is sourced

Each chassis record is compiled from public auction archives and links to its source material. Ownership, competition and maintenance entries are extracted from those catalogue listings by an LLM, which can make mistakes — please contact us with any corrections. The summary is Legacy Metrics’ own writing; we do not reproduce catalogue text.

“Full” and “partial” documentation labels indicate how well each entry is corroborated in the underlying sources, not an audit of the car’s physical paperwork. Names of recent or living owners are withheld for privacy.