The 1969 Ford Mustang Boss 429, code-named Job 1, used a cast iron block with cylinders bored to 4.36 inches in diameter and a forged steel crankshaft with 3.59 inches of stroke.

The Boss 429's signature hood scoop, larger than any other Mustang, is not on this car. The Boss 429 was a largely unadorned with a comparatively clean design for performance Mustangs of the time.

Perception and reality are often widely disparate things. That couldn't be truer than with the legendary Boss 429 Mustang and the semi-hemi engine for which it was named.

It’s an updated version of the factory 385-series block that spawned the original Boss 429, which had four-bolt mains and a denser iron composition when compared to the standard 429/460 design.

The '69 Mustang 429 Isn't Your Next Bargain Deal If you’re hoping to snag a Boss 429 for the same money as a run-of-the-mill Mach 1, it’s time for a reality check. The Boss 429 isn’t even in ...

Some 857 '69 Boss 429s were built—or 858, depending on your source—and just 498 '70 models were finished—or 499, again depending on who you believe—before the Boss 429 program ended.) ...

The Mustang Boss 429 is one of the most legendary American muscle cars ever made. Ford built just 1,359 examples between 1969 and 1970, making this garage find a rare gem, but its history doesn ...

The Boss 302 remained in production through 1970, selling 8,641 units. The second Boss model was designed to homologate a new 429-cubic-inch (7.0-liter) V8 engine for NASCAR.

This Grabber Blue 1970 Boss 429 is the one and only 1970 Boss 429 to date that has ever won an Authenticity Award in Mustang Club of America judging. That's the major reason Rick Campbell wanted ...

The previous 1970 Boss 429 record was set in January 2025 by a Calypso Coral unit that sold for $467,500. The record-setting fastback is one of four Boss 429s auctioned off at Indy 2025.

The Boss 429 was offered with completely different color options each year, however, all of the interiors were black only, per Motor Trend. 1969 saw the car covered in Raven Black, Wimbledon White ...

The Boss 351 was only available for the year 1971 and was slotted under the Boss 429. As the name suggests, it features a 351 cubic inch V8 engine, mated to a 4-speed manual transmission sending ...