Stock Boss 429's ran right on the 14-second mark, rolling through the quarter a shade over 100 mph. Impressive, but not when you consider what could have been.

Leading the muscle car charge was the Boss, the racing-inspired high-performance version of America’s auto sweetheart, the Ford Mustang. It was launched in 1969 to drive a stake into the Chevy ...

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.) ...

Posted: September 19, 2024 | Last updated: March 15, 2025 Few rivalries in American automotive history are as storied and intense as that between Ford's Boss 429 and Chrysler's 426 Hemi engines.