Ford had plenty of muscle competing in the '60s horsepower wars with the legendary 1969 Mustang Boss 429 – a NASCAR-bred 375-horsepower behemoth built to take on the likes of the Chrysler 426 Hemi.

The Ford Fairlane 427's engine was not a standalone option. It came as part of the "427-8V CID Engine Race Car Package," which also included a Toploader 4-speed manual transmission that could ...