This livestream begins at 1 PM ET on Friday 26 June. Once we're live, please…
Carroll Shelby famously called the first Mustang a secretary’s car. But the introduction of the K-code Hi-Po 289 and then the fastback gave him something to work with.
Rated 271 horsepower at 6000 rpm and 312 lb-ft of torque at 3400 rpm, the solid-lifter engine had been around since 1963, featuring 10.5:1 compression, a 600-cfm four-barrel carburetor, and a dual-point distributor. A $327.92 option, it was offered in all three body styles and remained the Mustang’s hottest engine until 1967. With Ford’s Toploader four-speed, this was the first performance Mustang, doing the quarter-mile in 14.7 seconds at 95 mph. Just 7273 were built in ’65.
[Editor’s Note: This story originally appeared as part of the 25 Greatest Mustangs cover story in the July/August issue of Hagerty Drivers Club magazine. You can find the other entries here.]