Why Ford REFUSED to Put This Straight-Six in the Mustang

In 2002, Australian engineers built a rugged, cast-iron fleet engine designed to endure hundreds of thousands of miles in commercial taxis. Instead of remaining a humble workhorse, the Ford Barra straight-six evolved into one of the most durable, high-horsepower platforms ever manufactured, routinely outperforming flagship V8s and world-renowned Japanese performance icons. This documentary breaks down the complete engineering history behind the legendary Australian inline-six, from its humble 1960s American roots to its modern status as a four-figure dyno titan. We examine the exact architectural strengths that make the block nearly indestructible, investigate why Ford engineers were forced to intentionally restrict its factory output to safeguard showroom V8 sales, and unpack the packaging constraints and corporate decisions that ultimately prevented it from ever powering factory American muscle cars. Today, international engine builders and drag racers are reviving the platform across foreign chassis, redefining what is possible with factory bottom-end durability. This channel covers historic automotive engineering, forgotten performance icons, and deep technical analyses of the world's most fascinating combustion engines. Timestamps: 0:00 - Introduction: The 2,202-Horsepower Taxi Engine 0:56 - Call to Action 1:01 - Chapter 1: The LPG Taxi Fleet Origins 1:56 - Chapter 1: The Indestructible Iron Foundation 2:52 - Chapter 1: The Junkyard Secret 3:46 - Chapter 2: The Thriftpower Heritage 4:46 - Chapter 2: High-Flow DOHC Architecture 5:58 - Chapter 3: Humiliating the Flagship V8 7:33 - Chapter 3: Sandbagging and the Sprint Farewell 8:30 - Chapter 4: The Factory Weak Link 10:02 - Chapter 4: The Billet Fix and 8-Second Junkyard Passes 10:53 - Chapter 5: Going Global and the 2,202-HP Dyno Run 12:30 - Chapter 5: The 6-Second Pro Door Car and Billet Era 13:30 - Call to Action 13:39 - Chapter 6: The American Import Boom 15:29 - Chapter 6: The Skyscraper Problem and Dearborn Ego 16:55 - Conclusion: The Final Straight-Six and Viewer Challenge