The Model 66 Pierce-Arrow holds a revered status among Brass Era cars, comparable to the Bugatti Type 41 La Royale in the Classic Era. It was the epitome of size, grandeur, and power during its time and is considered the ultimate treasure for contemporary car collectors.
The name “66” represented the engine’s rated horsepower, which was an enormous inline six-cylinder engine that debuted in 1910 with a massive displacement of 714 cubic inches. By 1912, the engine grew even larger to nearly 825 cubic inches, while its horsepower rating approached 100. Its long stroke design generated immense torque necessary for propelling the massive chassis and luxurious coachwork that were customary for this model. Guinness World Records once recognized it as having the largest engine ever installed in a production car.
Between 1910 and 1918, approximately 1,250 Model 66s were manufactured.
Source: RM Sotheby’s
