After years of delivering power to the Mustang and F-150, Ford’s Romeo Engine Plant has reached a historic milestone – the production of its 10 millionth engine.

The 10 millionth engine, a 4.6L 3-valve V-8, will be shipped to AutoAlliance International in Flat Rock, Michigan to be installed in a new ’10 Mustang GT.

The Romeo plant, converted from a tractor manufacturing facility, produced its first engine in 1990 – a 4.6L two-valve V-8. Today, the plant and its 1,000 employees manufacture V-8 engines along with many of their major components, including cast-iron and aluminum blocks, crankshafts, cylinder heads, connecting rods, and camshafts.

The plant operates two lines, one for high-volume and another for niche builds, including the hand-assembled 5.4L 4-valve supercharged engines for the Shelby GT500. The high-volume line builds 4.6L two- and three-valve V-8 engines and 4.6L 2-valve Flex Fuel V-8, delivering 140 engines an hour.

The Romeo engines are shipped to plants in Michigan, Ohio, Kentucky, Missouri, and Canada to power Mustang, F-150, Econoline, Explorer, Crown Victoria, and Grand Marquis models.