Ford NAA tractor

The Ford NAA tractor is an agricultural tractor that Ford introduced in 1953 as an entirely new model, sold as the Golden Jubilee under 50th-year badging. It replaced the N-series tractors and was the first tractor Ford built after losing its court battle with Harry Ferguson in 1952 over the patents behind the Ferguson System three-point hitch. Under the hood sat a 134 cubic inch overhead-valve inline four-cylinder gas engine rated at 32 horsepower, known as the Red Tiger. A four-speed transmission was standard, and because the hydraulic pump was driven by the engine rather than the power take-off, the hydraulics worked without the PTO engaged. A live PTO was optional, and a kerosene-burning version called the NAB found few buyers. For 1954 the tractor carried over without the Golden Jubilee badging, and the three-digit 600 and 700 series that followed improved on it.