The Jeep Wagoneer was an early sport utility vehicle (SUV), produced under varying marques from 1963 to 1991. It was noteworthy for being in production for more than 28 years with only minor mechanical changes. An overhead cam engine, along with independent front suspension (both later discontinued), supplemented with features unheard of in any other 4WD vehicle (including power steering and automatic transmission), made it revolutionary at the time. A solid front axle was available as well. Compared with offerings from International Harvester and Land Rover — which were producing utilitarian work-oriented vehicles that were quite spartan and truck-like on the inside — the Jeep Wagoneer was the first true luxury 4x4. The Jeep Wagoneer is based on the Jeep SJ platform. It debuted seven years (24 years in the United States) before the Land Rover Range Rover. It was also one of the last few vehicles sold in the United States that still used a carburetor, well after most other vehicles had switched to fuel injection. Only Isuzu with its base-model pickup truck would hold out longer, selling its last carbureted vehicle in 1993.
In early 1963, Willys Motors changed its name to Kaiser Jeep Corporation. This was to associate Jeep in the public consciousness with Kaiser's family of companies, said company president Steven Girard. Early Wagoneers were powered by Willys' new 140 hp (104 kW)"Tornado" SOHC 230 CID (3.8 L) inline six-cylinder engine, which had debuted in 1962 as an option for Jeep's older-style station wagons. Although quite fuel-efficient for its day, it was prone to cooling problems, and also "pinging" at higher altitudes, which led to the introduction of a lower-compression 133 hp (99 kW) version in 1964.
There were few other changes for 1964, except for the option of factory-installed air conditioning.
Source: Wikipedia, 2012