AMC straight-6 engine

The AMC straight-6 engine is a family of straight-six engines produced by American Motors Corporation (AMC) and used in passenger cars and Jeep vehicles from 1964 through 2006. Production continued after Chrysler acquired AMC in 1987. American Motors continued to use the Rambler straight-six engine initially designed by Nash Motors. It was redesigned as an OHV for the 1956 model year. This engine was discontinued in 1965. American Motors introduced a completely new I6 design in 1964. This engine evolved in several displacements and underwent upgrades. Vehículos Automotores Mexicanos (VAM) also manufactured this family of six-cylinder engines, including two versions available only in Mexico. A new 4.0 L engine was introduced by AMC in 1986 for the 1987 model year Jeep Cherokee (XJ) and became the final version of AMC's inline sixes. It is regarded as one of the best 4x4 and off-road engines. This engine was produced by Chrysler through 2006. Among "classic American engines, the AMC straight-six stands as a testament to smart engineering and enduring performance".