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The AMC straight-4 engine is a 2.5 L straight-four engine developed by American Motors Corporation (AMC) that was used in a variety of AMC, Jeep, and Dodge vehicles from 1984 through 2002. The 2.5 L I4 Jeep engine shared design elements and some internal components with the AMC 4.0 L I6 that was introduced for the 1987 model year.
The AMC 4.0 engine saw extensive application in XJ Cherokees and Wagoneers, Grand Cherokees, and Wranglers, and many of those engines saw (or are seeing) extremely long lives, quite a few exceeding 300,000 mi (480,000 km). Chrysler built the XJ Cherokee until the end of the 2001 model year in the U.S. and until 2005 in China.
The 4.0 L is one of AMC's best-known engines. [30] It was one of four AMC engines kept in production when Chrysler bought AMC in 1987. Chrysler engineers continued to refine the engine to reduce noise, vibration, and harshness. The last in the line of the AMC inline sixes, the 4.0 L is regarded as one of the best Chrysler 4x4 off-road engines. [31]
The Iron Duke I4 used by AMC in Jeeps from 1980 to 1983 used the standard small block Chevrolet bolt pattern bell housing. The later (1984-02) AMC I4 had the GM 60 degree V6/I4 bolt pattern, and this was retained for the life of the engine. AMC often used lighter duty transmissions with the four cylinder engines.
The AMC 327 V8 debuted in the 1957 Rambler Rebel, an early "muscle car" Engine bay of a 1963 AMC Ambassador with a 327 V8 four-barrel. The AMC 327 is similar to the 287, but displaces 327 cu in (5.4 L) due to the bore increase to 4 inches (101.6 mm). Unlike the 250, most 327s were produced with hydraulic valve lifters.
The AMC V8 engines, such as the 290 cu in (4.8 L) engine in one car was bored out to 304 cu in (5.0 L) and the 390 cu in (6.4 L) in the other to 397 cu in (6.5 L). The shop installed exhaust headers, eight-quart oil pans, oil coolers, hi-rise intake manifolds, racing camshafts with solid lifters and stronger springs, and larger carburetors.
AMC also offered a four-wheel drive cross-over version using the Spirit's bodywork, marketed from 1981 through 1983 model years as the AMC Eagle SX/4 and Eagle Kammback (1981–1982 only). Spirits were manufactured by AMC in Wisconsin and Ontario, as well as under license by V.A.M. in Mexico , where they retained the Gremlin name on the ...
The Ambassador is an automobile manufactured and marketed by American Motors Corporation (AMC) from 1957 through 1974 over eight generations, available in two- and four-door sedan, two-door hardtop, four-door station wagon as well as two-door convertible body styles.