Jeep CJ-8 Scrambler — Iron Duke (GM) Between 1981 and 1986 the CJ-8 Scrambler was equipped with GM's 2.5-liter four-cylinder engine best known as the Iron Duke.

Initially, the Scrambler's base engine was the relatively wimpy Iron Duke 151 cubic-inch I4, but a carbureted version of Jeep's stalwart 2.5-liter four-banger took over as the low-end option in 1983.

Jeep Scrambler Factory Engine Options. The Jeep Scrambler was offered with a variety of engines during its production run. From its 1981½ model year debut to 1983, the 151-cube GM Iron Duke four ...

Keep in mind this swap works with only the AMC 2.5L and not the earlier GM 2.5L Iron Duke engines, which have tin valve covers anyway. Here’s how we did it. See All 6 Photos ...

Not to be confused with the 2.5-liter GM Iron Duke engine (though the Duke looks very similar at first glance and was used in various AMC models and even some Jeeps), the 2.5-liter AMC four made ...

The result of this cut-and-paste engineering was a 2.5-liter pushrod straight-four engine that ran rough and sounded unpleasant but held together pretty well. Production of the Iron Duke ran from ...

The freshly redesigned sixth-gen 2019 Chevrolet Camaro was revealed today alongside welcomed news of a 1LE track package for the 2.0-liter turbo engine. To counter this good example of a four ...

Including the Iron Duke in the Scrambler lineup demonstrated Jeep valued a useful engine regardless of its origins from a competitor. Jeep Grand Cherokee (WK) — 5.7L Hemi V8 (Chrysler) LIAL ...