What happened to Mopar’s heavy-duty dual-clutch transmissions?

62TEM or 79REM transmission

Back in the days when there was still a Chrysler Corporation, engineers started working an a manual transmission that shifted itself—a dual-clutch automatic of the style later produced by Fiat, Ford, and others. At the time, such transmissions had never been successfully used in light-duty vehicles, but were used by heavy-duty trucks. The transmission was … Read more

Inside the “Firefly” or “T4” GSE 1.3 turbo engine

T4 1.3 turbo GSE engine

Years after Fiat and Chrysler came together, a team of engineers from nearly every part of the country, including Americans, Italians, and Brazilians, came together to create brand new small (GSE) and medium-sized (GME) four-cylinder engines. The acronyms stand for “Global Small/Medium Engine;” in Brazil, the GSE is marketed as the FireFly. The first of … Read more

B (as in “big”) V8 engines

300G cross-ram wedge engine

Despite our headline, the B in “B engines” did not mean “big.” The creation story Chrysler’s first V8 engines (such as the 392 shown below) were a success, but they were only intended for high-end, relatively pricey cars. As more and more customers demanded eight cylinders, though, Chrysler Corporation could not make enough of their … Read more

Chrysler turbos of the 1990s

Chrysler 2.2 Turbo III

In the 1980s, Chrysler took its around-90-to-100 horsepower 2.2 liter four-cylinder engine and pushed it to 142, then 150, and finally 174 horsepower, topping at an impressive 210 pound-feet of torque—all quite good for an engine never designed for such treatment. How could they beat that in the 1990s, while improving what they already had? … Read more

Mopar turbos of the 1980s

The first generation of turbocharged Mopars were not part of the executives’ original plan, but they were tough, well-engineered, efficient, and, with the Turbo IV of the 1990s, innovative enough that modern turbos follow in their path. All were four-cylinders, from the same family, made in two displacements (one was mildly stroked). The more powerful … Read more

Slant Six, the unlikely rock star

1960 Slant Six

In the late 1950s, Chrysler engineers, wrapping up work on its last V8 engine families (until 1999), started working on a new six-cylinder. It would become a legend—but it may not have come at all, had things been just a little different. Slant six development story Chrysler’s first V8 engines, developed after World War II … Read more

Original Hemi V8: dual-rocker powerhouses

Chrysler 1957 392 Hemi FirePower V8 engine

Chrysler Corporation was not by any means the first company to use hemispherical heads in their engines, but they are probably the ones best known for them, because of their high production and their high performance… and because they trademarked the term “Hemi™.” Ironically, the original Hemi engines were eventually stripped of their distinctive hemispherical heads, … Read more

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