GM 122 engine

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General Motors produced a plain Overhead valve straight-4 engine for the J-body compact cars and S-series trucks. Displacement ranged from 1.8 L to 2.2 L with turbocharged 1.8 and 2.0 L versions offered as well. The final version was known as the 2200, and lived on as the Vortec 2200, though the earlier models were never even named. The line was eventually replaced by the Quad-4 and Ecotec Family II in the late 1990s.

[edit] 2200

The 2.2 L version was revised in 1992 as the 2200 with multiport fuel injection, a new intake manifold, and larger valves pushed by a revised camshaft. This version increased power to 110 hp (82 kW) with 130 lb·ft (176 N·m) of torque, and allowed the idle rate to drop to just 600 rpm. Incremental improvements in engine power were made until the end of its life, with output reaching 120 hp (89 kW) when it was last used in 2002.