GM 122 engine

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General Motors produced an overhead valve (from 1983–1994, a SOHC version was available) 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, 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.

1.8 L OHV

The 1.8 L pushrod engine was the first engine to power the J Body cars. Introduced with the models in 1982, the 1.8 used a 2-barrel Rochester Carburetor and produced an output of 88 horsepower (66 kW), at higher RPM. Acceleration in these cars was quite sluggish, with a test 1982 Pontiac J2000 accelerating from 0–60 mph in 16.3 seconds, with a quarter mile (~400 m) time of 20.6 seconds.

Uses:

• 1982 Chevrolet Cavalier
• 1982 Pontiac J2000
• 1982 Buick Skyhawk
• 1982 Oldsmobile Firenza
• 1982 Cadillac Cimarron

1.8 L SOHC

In 1983, a 1.8 L SOHC version, imported from GM of Brazil, was added. Replacing the 1.8 and 2.0 L OHV engines in the Pontiac 2000 and supplanting the Firenza and Skyhawk's 2.0 L engine, it used throttle body injection, producing 84 horsepower (63 kW). For 1984, a turbocharged version was added. This version used multi-port fuel injection (MPFI), and produced 150 horsepower (110 kW). The 1.8 L SOHC was not used in the Chevrolet Cavalier or Cadillac Cimarron, and was replaced by the 2.0 L SOHC in 1987.

Uses:

• 1983–1986 Pontiac (2000) Sunbird
• 1983–1986 Buick Skyhawk
• 1983–1986 Oldsmobile Firenza

2.0 L OHV

A bored and stroked version of the 1.8 L engine, displacing 2.0 L, was introduced midway through 1982, to provide more low-RPM power for the J cars. This engine was also used in the Chevrolet S-10 and GMC S-15 compact pickup trucks and their Blazer and Jimmy counterparts until 1985, when they were replaced by the 2.5 L Tech IV engine. Using a 2-barrel carburetor, this engine produced 88 horsepower (66 kW) in the J cars, and 83 horsepower in the S-Series trucks. For 1983, this engine replaced the 1.8 L engine altogether and, for the J cars only, gained throttle body fuel injection, producing 86 horsepower (64 kW). This engine was used until 1989, producing 90 horsepower (67 kW) and 108 lb·ft (146 N·m) of torque when it was discontinued.

Uses:

• 1982–1983 Pontiac J2000 (called just "2000" in 1983, 1.8 L SOHC became standard after 1983)
• 1982–1989 Chevrolet Cavalier
• 1982–1988 Oldsmobile Firenza
• 1982–1983 Buick Skyhawk (1.8L SOHC became standard after 1983)
• 1982–1986 Cadillac Cimarron
• 1982–1984 Chevrolet S-10
• 1982–1984 Chevrolet S-10 Blazer
• 1982–1984 GMC S-15
• 1982–1984 GMC S-15 Jimmy
• 1987–1989 Chevrolet Corsica, Chevrolet Beretta, Pontiac Tempest

2.0 L SOHC

A bored and stroked version of the 1.8 L SOHC was released in 1987, displacing 2.0 L. Still utilizing throttle body fuel injection, this engine produced 96 horsepower (72 kW). Torque stood at 118 lb/ft. As with the 1.8 L engine, a turbocharger was optional. Utilizing multi-port fuel injection (MPFI), power was up to 165 horsepower (123 kW). Torque was 175 lb·ft (237 N·m). The turbocharged version was dropped after the 1990 model year, and MPFI replaced the throttle body Injected version for the 1992 model year, increasing horsepower to 110. The 2.0 L SOHC was dropped after 1994, replaced by the 2200 SFI.

Uses (Naturally Aspirated Version):

• 1987–1994 Pontiac Sunbird
• 1987–1989 Buick Skyhawk
• 1988–1991 Pontiac LeMans GSE Hatchback
• 1987–1988 Oldsmobile Firenza

Uses (Turbocharged Version):

• 1987–1990 Pontiac Sunbird
• 1987–1989 Pontiac Grand Am SE

2.2 L OHV

For the 1990 model year, GM replaced the 2.0 L engine with a bored and stroked version, displacing 2.2 L. Known as the 2200, it uses throttle body fuel injection, and produces 95 horsepower (71 kW) and 120 lb·ft (163 N·m) of torque. For 1992, multi-port fuel injection replaced the old throttle body injected version, increasing power to 110 horsepower (82 kW), and torque to 130 lb·ft (176 N·m). In 1994, the MPFI system was updated to SFI, and power increased to 120 horsepower (89 kW) with torque increasing to 140 lb·ft (190 N·m). A final revision to the 2200 SFI came in 1998, when emissions updates were done, lowering power and torque to 115 horsepower (86 kW) and 135 lb·ft (183 N·m), respectively. The 2200 was discontinued after 2002, replaced by the 2.2 L Ecotec engine for 2003.

Uses:

• 1990–2002 Chevrolet Cavalier
• 1990–1996 Chevrolet Corsica and Beretta
• 1990–1991 Pontiac Tempest
• 1993–1996 Buick Century and Oldsmobile Cutlass Ciera
• 1995–2002 Pontiac Sunfire

See also

• List of GM engines