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The 122 engine was designed by Chevrolet and was used in a wide array of General Motors vehicles. The ''122'' was similar to the first two generations of the General Motors 60° V6 engine; sharing
cylinder bore In a piston engine, the bore (or cylinder bore) is the diameter of each cylinder. Engine displacement is calculated based on bore, stroke length and the number of cylinders: displacement = The stroke ratio, determined by dividing the bore b ...
diameters and some parts . The ''122'' was available in the US beginning in 1982 for the GM J platform compact cars and S-series trucks. For the J cars, it evolved through 2002 when it was replaced by GMs
Ecotec Ecotec (capitalized ECOTEC, from 'Emissions Control Optimization TEChnology') is a General Motors (GM) and Opel Automobile GmbH (Opel) trademark that refers to a series of emissions technologies that were implemented throughout a range of GM engines ...
line of
DOHC An overhead camshaft (OHC) engine is a piston engine where the camshaft is located in the cylinder head above the combustion chamber. This contrasts with earlier overhead valve engines (OHV), where the camshaft is located below the combustion ch ...
4-cylinder The engine configuration describes the fundamental operating principles by which internal combustion engines are categorized. Piston engines are often categorized by their cylinder layout, valves and camshafts. Wankel engines are often categoriz ...
engines. In the S-10 related models, it evolved through 2003 and was known as the Vortec 2200. Production ceased consistent with the replacement of the S-series trucks with the GMT 355 sub-platform.


Generation I


1.8


L46

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 A carburetor (also spelled carburettor) is a device used by an internal combustion engine to control and mix air and fuel entering the engine. The primary method of adding fuel to the intake air is through the venturi tube in the main meter ...
and produced and 100 lb/ft of torque. Since peak hp and torque came on at higher RPM,
acceleration In mechanics, acceleration is the rate of change of the velocity of an object with respect to time. Accelerations are vector quantities (in that they have magnitude and direction). The orientation of an object's acceleration is given by ...
in these cars was quite sluggish, with a test 1982 Pontiac J2000 accelerating from in 16.3 seconds, with a time of 20.6 seconds. Applications: *1982 Buick Skyhawk *1982 Cadillac Cimarron *1982 Chevrolet Cavalier *1982 Oldsmobile Firenza *1982
Pontiac J2000 In astronomy, an epoch or reference epoch is a moment in time used as a reference point for some time-varying astronomical quantity. It is useful for the celestial coordinates or orbital elements of a celestial body, as they are subject to pertu ...


2.0


LQ5

A 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 replaced the 1.8 L engine altogether and had
throttle-body fuel injection Manifold injection is a mixture formation system for internal combustion engines with external mixture formation. It is commonly used in engines with spark ignition that use petrol as fuel, such as the Otto engine, and the Wankel engine. In a ma ...
. It produces , and 110 lb/ft of torque. Applications: *1983–1986 Buick Skyhawk *1983–1986 Cadillac Cimarron *1983–1986 Chevrolet Cavalier *1983–1986 Oldsmobile Firenza *1983–1985 Pontiac J2000/2000/Sunbird


LQ2

This engine was similar to the LQ5 however it did not use throttle body fuel injection, instead it had a 2-barrel carburetor. This engine was used in the
Chevrolet S-10 The Chevrolet S-10 is a compact pickup truck that was produced by Chevrolet. It was the first domestically built compact pickup of the big three American automakers. When it was first introduced as a "quarter-ton pickup" in 1981 for the 1982 ...
and GMC S-15 compact pickup trucks and their
Blazer A blazer is a type of jacket resembling a suit jacket, but cut more casually. A blazer is generally distinguished from a sport coat as a more formal garment and tailored from solid colour fabrics. Blazers often have naval-style metal buttons ...
and
Jimmy Jimmy may refer to: Arts and entertainment Film and television * ''Jimmy'' (2008 film), a 2008 Hindi thriller directed by Raj N. Sippy * ''Jimmy'' (1979 film), a 1979 Indian Malayalam film directed by Melattoor Ravi Varma * ''Jimmy'' (2013 f ...
counterparts until 1985, when it was replaced by the 2.5 L Tech IV engine. This engine produced at 4600 RPM and at 2400 RPM. Applications: *1982–1985 Chevrolet S-10 and GMC S-15 *1982–1985 Chevrolet S-10 Blazer and GMC S-15 Jimmy


Generation II


2.0


LL8

This engine replaced the LQ5 and was used from 1987 until 1989. It featured throttle body fuel injection and produced and of torque. Applications: *1987–1989 Buick Skyhawk *1987–1989 Chevrolet Beretta *1987–1989 Chevrolet Cavalier *1987–1989 Chevrolet Corsica *1987–1988 Oldsmobile Firenza *1987–1989
Pontiac Tempest The Pontiac Tempest is an automobile that was produced by Pontiac from 1960 to 1970, and again from 1987 to 1991. The Tempest was introduced as an entry-level compact in October 1960 at the Paris Auto Show for the 1961 model year. An innovativ ...


2.2


LM3

For the 1990 model year, GM replaced the 2.0 L engine with a stroked version displacing 2.2 L and using
throttle-body fuel injection Manifold injection is a mixture formation system for internal combustion engines with external mixture formation. It is commonly used in engines with spark ignition that use petrol as fuel, such as the Otto engine, and the Wankel engine. In a ma ...
(TBI). Commonly called the 2.2, it produced and of torque. Applications: *1990–1991 Chevrolet Beretta *1990–1991 Chevrolet Cavalier *1990–1991 Chevrolet Corsica *1990–1991
Pontiac Tempest The Pontiac Tempest is an automobile that was produced by Pontiac from 1960 to 1970, and again from 1987 to 1991. The Tempest was introduced as an entry-level compact in October 1960 at the Paris Auto Show for the 1961 model year. An innovativ ...


LN2

For 1992, the 2.2 received multi-port fuel injection (MPFI), replacing the
TBI TBI may refer to: Medicine * toe-brachial index, a parameter for the diagnosis of peripheral arterial disease * Total body irradiation, a form of radiation therapy used most commonly in bone marrow transplantation * Tracheobronchial injury, an inj ...
version in the J-body cars and increasing power to and of torque. In the L-body cars it was converted straight to Sequential Fuel Injection. In 1994, all 2.2 L engines were updated to sequential multi-port fuel injection and power increased to , with torque increasing to . The MPFI and SFI versions produced enough power to allow the 2.2 to replace the old Pontiac Iron Duke engine as the 4-cylinder offering in the S/T platform trucks and A-body cars. For 1996, it became known as the Vortec 2200 in the S/T trucks. For 1998, the engine was revised for emissions regulations and became known as the 2200. This revision lowered power to at 5000 rpm, and torque to at 3600 rpm. The engine was discontinued in 2003, replaced by the 2.2 L DOHC
Ecotec Ecotec (capitalized ECOTEC, from 'Emissions Control Optimization TEChnology') is a General Motors (GM) and Opel Automobile GmbH (Opel) trademark that refers to a series of emissions technologies that were implemented throughout a range of GM engines ...
engine. Although it displaces 134 cu. in, the 2.2 L OHV is still commonly referred to as the GM 122 today, and has been reputed for its simplicity, reliability and ease of maintenance in the J-body cars and S-Series trucks, and a few L-Body cars. The 2003 model LN2 is equipped with secondary air injection. Applications: *1993–1996 Buick Century *1992–1996 Chevrolet Beretta *1992–2002 Chevrolet Cavalier *1992–1996 Chevrolet Corsica *1993
Chevrolet Lumina The Chevrolet Lumina is a mid-size car that was produced and marketed by the Chevrolet division of General Motors from 1989 until 2001. __TOC__ Background The first generation of the Lumina replaced the Chevrolet Celebrity and Chevrolet ...
*1994–1997, 2003 Chevrolet S-10, GMC Sonoma and Isuzu Hombre *1993–1994
Grumman LLV The Grumman Long Life Vehicle (LLV) is an American light transport truck model, designed as a mail truck for the United States Postal Service, which is its primary user. It is also used by Canada Post. History The Grumman LLV was specifically de ...
*1993–1996 Oldsmobile Cutlass Ciera *1995–2002 Pontiac Sunfire


L43

The Vortec 2200 (RPO code L43) is an OHV
straight-4 A straight-four engine (also called an inline-four) is a four-cylinder piston engine where cylinders are arranged in a line along a common crankshaft. The vast majority of automotive four-cylinder engines use a straight-four layout (with the ...
truck A truck or lorry is a motor vehicle designed to transport cargo, carry specialized payloads, or perform other utilitarian work. Trucks vary greatly in size, power, and configuration, but the vast majority feature body-on-frame constructi ...
engine. This engine is equipped with secondary air injection, and is flex-fuel capable. It is entirely different from the Iron Duke, and was the last North American iteration of the GM 122 engine. The 2200 uses an iron block and aluminum 2-valve cylinder head. Output is at 5000 rpm and at 3600 rpm. Displacement is with an bore and stroke. 2200s were built at GM's Tonawanda engine plant in Buffalo. This engine was replaced by the LN2 in September 2002. Applications: *1998–2002 Chevrolet S-10, GMC Sonoma and Isuzu Hombre


See also

* List of GM engines


References

{{DEFAULTSORT:Gm 122 Engine
122 122 may refer to: *122 (number), a natural number * AD 122, a year in the 2nd century AD * 122 BC, a year in the 2nd century BC * ''122'' (film), a 2019 Egyptian psychological horror film *"One Twenty Two", a 2022 single by the American rock band Bo ...
Straight-four engines Gasoline engines by model