GM 122 Engine - 2.0 L SOHC

2.0 L SOHC

A bored and stroked version of the 1.8 L SOHC engine was released in 1987 and now displaced 1,998.5 cc (2.0 L; 122.0 cu in) in a "square", 86 mm (3.39 in) configuration. Still utilizing TBI, this engine produced 96 hp (72 kW) and 118 lb·ft (160 N·m) of torque. As with the 1.8 L engine, a turbocharged version was available.

In 1992, Multi-Port Fuel Injection replaced TBI on the Naturally Aspirated engine, increasing horsepower from the original 96, to 110. Torque increased from 118 to 124 lb/ft.

The turbo variant, RPO code LT3 (known internationally as C20GET), utilized MPFI and featured brilliant red powder coating on the camshaft cover, intake manifold and boost pipe. Power was up to 165 hp (123 kW) at 5600 rpm and torque was 175 lb·ft (237 N·m) at 4000 rpm, which was achieved at 7 psi (48 kPa) of boost. The system did not utilize an intercooler; however, the Garrett T-25 turbocharger was water-cooled. Maximum boost at WOT was 9 psi (62 kPa).

Uses (normally 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
• 1987 Buick Skyhawk T-Type