General Motors 60° V6 engine

General Motors 60° V6 engine
General Motors 60° V6 engine
Overview
Manufacturer	General Motors
Also called	X engine
Production	1980–2005 (US); 1997–2010 (China)
Layout
Configuration	60° V6
Displacement	2.5 L; 151.9 cu in (2,490 cc); 2.8 L; 173.1 cu in (2,837 cc); 3.0 L; 182.2 cu in (2,986 cc); 3.1 L; 191.3 cu in (3,135 cc); 3.4 L; 204.4 cu in (3,350 cc);
Cylinder bore	89 mm (3.5 in); 92 mm (3.62 in);
Piston stroke	66.7 mm (2.63 in); 76 mm (2.99 in); 80 mm (3.15 in); 84 mm (3.31 in);
Cylinder block material	Cast iron
Cylinder head material	Cast iron; Aluminum;
Valvetrain	OHV 2 valves x cyl.; DOHC 4 valves x cyl.;
Compression ratio	9.5:1, 9.6:1
Combustion
Turbocharger	Only on LG5
Fuel system	Carburetor; Throttle-body fuel injection; Multi-port fuel injection; Sequential multi-port fuel injection;
Fuel type	Gasoline, M85, E85
Oil system	Wet sump
Cooling system	Water-cooled
Output
Power output	102–215 hp (76–160 kW)
Torque output	135–225 lb⋅ft (183–305 N⋅m)
Chronology
Successor	GM High Value Engine; Isuzu V engine (Isuzu applications only);

The General Motors 60° V6 engine family is a series of 60° V6 engines produced for both longitudinal and transverse applications. All of these engines are 12-valve cam-in-block or overhead valve engines, except for the LQ1 which uses 24 valves driven by dual overhead cams. These engines vary in displacement between 2.5 and 3.4 litres (2,490 and 3,350 cc) and have a cast-iron block and either cast-iron or aluminum heads. Production of these engines began in 1980 and ended in 2005 in the U.S., with production continued in China until 2010. This engine family was the basis for the GM High Value engine family. These engines have also been referred to as the X engines as they were first used in the X-body cars.

This engine is not related to the GMC V6 engine that was designed for commercial vehicle usage.

This engine family was developed by Chevrolet, although it was used by all of GM's divisions.

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