 | GM 60-Degree V6 engine: Encyclopedia II - GM 60-Degree V6 engine - Generation III
GM 60-Degree V6 engine - Generation III
The third generation of the 60° engine was introduced in the 1993 Oldsmobile Cutlass Supreme. It was still an iron block/aluminum head engine, but the head was redesigned for better air flow.
GM 60-Degree V6 engine - L82
The L82 was a high-output version of the MFI LH0, produced from 1994 through 1999. It featured a structural oil pan, a stiffer redesigned engine block, and sequential fuel injection. Output for this version was up 20 hp to 160 hp (up 15 kW to 118 kW) and 185 ft·lbf (250 N·m).
GM 60-Degree V6 engine - LG8
The LG8 3100 is a modern version of the 3.1, produced since model year 2000. It still has an iron block and 2-valve pushrod aluminum heads but now has full sequential port fuel injection. The LG8 also features a new intake manifold and numerous changes to improve parts sharing with the offshoot GM High Value engine family. Emmissions were improved with air injection for LEV status. Power is 170 hp-175 hp (127 kW to 131 kW) and torque is 190 ft·lbf–195 ft·lbf (258 N·m to 264 N·m). The LG8 is built in Ramos Arizpe, Mexico and Tonawanda, New York.
It is used in:
- 1999-2003 Pontiac Grand Prix
- 1999-2005 Buick Century
- 1999-2003 Chevrolet Malibu
GM 60-Degree V6 engine - 3.4
GM produced two 3.4 L variants of the 60° block: A normal large-bore OHV descendant of the 3.1 L (the LA1) and an odd DOHC version, the LQ1. Applications:
- 1993-1995 Chevrolet Camaro
- 1993-1995 Pontiac Firebird
The LQ1 (also called the Twin Dual Cam) was a special DOHC version of the 3.1 L LG8 V6. Produced from 1991 to 1997, it used tuned multiport fuel injection and four large valves per cylinder to produce 215 hp (163 kW) and 225 ft·lbf (297 N·m). The 3.4 L uses a cogged belt to drive the four overhead camshafts. The gearbox options for the LQ1 were a 4 speed Hydra-Matic electronic shifting transmission and a 5 speed Getrag manual transmission. Adapting a pushrod block for overhead cams was difficult, and the 60° vee angle made this a very tall engine, but power output was impressive.
Bore was increased to 92 mm, but the 3.1 L engine's 84 mm stroke was retained. There are no interchangeable parts between this DOHC engine and any other members of the 60° family.
Applications:
- 1991-1994 Chevrolet Lumina Z34
- 1991-1992 Oldsmobile Cutlass Supreme
- 1991-1993 Pontiac Grand Prix
- 1995-1997 Chevrolet Monte Carlo Z34
The LA1 3400 is a bored-out version of the LG8. It retains the OHV layout of the previous engine. It was first utilized on the 1996 U Platform minivans (listed below) and appeared in a car for the first time in the 1999 Pontiac Grand Am. A 92 mm bore brings the displacement to 3.4 L (3350 cm³). Like the LG8, the LA1 features numerous common parts with the similar GM High Value engine family. Power is up to 170 hp-185 hp (127 kW to 138 kW) and torque is 200 ft·lbf to 210 ft·lbf (270 N·m to 285 N·m).
It is used in the following:
- 1996 Chevrolet Lumina APV/Pontiac Trans Sport/Oldsmobile Silhouette
- 1997-2004 Chevrolet Venture/Pontiac Montana/Oldsmobile Silhouette
- 1999 Pontiac Grand Am GT
- 2002-2005 Pontiac Aztek/Buick Rendezvous
- Oldsmobile Alero
- Chevrolet Impala
- Chevrolet Monte Carlo
GM 60-Degree V6 engine - China
Production of the 60° family began in China with the success of the Buick marque there. Importation of Chinese-built engines to the United States began in 2004 with the LNJ found in the Chevrolet Equinox.
The LB8 2500 is General Motors base V6 in China. It is a derivative of the LG8 with the same 89 mm bore and a shorter 66.7 mm stroke for 2.5 L (2490 cm³). It is still an iron block with pushrods and an aluminum 2-valve head. Power is 145 hp (108 kW) and 155 ft·lbf (210 N·m). It is built by Shanghai GM in Shanghai, China.
This engine is used in:
The LW9 3500 is a larger version of the LB8 with an 80 mm stroke for 3.0 L (2986 cm³). Power is 170 hp (127 kW) and torque is 185 ft·lbf (251 N·m).
It is used in the following:
The 3.4 L LNJ is a modified version of the normal 3400 engine. It includes a modified intake manifold, oil pan, engine cover, and fuel system as well as electronic throttle control. It is built in Shanghai, China and imported to the United States for use in the Chevrolet Equinox.
Other related archives1978, 1980, 1981, 1982, 1983, 1984, 1985, 1986, 1987, 1988, 1989, 1990, 1991, 1993, 1994, 1995, 1996, 1997, 1999, 2000, 2004, Buick, Buick Century, Buick GL/GLX (China), Buick GL/GLX/GL8 (China), Buick Regal, Buick Rendezvous, Buick Skylark, Chevrolet Beretta, Chevrolet Camaro, Chevrolet Cavalier, Chevrolet Celebrity, Chevrolet Citation, Chevrolet Corsica, Chevrolet Equinox, Chevrolet Impala, Chevrolet Lumina, Chevrolet Lumina APV, Chevrolet Malibu, Chevrolet Monte Carlo, Chevrolet S-10, Chevrolet S-10 Blazer, Chevrolet Venture, Chevrolet X-11, China, DOHC, F-body, GM H platform, GM High Value engine, GM engines, GMC S-15, GMC S-15 Jimmy, General Motors, Isuzu, Jeep Cherokee, Jeep Comanche, LEV, MFI, MPFI, McLaren, OHV, Oldsmobile Achieva, Oldsmobile Alero, Oldsmobile Cutlass Ciera, Oldsmobile Cutlass Supreme, Oldsmobile Omega, Oldsmobile Silhouette, Pontiac 6000, Pontiac Aztek, Pontiac Fiero, Pontiac Firebird, Pontiac Grand Am, Pontiac Grand Prix, Pontiac Montana, Pontiac Phoenix, Pontiac Sunbird, Pontiac Trans Sport, SFI, Shanghai GM, Shanghai, China, TBI, Tonawanda, New York, U Platform, V6, X cars, X-body, carburetor, electronic throttle control, front wheel drive, fuel injection, intake manifold, longitudinal, longitudinal engine, multi-port fuel injection, multiport fuel injection, pushrod, rear wheel drive, sequential port fuel injection, throttle-body fuel injection, transverse engine, transverse engines, turbocharged
 Adapted from the Wikipedia article "Generation III", under the G.N U Free Docmentation License. Please also see http://en.wikipedia.org/wiki |
