EJCP.PARTS

GM 3.9 OHV HIGH VALUE ENGINE

The High Value engine family from General Motors is a group of Cam in Block or "Overhead valve" V6 engines. They use the same 60° vee bank as the 60° V6 family they are based on, but the new 99 mm (3.9 in) bore required offsetting the bores by 1.5 mm (0.1 in) away from the engine centerline. These engines (aside from the LX9) are the first cam in block engines to implement Variable Valve Timing, and won the 2006 Breakthrough Award from Popular Mechanics for this innovation. For the 2007 model year, the 3900 engine features optional displacement on demand or "Active Fuel Management" which deactivates a bank of cylinders under light load to increase highway fuel economy. It was rumored GM would produce a 3-valve design, but that never came to be. These engines were produced primarily at the GM factory in Tonawanda, New York and at the Ramos Arizpe engine plant in Mexico.[1] The assembly line for this engine was manufactured by Hirata Corporation at their powertrain facility in Kumamoto, Japan. As of the 2012 model year, GM no longer sells these motors in any US market vehicles.[WIKI]

ITEMS

BRACKETS EXHAUST MANIFOLD INTAKE MANIFOLD OIL PAN PISTON
SENSORS TIMING COVER TIMING SET VALVE COVER VALVE INFORMATION

GM LZ8 3.9 OHV HIGH VALUE VCT AFM

The LZ8 3900 has the same Variable Cam Timing technology as the LZ9. The 2007 model year introduces the Active Fuel Management system (formerly known as Displacement on Demand), which can turn off a bank of cylinders under a light load for increased fuel economy. Output is slightly lower than the LZ9 at 233 hp (174 kW) and 240 lb·ft (325 N·m).[WIKI]

SIZES BLOCK MATERIAL HEAD MATERIAL CAM TYPE FUEL SYSTEM
3.9 OHV CAST IRON ALUMINUM OHV MPFI

LISTING TEMPLATES LZ8

SIZES COMPATABILITY ENGINE TEMP HEAD TEMP CRANK TEMP NOTES
3.9 OHV 07 IMPALA 3.9A 3.5B ***** BJJ

GM LZ9 3.9 OHV HIGH VALUE VCT

Bore is 99 mm (3.9 in) and stroke is 84 mm (3.3 in) for a displacement of 3880 cc (237 cu in). The new LZ9 3900 features Variable Cam Timing, a new feature on a pushrod engine, roller rocker arms and has a variable length intake manifold. A computer controlled plenum divider that, along with the VVT cam function, improves efficiency across a broader RPM range. It produces 240 hp (179 kW) and 240 lb·ft (325 N·m) torque, with a wide torque curve. 90% of the torque is available from 1500 rpm to 5500 rpm. [WIKI]

SIZES BLOCK MATERIAL HEAD MATERIAL CAM TYPE FUEL SYSTEM
3.9 OHV CAST IRON ALUMINUM OHV MPFI

LISTING TEMPLATES LZ9

SIZES COMPATABILITY ENGINE TEMP HEAD TEMP CRANK TEMP NOTES
3.9 OHV 06-07 malibu montana relay terraza uplander
06 impala
3.9A 3.5B *****
3.9 OHV 08 MONTANA UPLANDER 3.9B 3.5B *****
3.9 OHV 08 G6 3.9D 3.5B ***** BCB
3.9 OHV 09 MONTANA UPLANDER 3.9C 3.5B *****
3.9 OHV 09 G6 3.9E 3.5B *****
3.9 OHV 09-10 LUCERNE 3.9F 3.5B *****

GM LGD 3.9 OHV HIGH VALUE VCT FLEX FUEL

Bore is 99 mm (3.9 in) and stroke is 84 mm (3.3 in) for a displacement of 3880 cc (237 cu in). The new LZ9 3900 features Variable Cam Timing, a new feature on a pushrod engine, roller rocker arms and has a variable length intake manifold. A computer controlled plenum divider that, along with the VVT cam function, improves efficiency across a broader RPM range. It produces 240 hp (179 kW) and 240 lb·ft (325 N·m) torque, with a wide torque curve. 90% of the torque is available from 1500 rpm to 5500 rpm. [WIKI]

SIZES BLOCK MATERIAL HEAD MATERIAL CAM TYPE FUEL SYSTEM
3.9 OHV CAST IRON ALUMINUM OHV MPFI

LISTING TEMPLATES LGD

SIZES COMPATABILITY ENGINE TEMP HEAD TEMP CRANK TEMP NOTES
3.9 OHV 07 TERREZA UPLANDER 3.9A 3.5B ***** BCB BJB
3.9 OHV 08 UPLANDER 3.9B 3.5B *****
3.9 OHV 09 UPLANDER 3.9C 3.5B *****
3.9 OHV 09-11 IMPALA LUCERNE 3.9D 3.5B *****

GM LZG 3.9 OHV HIGH VALUE VCT AFM FLEX FUEL

The LZG 3900 is a flexible fuel version of the LZ8 that replaces the LZ8 in the Chevrolet Impala. It keeps the Active Fuel Management system introduced on that engine and produces a nearly identical 233 hp (174 kW) and 240 lb·ft (325 N·m). [WIKI]

SIZES BLOCK MATERIAL HEAD MATERIAL CAM TYPE FUEL SYSTEM
3.9 OHV CAST IRON ALUMINUM OHV MPFI

LISTING TEMPLATES LZ9

SIZES COMPATABILITY ENGINE TEMP HEAD TEMP CRANK TEMP NOTES
3.9 OHV 08 IMPALA 3.9A 3.5B ***** BSA

VALVE INFORMATION

MAKE MODEL YEAR RANGE
BUICK TERRAZA 2006-2007
CHEVROLET IMPALA 2006-2011
CHEVROLET MALIBU 2006-2010
CHEVROLET MONTE CARLO 2006-2007
CHEVROLET UPLANDER 2006-2008
PONTIAC G6 2006-2010
PONTIAC MONTANA 2006
SATURN AURA 2007-2008
SATURN RELAY 2006-2007
SATURN VUE 2008-2010
TYPE HEAD DIAMETER STEM DIAMETER O.A.L. GROOVES LOCATION
EXHAUST 38.7 7.9 121.8 1 *GM35BU
INTAKE 47.5 7.9 122.5 1 *GM35BU

CAMSHAFT POSITION SENSOR 06-08 ALL 07-09 TORRENT EQUINOX

CAMSHAFT POSITION SENSOR 09-11

CRANKSHAFT POSITION SENSOR

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