LZ9 GM High Value LZ9

3.9-літровий V6 двигун від Buick, відомий своєю надійністю, але з можливими проблемами з прокладкою головки блоку циліндрів.

Brand: Buick Type: Petrol Configuration: V6 Production Years: 2006 - 2011 Production: Tonawanda Engine Plant, New York, USA
16 Brand engines
9 Modifications

Technical Specifications

Engine Displacement 3.5 L (3,498 cc)
Configuration V6
Number of Cylinders 6
Valves per Cylinder 2
Power 240 л.с.
Torque 325 Н*м
Cylinder Bore 94.00 mm
Piston Stroke 85.60 mm
Compression Ratio 9.8:1
Firing Order 1-2-3-4-5-6
Fuel System Multi-point Fuel Injection
Aspiration Naturally Aspirated
Intercooler No
Maximum RPM 6,000 rpm
Max Torque RPM 3,200 rpm
Valve Train OHV
Timing Drive Chain
Timing Chain Replacement 250000 or as needed
Block Material Cast Iron
Head Material Aluminum
Lubrication System Wet sump
Cooling System Liquid cooling

Additional Information

Engine Family GM High Value engine family
Manufacturing Plant Tonawanda Engine Plant, New York, USA
Predecessor LG8

Maintenance

Engine Oil Capacity 4.7 L (with filter: 5 L)
Recommended Viscosity 5W-30
Oil Standard API SM
Recommended Brands ACDelco, Mobil 1, Valvoline
Oil Change Interval 12 000 km or 12 mo
Oil Filter PF61
Air Filter A3087C
Replace every 48 000 km
Cabin Filter CF10361
Spark Plugs Type: Iridium
Part number: 41-110
Gap: 1 mm
Quantity: 6 pcs
Replace every 160 000 km
Coolant Capacity 11 L
Coolant Type Dex-Cool (ACDelco)
Coolant Change Interval 240 000 km
Thermostat Opening Temperature 92°C
Operating Temperature 90°C
Max Operating Temperature 110°C
Critical Temperature 120°C
Annual Maintenance Cost 500-700 USD

Reliability

Reliability rating: 8/10

Expected lifespan: 300 000 km

Common problems

Problem Severity Mileage Repair cost
Intake manifold gasket failure Medium 100000-150000 km $400-600
Water pump failure Medium 120000-180000 km $300-500

Known defects

  • Potential for intake manifold gasket leaks

Tuning potential

Tuning potential: Low | Max. safe power: 260 hp

Stage Power Torque Method Cost
Stage 1 260 hp 340 Nm ECU remap only
Reliability impact: Minimal 		$400
Stage 2 280 hp 360 Nm - -
Stage 3 300 hp 380 Nm - -

Popular modifications

  • Cold air intake
  • Cat-back exhaust

Tuning limitations

  • Limited by naturally aspirated design

Детальні технічні характеристики

1
модифікація
227–227
к.с.

Спільні характеристики

Acceleration (0-100 km/h) 8.6 s
Back suspension Independent, spring
Back track width 1577 mm
Body type Sedan
Boost type none
Capacity 3880 cm3
Car class F
City driving fuel consumption per 100 km 12.4 l
Clearance 140 mm
Compression ratio 9.8
Country USA
Curb weight 1707 kg
Cylinder bore 99 mm
Cylinder layout V-type
Engine code LZ9
Engine model LZ9
Engine placement Front, transverse
Engine type Gasoline
Front brakes Disc
Front suspension Independent, spring
Front track width 1590 mm
Fuel 95
Fuel tank capacity 70 l
Full weight 2270 kg
Height 1473 mm
Highway driving fuel consumption per 100 km 8.1 l
Injection type distributed injection (multipoint)
Length 5161 mm
Max speed 195 km/h
Min trunk capacity 481 l
Number of cylinders 6
Number of doors 4
Number of gear 4
Number of seater 5, 6
Rear brakes Disc
Steering wheel position Left
Stroke cycle 84 mm
Timing belt OHV
Valves per cylinder 2
Wheel size 225/60/R16
Wheelbase 2936 mm
Width 1874 mm

Модифікація

3.9 AT (227 hp)
Привід Front wheel drive КПП Automatic Lucerne 1 [рест.] 2008–2011
227 hp
engine
Engine power 227 hp
Max power (kW) 167 kW
Max power at RPM 5700 RPM
Maximum torque 237 N*m
Turnover of maximum torque 3200 RPM
transmission
Drive wheels Front wheel drive
Gearbox type Automatic

Cars with the LZ9 engine

This engine was fitted to 3 models

Photo Brand Model Generation Production years
No photo
 Buick Terraza Terraza 2005 - 2007
No photo
 Chevrolet Epica Epica 2006 - 2012
No photo
 Pontiac Montana Montana 1997 - 2005
No photo
 Pontiac Montana Montana II 2006 - 2009

All modifications (9)

Vehicle Generation Modification Power Gearbox Drive
Buick Terraza Terraza 3.9L V6 240 л.с. 4-Автомат 2WD 240 hp 4-Автомат 2WD
Buick Terraza Terraza 3.9L V6 240 л.с. 4-Автомат 4x4 240 hp 4-Автомат 4x4
Chevrolet Epica Epica 2.5 163 л.с. 6-МКП 2WD 163 hp 6-МКП 2WD
Chevrolet Epica Epica 2.5 163 л.с. 6-Автомат 2WD 163 hp 6-Автомат 2WD
Chevrolet Epica Epica 2.5 163 л.с. 5-Автомат 4x4 163 hp 5-Автомат 4x4
Pontiac Montana Montana 3.9 V6 240 л.с. 4-Автомат 2WD 240 hp 4-Автомат 2WD
Pontiac Montana Montana 3.9 V6 240 л.с. 5-Автомат 2WD 240 hp 5-Автомат 2WD
Pontiac Montana Montana II 3.9L V6 240 л.с. 4-Автомат 2WD 240 hp 4-Автомат 2WD
Pontiac Montana Montana II 3.9L V6 240 л.с. 6-Автомат 2WD 240 hp 6-Автомат 2WD

Interesting Facts

  • The LZ9 was part of GM's High Value engine family, known for its balance of performance and efficiency.

Applications

Total produced: unknown

Vehicle Generation Years Power Markets
Buick LaCrosse First Generation 2006-2009 240hp North America
Chevrolet Impala Ninth Generation 2006-2011 240hp North America

Compatible transmissions: 4-speed Automatic, 6-speed Automatic

Drive types: FWD

Fuel Economy

Fuel Type Petrol 95
Octane Rating Minimum: 87 | Recommended: 91
Consumption (City) 13 L/100km
Consumption (Highway) 8.5 L/100km
Consumption (Combined) 10.5 L/100km
Real Consumption 11 L/100km
Fuel Tank Capacity 64 L
Range 610 km
Cost per 100 km 15-20 USD

Emissions Standards

Emission Standard Euro 4
CO₂ Emissions 250 g/km
Particulate Filter (DPF) Absent
AdBlue Not Required

Comparison with competitors

Engine Brand Displacement Power Torque
3.5L V6 Ford 3,496 cc 265 hp 339 Nm
3.5L V6 Toyota 3,456 cc 268 hp 336 Nm

Pros

  • Smooth power delivery
  • Reliable over long distances

Cons

  • Higher fuel consumption compared to newer engines
  • Limited tuning potential