LML Duramax LML
6.6-літровий дизельний двигун V8 з турбонаддувом, відомий своєю потужністю та надійністю, широко використовується в пікапах Chevrolet.
60
Brand engines
2
Modifications
Technical Specifications
| Engine Displacement | 6.6 L (6,599 cc) |
| Configuration | V8 |
| Number of Cylinders | 8 |
| Valves per Cylinder | 4 |
| Power | 397 л.с. |
| Torque | 1037 Н*м |
| Cylinder Bore | 103.00 mm |
| Piston Stroke | 99.00 mm |
| Compression Ratio | 16.0:1 |
| Firing Order | 1-2-7-8-4-5-6-3 |
| Fuel System | Common Rail Direct Injection |
| Aspiration | Turbocharged |
| Turbocharger | Garrett GT3788VA |
| Intercooler | Yes |
| Maximum RPM | 3,200 rpm |
| Max Torque RPM | 1,600 rpm |
| Valve Train | OHV |
| Timing Drive | Gear |
| Block Material | Cast Iron |
| Head Material | Aluminum |
| Engine Weight | 403 kg |
| Dimensions (L×W×H) | null mm |
| Lubrication System | Wet sump |
| Cooling System | Liquid cooling |
Additional Information
| Engine Family | Duramax |
| Manufacturing Plant | Flint, Michigan, USA |
| Predecessor | LMM |
| Successor | L5P |
Maintenance
| Engine Oil Capacity | 9.5 L (with filter: 10 L) |
| Recommended Viscosity | 15W-40 |
| Oil Standard | API CJ-4 |
| Recommended Brands | Mobil Delvac, Shell Rotella, Valvoline Premium Blue |
| Oil Change Interval | 15 000 km or 12 mo |
| Oil Filter | ACDelco PF2232 |
| Air Filter |
ACDelco A3087C
Replace every 60 000 km |
| Fuel filter | ACDelco TP3018 |
| Cabin Filter | null |
| Spark Plugs | |
| Coolant Capacity | 24 L |
| Coolant Type | DEX-COOL (ACDelco) |
| Coolant Change Interval | 240 000 km |
| Thermostat Opening Temperature | 88°C |
| Operating Temperature | 90°C |
| Max Operating Temperature | 110°C |
| Critical Temperature | 120°C |
| Annual Maintenance Cost | 1000-1500 USD |
Reliability
Expected lifespan: 500 000 km
Common problems
| Problem | Severity | Mileage | Repair cost |
|---|---|---|---|
| Injector failure | High | 150000-200000 km | $3000-5000 |
| DPF clogging | Medium | 100000-150000 km | $1000-2000 |
Known defects
- CP4.2 fuel pump failure
- EGR valve issues
Warranty extensions
- Extended warranty for fuel system components
Tuning potential
Tuning potential: High | Max. safe power: 650 hp
| Stage | Power | Torque | Method | Cost |
|---|---|---|---|---|
| Stage 1 | 450 hp | 1200 Nm |
ECU remap only Reliability impact: Minimal |
$800 |
| Stage 2 | 500 hp | 1300 Nm |
ECU, Exhaust, Intake Required: Upgraded intercooler, Exhaust system, ECU remap Reliability impact: Low |
$3000 |
| Stage 3 | 600 hp | 1500 Nm |
Upgraded Turbo, Injectors Required: Bigger turbo, Forged internals, Upgraded fuel system Reliability impact: Medium-High |
$10000 |
Popular modifications
- Cold air intake
- Performance exhaust
- ECU tuning
Tuning limitations
- Transmission limitations above 600hp
- Cooling system upgrades needed for high power
Cars with the LML engine
This engine was fitted to 1 model
| Photo | Brand | Model | Generation | Production years |
|---|---|---|---|---|
|
No photo
|
Chevrolet | Tahoe | Tahoe III | 2007 - 2014 |
All modifications (2)
| Vehicle | Generation | Modification | Power | Gearbox | Drive |
|---|---|---|---|---|---|
| Chevrolet Tahoe | Tahoe III | Дизель 6.6L V8 397 л.с. 6-Автомат 2WD | 397 hp | 6-Автомат | 2WD |
| Chevrolet Tahoe | Tahoe III | Дизель 6.6L V8 397 л.с. 6-Автомат 4x4 | 397 hp | 6-Автомат | 4x4 |
Interesting Facts
- The LML was the first Duramax engine to use a selective catalytic reduction system.
- It was designed to meet stricter emissions standards while improving fuel efficiency.
Applications
Total produced: null
| Vehicle | Generation | Years | Power | Markets |
|---|---|---|---|---|
| Chevrolet Silverado HD | 2011-2016 | 2011-2016 | 397hp | North America |
| GMC Sierra HD | 2011-2016 | 2011-2016 | 397hp | North America |
Compatible transmissions: Allison 1000 6-speed Automatic
Drive types: RWD, 4WD
Fuel Economy
| Fuel Type | Diesel |
| Consumption (City) | 15.7 L/100km |
| Consumption (Highway) | 11.2 L/100km |
| Consumption (Combined) | 13.5 L/100km |
| Real Consumption | 14 L/100km |
| Fuel Tank Capacity | 136 L |
| Range | 1,007 km |
| Cost per 100 km | 20-25 USD |
Emissions Standards
| Emission Standard | Euro 5 |
| CO₂ Emissions | 295 g/km |
| Particulate Filter (DPF) |
Present Regeneration every 500 km |
| AdBlue |
Required Consumption: 1 L/1000km |
Awards and Recognition
- Ward's 10 Best Engines (2011) — Heavy-Duty Diesel
Comparison with competitors
| Engine | Brand | Displacement | Power | Torque |
|---|---|---|---|---|
| 6.7L Power Stroke | Ford | 6,700 cc | 440 hp | 1166 Nm |
| 6.7L Cummins | Ram | 6,700 cc | 385 hp | 1152 Nm |
Pros
- High torque output
- Reliable under heavy loads
- Good fuel efficiency for its class
Cons
- High repair costs
- Known fuel system issues
- DPF maintenance required