LY7 Cadillac LY7

Атмосферний V6 двигун з хорошою потужністю, але потребує регулярного обслуговування для підтримки надійності.

Brand: Cadillac Type: Petrol Configuration: V6 Production Years: 2004 - 2011 Production: St. Catharines, Ontario, Canada
14 Brand engines
37 Modifications

Technical Specifications

Engine Displacement 3.6 L (3,564 cc)
Configuration V6
Number of Cylinders 6
Valves per Cylinder 4
Power 255 - 275 л.с.
Torque 340 - 342 Н*м
Cylinder Bore 94.00 mm
Piston Stroke 85.60 mm
Compression Ratio 10.2:1
Firing Order 1-2-3-4-5-6
Fuel System Multi-point fuel injection
Aspiration Naturally Aspirated
Intercooler No
Maximum RPM 6,700 rpm
Max Torque RPM 3,200 rpm
Valve Train DOHC
Timing Drive Chain
Timing Chain Replacement 250000 or as needed
Block Material Aluminum
Head Material Aluminum
Lubrication System Pressure lubrication
Cooling System Liquid cooling

Additional Information

Engine Family GM High Feature V6
Manufacturing Plant St. Catharines, Ontario, Canada
Successor LFX

Maintenance

Engine Oil Capacity 6 L (with filter: 6.2 L)
Recommended Viscosity 5W-30
Oil Standard API SN
Recommended Brands ACDelco, Mobil 1, Castrol
Oil Change Interval 12 000 km or 12 mo
Oil Filter PF48
Air Filter A3087C
Replace every 60 000 km
Cabin Filter CF188
Spark Plugs Type: Iridium
Part number: 41-110
Gap: 1 mm
Quantity: 6 pcs
Replace every 100 000 km
Coolant Capacity 10.5 L
Coolant Type Dex-Cool (ACDelco)
Coolant Change Interval 240 000 km
Thermostat Opening Temperature 87°C
Operating Temperature 90°C
Max Operating Temperature 110°C
Critical Temperature 120°C
Annual Maintenance Cost 700-1000 USD

Reliability

Reliability rating: 7/10

Expected lifespan: 300 000 km

Common problems

Problem Severity Mileage Repair cost
Timing chain stretch High 150000-200000 km $1500-2500
Oil consumption Medium 100000-150000 km $500-1000

Known defects

  • Timing chain issues in early models
  • PCV valve clogging

Warranty extensions

  • GM extended warranty for timing chain issues up to 10 years/120000 miles

Tuning potential

Tuning potential: Medium | Max. safe power: 380 hp

Stage Power Torque Method Cost
Stage 1 300 hp 370 Nm ECU remap only
Reliability impact: Minimal 		$600
Stage 2 330 hp 400 Nm ECU, Exhaust System
Required: Cold air intake, Exhaust system, ECU remap
Reliability impact: Low 		$2500
Stage 3 360 hp 430 Nm -
Required: Upgraded camshafts, High-flow injectors, ECU remap
Reliability impact: Medium 		$5000

Popular modifications

  • Cold air intake
  • Cat-back exhaust system
  • ECU tuning

Tuning limitations

  • Stock internals limit power above 350hp
  • Cooling system upgrades recommended for track use

Детальні технічні характеристики

4
модифікацій
255–258
к.с.

Спільні характеристики

Back suspension Independent, spring
Body type Sedan
Boost type none
Capacity 3564 cm3
Car class E
Compression ratio 10.2
Country USA
Cylinder layout V-type
Engine code LY7
Engine placement Front, longitudinal
Engine type Gasoline
Front suspension Independent, spring
Fuel tank capacity 66 l
Injection type distributed injection (multipoint)
Number of cylinders 6
Number of doors 4
Rear brakes Disc
Steering wheel position Left
Stroke cycle 85.6 mm
Timing belt DOHC
Valves per cylinder 4

Модифікації двигуна

3.6 AT AWD (255 hp)
Привід All wheel drive (AWD) КПП Automatic STS Cadillac STS II 2004–2007
255 hp
engine
Cylinder bore 94 mm
Engine model LY7
Engine power 255 hp
Max power (kW) 190 kW
Max power at RPM 6200 RPM
Maximum torque 346 N*m
Min trunk capacity 391 l
Turnover of maximum torque 3200 RPM
performance
Acceleration (0-100 km/h) 7.9 s
Max speed 229 km/h
fuel
City driving fuel consumption per 100 km 13.9 l
Fuel 92
Highway driving fuel consumption per 100 km 9.4 l
transmission
Drive wheels All wheel drive (AWD)
Gearbox type Automatic
Number of gear 5
dimensions
Back track width 1581 mm
Clearance 159 mm
Curb weight 1890 kg
Front track width 1569 mm
Height 1463 mm
Length 4986 mm
Wheelbase 2956 mm
Width 1844 mm
suspension
Front brakes Disc
Wheel size 235/50 R17
other
Number of seater 4, 5
Pitch Circle Diameter DIA70.3 5x115 mm
3.6 AT RWD (255 hp)
Привід Rear wheel drive КПП Automatic STS Cadillac STS II 2004–2007
255 hp
engine
Cylinder bore 94.0 mm
Engine power 255 hp
Max power (kW) 190 kW
Max power at RPM 6500 RPM
Maximum torque 342 N*m
Min trunk capacity 391 l
Turnover of maximum torque 3200 RPM
performance
Acceleration (0-100 km/h) 7.4 s
Max speed 229 km/h
fuel
City driving fuel consumption per 100 km 17.7 l
Fuel 95
Highway driving fuel consumption per 100 km 9.4 l
Mixed driving fuel consumption per 100 km 12.4 l
transmission
Drive wheels Rear wheel drive
Gearbox type Automatic
Number of gear 5
dimensions
Back track width 1581 mm
Clearance 159 mm
Curb weight 1785 kg
Front track width 1569 mm
Full weight 2440 kg
Height 1463 mm
Length 4986 mm
Wheelbase 2956 mm
Width 1844 mm
suspension
Front brakes Disc
other
Number of seater 4, 5
Pitch Circle Diameter DIA70.1 5x115 mm
3.6 AT RWD (258 hp)
Привід Rear wheel drive КПП Automatic CTS 1 2002–2007
258 hp
engine
Cylinder bore 94.0 mm
Engine model LY7
Engine power 258 hp
Max power (kW) 189 kW
Max power at RPM 6200 RPM
Maximum torque 340 N*m
Min trunk capacity 430 l
Turnover of maximum torque 3200 RPM
performance
Acceleration (0-100 km/h) 7.0 s
Max speed 233 km/h
fuel
City driving fuel consumption per 100 km 16.6 l
CO2 emissions 275 g/km
Fuel 95
Highway driving fuel consumption per 100 km 8.7 l
Mixed driving fuel consumption per 100 km 11.6 l
transmission
Drive wheels Rear wheel drive
Gearbox type Automatic
Number of gear 5
dimensions
Back track width 1525 mm
Clearance 150 mm
Curb weight 1722 kg
Front track width 1525 mm
Full weight 2160 kg
Height 1440 mm
Length 4828 mm
Wheelbase 2880 mm
Width 1795 mm
suspension
Front brakes ventilated disc
Wheel size 225/50 R17, 225/55 R16
other
Number of seater 5
Pitch Circle Diameter DIA70.5 5x115 mm
3.6 MT RWD (258 hp)
Привід Rear wheel drive КПП Manual CTS 1 2002–2007
258 hp
engine
Cylinder bore 94.0 mm
Engine model LY7
Engine power 258 hp
Max power (kW) 189 kW
Max power at RPM 6200 RPM
Maximum torque 340 N*m
Min trunk capacity 430 l
Turnover of maximum torque 3200 RPM
performance
Acceleration (0-100 km/h) 7.0 s
Max speed 241 km/h
fuel
City driving fuel consumption per 100 km 16.2 l
CO2 emissions 269 g/km
Fuel 95
Highway driving fuel consumption per 100 km 8.5 l
Mixed driving fuel consumption per 100 km 11.4 l
transmission
Drive wheels Rear wheel drive
Gearbox type Manual
Number of gear 6
dimensions
Back track width 1525 mm
Clearance 150 mm
Curb weight 1706 kg
Front track width 1525 mm
Full weight 2160 kg
Height 1440 mm
Length 4828 mm
Wheelbase 2880 mm
Width 1795 mm
suspension
Front brakes ventilated disc
Wheel size 225/50 R17, 225/55 R16
other
Number of seater 5
Pitch Circle Diameter DIA70.5 5x115 mm

Cars with the LY7 engine

This engine was fitted to 15 models

Photo Brand Model Generation Production years
No photo
 Cadillac CTS CTS 2002 - 2007
No photo
 Cadillac SRX SRX 2004 - 2009
No photo
 Cadillac STS STS 2004 - 2007
No photo
 Chevrolet Equinox Equinox 2005 - 2009
No photo
 GMC Envoy Envoy 2001 - 2009
No photo
 Holden Commodore Commodore III (VZ) 2004 - 2007
No photo
 Holden Commodore Commodore IV (VE) 2006 - 2013
No photo
 Hummer H3 H3 2005 - 2010
No photo
 Pontiac G6 G6 2004 - 2010
No photo
 Pontiac G8 G8 2008 - 2009
No photo
 Saab 9-7X 9-7x 2005 - 2009
No photo
 Saturn Outlook Outlook 2006 - 2010
No photo
 Buick Rendezvous Rendezvous (CUV) 2001 - 2007
No photo
 Holden Calais Calais (VZ) 2004 - 2006
No photo
 Holden Statesman Statesman (WL) 2003 - 2006
No photo
 Holden UTE UTE (VZ) 2003 - 2007

All modifications (37)

Vehicle Generation Modification Power Gearbox Drive
Cadillac CTS CTS 3.6L V6 255 л.с. 6-МКП 2WD 255 hp 6-МКП 2WD
Cadillac CTS CTS 3.6L V6 255 л.с. 5-Автомат 2WD 255 hp 5-Автомат 2WD
Cadillac CTS CTS 3.6L V6 255 л.с. 6-Автомат 4x4 255 hp 6-Автомат 4x4
Cadillac SRX SRX 3.6L V6 255 л.с. 5-МКП 2WD 255 hp 5-МКП 2WD
Cadillac SRX SRX 3.6L V6 255 л.с. 6-Автомат 2WD 255 hp 6-Автомат 2WD
Cadillac SRX SRX 3.6L V6 255 л.с. 6-Автомат 4x4 255 hp 6-Автомат 4x4
Cadillac STS STS Cadillac STS 3.6L V6 255 л.с. 6-МКП 2WD 255 hp 6-МКП 2WD
Cadillac STS STS Cadillac STS 3.6L V6 255 л.с. 6-Автомат 2WD 255 hp 6-Автомат 2WD
Cadillac STS STS Cadillac STS 3.6L V6 304 л.с. 6-Автомат 2WD 304 hp 6-Автомат 2WD
Chevrolet Equinox Equinox 3.6L V6 252 л.с. 6-Автомат 2WD 252 hp 6-Автомат 2WD
Chevrolet Equinox Equinox 3.6L V6 252 л.с. 6-Автомат 4x4 252 hp 6-Автомат 4x4
GMC Envoy Envoy 3.6L V6 275 л.с. 5-ступ. Автомат 2WD 275 hp 5-ступ. Автомат 2WD
GMC Envoy Envoy 3.6L V6 275 л.с. 5-ступ. Автомат 4x4 275 hp 5-ступ. Автомат 4x4
Holden Commodore Commodore III (VZ) 3.6L V6 175 л.с. 4-МКП 2WD 175 hp 4-МКП 2WD
Holden Commodore Commodore III (VZ) 3.6L V6 175 л.с. 5-Автомат 2WD 175 hp 5-Автомат 2WD
Holden Commodore Commodore III (VZ) 3.6L V6 175 л.с. 6-Автомат 2WD 175 hp 6-Автомат 2WD
Holden Commodore Commodore III (VZ) 3.6L V6 175 л.с. 6-Автомат 4x4 175 hp 6-Автомат 4x4
Holden Commodore Commodore IV (VE) 3.6 V6 261 л.с. 6-МКП 2WD 261 hp 6-МКП 2WD
Holden Commodore Commodore IV (VE) 3.6 V6 261 л.с. 6-Автомат 2WD 261 hp 6-Автомат 2WD
Hummer H3 H3 3.5 V6 220 л.с. 5-Автомат 4x4 220 hp 5-Автомат 4x4
Hummer H3 H3 3.5 V6 220 л.с. 5-Автомат 2WD 220 hp 5-Автомат 2WD
Pontiac G6 G6 3.6L V6 252 л.с. 6-Автомат 2WD 252 hp 6-Автомат 2WD
Pontiac G6 G6 3.6L V6 252 л.с. 6-МКП 2WD 252 hp 6-МКП 2WD
Pontiac G8 G8 Pontiac G8 3.6L V6 256 л.с. 6-МКП 2WD 256 hp 6-МКП 2WD
Pontiac G8 G8 Pontiac G8 3.6L V6 256 л.с. 5-Автомат 2WD 256 hp 5-Автомат 2WD
Saab 9-7X 9-7x 3.6 V6 275 л.с. 5-Автомат 4x4 275 hp 5-Автомат 4x4
Saab 9-7X 9-7x 3.6 V6 275 л.с. 6-Автомат 4x4 275 hp 6-Автомат 4x4
Saturn Outlook Outlook 3.6L V6 281 л.с. 6-МКП 2WD 281 hp 6-МКП 2WD
Saturn Outlook Outlook 3.6L V6 281 л.с. 6-Автомат 2WD 281 hp 6-Автомат 2WD
Saturn Outlook Outlook 3.6L V6 281 л.с. 6-Автомат 4x4 281 hp 6-Автомат 4x4
Saturn Outlook Outlook 3.6L V6 281 л.с. 7-Автомат 2WD 281 hp 7-Автомат 2WD
Saturn Outlook Outlook 3.6L V6 281 л.с. 7-Автомат 4x4 281 hp 7-Автомат 4x4
Buick Rendezvous Rendezvous (CUV) Buick Rendezvous 3.6L V6 252 л.с. 6-Автомат 4x4 252 hp 6-Автомат 4x4
Holden Calais Calais (VZ) 3.6L V6 175 л.с. 4-Автомат 2WD 175 hp 4-Автомат 2WD
Holden Calais Calais (VZ) 3.6L V6 175 л.с. 5-Автомат 2WD 175 hp 5-Автомат 2WD
Holden Statesman Statesman (WL) 3.6L V6 240 л.с. 4-Автомат 2WD 240 hp 4-Автомат 2WD
Holden UTE UTE (VZ) V6 3.6L 240 л.с. 6-МКП 2WD 240 hp 6-МКП 2WD

Interesting Facts

  • The LY7 was one of the first engines to feature GM's High Feature V6 architecture.
  • It was used in a variety of GM vehicles across different brands.

Applications

Total produced: unknown

Vehicle Generation Years Power Markets
Cadillac CTS First Generation 2004-2007 255hp North America
Cadillac SRX First Generation 2004-2009 255hp North America

Compatible transmissions: 5-speed Automatic, 6-speed Automatic

Drive types: RWD, AWD

Fuel Economy

Fuel Type Petrol 95
Octane Rating Minimum: 91 | Recommended: 95
Consumption (City) 13 L/100km
Consumption (Highway) 8.5 L/100km
Consumption (Combined) 10.5 L/100km
Real Consumption 11.5 L/100km
Fuel Tank Capacity 68 L
Range 648 km
Cost per 100 km 15-20 USD

Emissions Standards

Emission Standard Euro 4
CO₂ Emissions 245 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
2GR-FE Toyota 3,456 cc 268 hp 336 Nm

Pros

  • Smooth power delivery
  • Good balance of power and efficiency

Cons

  • Timing chain issues
  • Higher oil consumption in some units