L67 Buick L67

3.8-літровий V6 двигун з механічним нагнітачем, відомий своєю потужністю та надійністю, але вимагає регулярного обслуговування компресора.

Brand: Buick Type: Petrol Configuration: V6 Production Years: 1995 - 2004 Production: Flint, Michigan, USA
16 Brand engines
13 Modifications

Technical Specifications

Engine Displacement 3.9 L (3,800 cc)
Configuration V6
Number of Cylinders 6
Valves per Cylinder 2
Power 240 - 260 л.с.
Torque 400 - 420 Н*м
Cylinder Bore 89.00 mm
Piston Stroke 90.00 mm
Compression Ratio 8.5:1
Firing Order 1-2-3-4-5-6
Fuel System Supercharger with Sequential Fuel Injection
Aspiration Supercharged
Intercooler No
Maximum RPM 6,000 rpm
Max Torque RPM 3,600 rpm
Valve Train DOHC
Timing Drive Chain
Block Material Cast Iron
Head Material Aluminum
Engine Weight 180 kg
Dimensions (L×W×H) 600 × 600 × 600 mm
Lubrication System Pressure lubrication
Cooling System Liquid cooling

Additional Information

Engine Family GM 3800 Series II
Manufacturing Plant Flint, Michigan, USA

Maintenance

Engine Oil Capacity 5 L (with filter: 5.5 L)
Recommended Viscosity 5W-30
Oil Standard API SM
Recommended Brands Mobil 1, Castrol, Valvoline
Oil Change Interval 5 000 km or 6 mo
Oil Filter AC Delco PF46
Air Filter AC Delco A3140C
Replace every 30 000 km
Spark Plugs Type: Iridium
Part number: AC Delco 41-101
Gap: 1.1 mm
Quantity: 6 pcs
Replace every 100 000 km
Coolant Capacity 8 L
Coolant Type Dex-Cool (GM Coolant)
Coolant Change Interval 240 000 km
Thermostat Opening Temperature 88°C
Operating Temperature 90°C
Max Operating Temperature 110°C
Critical Temperature 125°C
Annual Maintenance Cost 600-800 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 $500-800
Supercharger failure High 120000-180000 km $1000-1500

Known defects

  • Intake manifold gasket issues
  • Supercharger bearing failure

Warranty extensions

  • GM extended warranty for engine issues up to 100000 miles

Tuning potential

Tuning potential: Medium | Max. safe power: 450 hp

Stage Power Torque Method Cost
Stage 1 280 hp 450 Nm ECU remap and intake upgrade
Reliability impact: Minimal 		$600
Stage 2 320 hp 500 Nm ECU, Pulley Upgrade, Intake
Required: Upgraded intercooler, High-flow fuel injectors
Reliability impact: Medium 		$1500
Stage 3 400 hp 600 Nm -
Required: Bigger supercharger, Forged internals
Reliability impact: High 		$3000

Popular modifications

  • ECU tuning
  • Cold air intake
  • High-performance exhaust

Tuning limitations

  • Stock internals limit power potential
  • Supercharger limitations at high boost

Детальні технічні характеристики

2
модифікацій
228–245
к.с.

Спільні характеристики

Back suspension Semi-dependent, spring
Back track width 1588 mm
Body type Coupe
Boost type compressor
Capacity 3791 cm3
Car class E
City driving fuel consumption per 100 km 13.1 l
Clearance 140 mm
Compression ratio 8.5
Country USA
Cylinder bore 96.5 mm
Cylinder layout V-type
Engine code L67
Engine model L67
Engine placement Front, transverse
Engine type Gasoline
Front brakes Disc
Front suspension Independent, spring
Front track width 1588 mm
Fuel 95
Fuel tank capacity 70 l
Full weight 1985 kg
Height 1390 mm
Highway driving fuel consumption per 100 km 8.7 l
Injection type distributed injection (multipoint)
Length 5263 mm
Min trunk capacity 495 l
Number of cylinders 6
Number of doors 2
Number of gear 4
Number of seater 5
Pitch Circle Diameter DIA70.3 5x115 mm
Rear brakes Disc
Steering wheel position Left
Stroke cycle 86.4 mm
Timing belt OHV
Valves per cylinder 2
Wheel size 225/60 R16
Wheelbase 2890 mm
Width 1905 mm

Модифікації двигуна

3.8 AT (228 hp)
Привід Front wheel drive КПП Automatic Riviera 8 1994–1999
228 hp
engine
Engine power 228 hp
Max power (kW) 167 kW
Max power at RPM 5000 RPM
Maximum torque 373 N*m
Turnover of maximum torque 3200 RPM
performance
Acceleration (0-100 km/h) 8.9 s
Max speed 220 km/h
transmission
Drive wheels Front wheel drive
Gearbox type Automatic
dimensions
Curb weight 1690 kg
3.8 AT (245 hp)
Привід Front wheel drive КПП Automatic Riviera 8 1994–1999
245 hp
engine
Engine power 245 hp
Max power (kW) 180 kW
Max power at RPM 5200 RPM
Maximum torque 380 N*m
Turnover of maximum torque 3600 RPM
performance
Acceleration (0-100 km/h) 8.8 s
Max speed 229 km/h
transmission
Drive wheels Front wheel drive
Gearbox type Automatic
dimensions
Curb weight 1675 kg

Cars with the L67 engine

This engine was fitted to 6 models

Photo Brand Model Generation Production years
No photo
 Buick Century Century 1997 - 2005
No photo
 Pontiac Bonneville Bonneville 1999 - 2005
No photo
 Pontiac Grand Prix Grand Prix 1996 - 2008
No photo
 Pontiac Catalina Catalina (B-body) 1965 - 1970
No photo
 Pontiac Catalina Catalina (B-body) 1971 - 1976
No photo
 Pontiac LeMans LeMans (A-Body) 1968 - 1972
No photo
 Pontiac Tempest Tempest (A-body) 1968 - 1970
No photo
 Pontiac Tempest Tempest (A-body) 1971 - 1975

All modifications (13)

Vehicle Generation Modification Power Gearbox Drive
Buick Century Century 3.9 V6 240 л.с. 4-Автомат 2WD 240 hp 4-Автомат 2WD
Buick Century Century 3.9 V6 240 л.с. 4-Автомат 4x4 240 hp 4-Автомат 4x4
Pontiac Bonneville Bonneville 3.8L V6 240 л.с. 4-Автомат 2WD 240 hp 4-Автомат 2WD
Pontiac Bonneville Bonneville 3.8L V6 240 л.с. 4-Автомат 4x4 240 hp 4-Автомат 4x4
Pontiac Grand Prix Grand Prix 3.8L V6 200 л.с. 4-Автомат 2WD 200 hp 4-Автомат 2WD
Pontiac Grand Prix Grand Prix 3.8L V6 200 л.с. 5-Автомат 2WD 200 hp 5-Автомат 2WD
Pontiac Grand Prix Grand Prix 3.8L V6 200 л.с. 6-Автомат 2WD 200 hp 6-Автомат 2WD
Pontiac Catalina Catalina (B-body) Pontiac 389 V8 325 л.с. 3-Автомат 2WD 325 hp 3-Автомат 2WD
Pontiac Catalina Catalina (B-body) Pontiac 400 V8 350 л.с. 4-Автомат 2WD 350 hp 4-Автомат 2WD
Pontiac Catalina Catalina (B-body) 400ci V8 6.6 л 250 л.с. 3-Автомат 2WD 250 hp 3-Автомат 2WD
Pontiac LeMans LeMans (A-Body) Pontiac LeMans 400 330 л.с. 4-Автомат 2WD 330 hp 4-Автомат 2WD
Pontiac Tempest Tempest (A-body) Pontiac 400 6.6 л.с. 3-Автомат 2WD 350 hp 3-Автомат 2WD
Pontiac Tempest Tempest (A-body) 400 cu in V8 230 л.с. 3-Автомат 2WD 230 hp 3-Автомат 2WD

Interesting Facts

  • The L67 was known for its strong performance in the mid-size sedan market.
  • It was one of the last supercharged engines produced by GM.

Applications

Total produced: approximately 500000

Vehicle Generation Years Power Markets
Buick Regal 1997-2004 1997-2004 240hp/260hp North America
Buick Grand Prix 1997-2003 1997-2003 240hp/260hp North America

Compatible transmissions: 4-speed Automatic, 5-speed Manual

Drive types: FWD

Fuel Economy

Fuel Type Petrol 91
Octane Rating Minimum: 87 | Recommended: 91
Consumption (City) 12 L/100km
Consumption (Highway) 8 L/100km
Consumption (Combined) 10 L/100km
Real Consumption 11 L/100km
Fuel Tank Capacity 70 L
Range 700 km
Cost per 100 km 15-20 USD

Emissions Standards

Emission Standard Euro 3
CO₂ Emissions 250 g/km
Particulate Filter (DPF) Absent
AdBlue Not Required

Comparison with competitors

Engine Brand Displacement Power Torque
EJ20 Subaru 2,000 cc 250 hp 350 Nm
3.8L V6 Ford 3,800 cc 200 hp 300 Nm

Pros

  • Strong low-end torque
  • Good reliability record
  • Easy to modify for performance

Cons

  • Higher fuel consumption compared to NA engines
  • Supercharger maintenance can be costly