The GM 6.2 LS engine is one of the most respected V8 engines ever produced. Found in performance cars, luxury SUVs, trucks, and countless engine swap projects, the 6.2-liter LS platform delivers exceptional power, reliability, and aftermarket support.
Whether you’re researching the LS3, L92, L99, LSA, or LS9, this guide covers everything you need to know about 6.2 LS engine specifications, oil capacity, horsepower, torque, maintenance requirements, common problems, and performance potential.
6.2 LS Engine Overview
The 6.2 LS belongs to General Motors’ legendary Gen IV Small Block V8 family. Introduced as a high-performance evolution of earlier LS engines, the 6.2L platform combines lightweight construction, excellent airflow, compact dimensions, and impressive durability.
The most popular naturally aspirated version is the LS3, while supercharged variants such as the LSA and LS9 offer significantly higher power levels.
6.2 LS Engine Specifications
Specification | Value |
|---|---|
Engine Family | GM Gen IV LS |
Displacement | 6.2L (376 Cubic Inches) |
Configuration | 90° V8 |
Valvetrain | OHV Pushrod |
Block Material | Aluminum |
Bore | 4.065 Inches |
Stroke | 3.622 Inches |
Compression Ratio | 10.7:1 |
Horsepower | 403–638 HP Depending On Version |
Torque | 417–604 lb-ft |
Popular 6.2 LS Variants
Engine | Horsepower | Applications |
|---|---|---|
LS3 | 430 HP | Corvette, Camaro SS |
L92 | 403 HP | Escalade, Yukon Denali |
L99 | 400 HP | Camaro SS |
LSA | 556 HP | CTS-V, Camaro ZL1 |
LS9 | 638 HP | Corvette ZR1 |
Horsepower & Torque
The LS3, the most common naturally aspirated 6.2 LS engine, produces approximately 430 horsepower and 424 lb-ft of torque. Supercharged variants dramatically increase output, with the LS9 reaching 638 horsepower directly from the factory.
6.2 LS Oil Type
GM typically recommends SAE 5W-30 full synthetic motor oil for most naturally aspirated 6.2 LS applications. Performance and track-use vehicles may benefit from heavier viscosities depending on operating conditions.
6.2 LS Oil Capacity
Engine | Oil Capacity |
|---|---|
LS3 | 8 Quarts |
L92 | 8 Quarts |
L99 | 8 Quarts |
LSA | 8.9 Quarts |
LS9 | 10.5 Quarts |
Reliability
The 6.2 LS is widely regarded as one of the most reliable performance V8 engines ever built. The pushrod design minimizes complexity while maintaining exceptional durability. Many engines exceed 250,000 miles with routine maintenance.
Common 6.2 LS Problems
- Oil pressure sensor failures
- Valve spring wear on high-mileage engines
- Oil pickup tube O-ring leaks
- AFM lifter issues on specific variants
- Exhaust manifold bolt failures
- Occasional oil consumption
Fortunately, most of these issues are relatively inexpensive compared to repairs commonly associated with modern turbocharged engines.
Performance Upgrades
- Cold air intake systems
- Long-tube headers
- Performance camshaft upgrades
- Cylinder head modifications
- ECU tuning
- Supercharger kits
- Nitrous systems
- Fuel system upgrades
The 6.2 LS platform is capable of supporting well over 1,000 horsepower with appropriate internal upgrades and forced induction systems.
Maintenance Schedule
Service Item | Interval |
|---|---|
Oil & Filter Change | 5,000–7,500 Miles |
Air Filter | 15,000–30,000 Miles |
Spark Plugs | 80,000–100,000 Miles |
Coolant Service | 100,000 Miles |
Frequently Asked Questions
How much horsepower does a 6.2 LS make?
Most LS3 engines produce approximately 430 horsepower from the factory.
How much oil does a 6.2 LS hold?
Most naturally aspirated versions require approximately 8 quarts of oil.
Is the 6.2 LS reliable?
Yes. The 6.2 LS is considered one of the most reliable performance V8 engines ever produced.
What vehicles use the 6.2 LS?
Corvette, Camaro SS, Cadillac CTS-V, Escalade, Yukon Denali, Silverado, Sierra, and numerous crate engine applications.
Final Thoughts
The 6.2 LS engine remains one of GM’s greatest V8 achievements. With impressive factory performance, exceptional reliability, affordable maintenance, and unmatched aftermarket support, the 6.2-liter LS platform continues to dominate performance builds, engine swaps, street cars, trucks, and racing applications around the world.