The GM LS3 engine is a legendary 6.2L V8 that powered performance icons like the Chevrolet Corvette C6, Camaro SS, and Pontiac G8 GXP. Known for its high horsepower output, durability, and tuning potential, the LS3 remains one of the most popular LS engines ever built.
In this guide, you’ll discover the complete LS3 engine specifications, oil type, oil capacity, change interval, reliability, maintenance cost, and common issues in one place.
LS3 Engine Overview
The LS3 is part of GM’s Gen IV small-block V8 family. It is widely known for its strong aluminum construction, excellent airflow cylinder heads, and factory high-performance tuning. It delivers excellent balance between daily drivability and track capability.
- 6.2L Naturally Aspirated V8 Engine
- Aluminum Block & Cylinder Heads
- LS-Series Gen IV Architecture
- Drive-by-wire throttle system
- High-flow rectangular port heads
LS3 Engine Specifications
Specification | Details |
|---|---|
Engine Type | GM LS3 Gen IV V8 |
Displacement | 6.2L (376 cu in) |
Horsepower | 430 – 436 HP |
Torque | 424 lb-ft |
Compression Ratio | 10.7:1 |
Fuel System | Sequential Fuel Injection |
Block Material | Aluminum |
LS3 Engine Oil Type
The recommended oil for the LS3 engine is 5W-30 full synthetic engine oil that meets GM dexos specifications. This oil ensures proper lubrication under high RPM conditions and protects performance components.
- 5W-30 Full Synthetic (Recommended)
- 10W-30 (Hot climates / performance driving)
- 5W-40 (Track use / heavy load conditions)
LS3 Engine Oil Capacity
The LS3 oil capacity depends slightly on the vehicle and oil filter used.
Vehicle | Oil Capacity (with filter) |
|---|---|
Chevrolet Corvette C6 (LS3) | ~6.5 quarts |
Chevrolet Camaro SS (LS3) | ~6.0 – 6.5 quarts |
Pontiac G8 GXP (LS3) | ~6.0 quarts |
LS3 Oil Change Interval
- Normal Driving: Every 7,500 – 10,000 miles
- Performance Driving: Every 5,000 miles
- Track Use: Every 2,000 – 3,000 miles
- Severe Conditions: Every 3,000 – 5,000 miles
LS3 Oil Change Cost
- DIY Oil Change: $60 – $110
- Independent Workshop: $120 – $180
- Performance Shop: $150 – $250
Best Oil Brands for LS3 Engine
- Mobil 1 5W-30 Full Synthetic
- Castrol EDGE High Mileage
- Valvoline Advanced Full Synthetic
- ACDelco Dexos1 Gen 3 Oil
- Royal Purple High Performance Oil
Common LS3 Engine Problems
Some LS3 engines may consume small amounts of oil under aggressive driving conditions.
Lifter ticking can occur due to wear or oiling inconsistencies at high mileage.
High-performance use requires proper cooling system maintenance to avoid overheating.
Frequently Asked Questions (FAQ)
What oil does the LS3 engine use?
The LS3 engine uses 5W-30 full synthetic oil that meets GM dexos specifications.
How much oil does an LS3 hold?
The LS3 engine holds approximately 6.0 to 6.5 quarts depending on the vehicle.
Is LS3 a reliable engine?
Yes, the LS3 is known for excellent reliability and long lifespan when properly maintained.
How often should LS3 oil be changed?
Every 7,500–10,000 miles for normal use and 5,000 miles for performance driving.
What is the horsepower of LS3 engine?
The LS3 produces around 430 to 436 horsepower depending on application.
Final Thoughts
The LS3 engine is one of the most successful GM performance V8 engines ever built. With strong reliability, high horsepower, and excellent aftermarket support, it remains a favorite among enthusiasts.
For best performance and long engine life, always use 5W-30 full synthetic oil and follow proper maintenance intervals.