6.2 LS Engine

The 6.2 LS engine is one of GM’s most popular modern V8 powerplants, known for its impressive horsepower, smooth power delivery, and outstanding reliability. Built with a lightweight aluminum block and high-flow cylinder heads, the 6.2 LS offers quick throttle response, efficient combustion, and strong performance across the entire RPM range. Perfect for classic car swaps, muscle cars, trucks, and high-performance builds, this engine delivers a great balance of power and durability. It’s simple yet advanced design combined with vast aftermarket support makes upgrades and customization easy, from mild street setups to turbocharged or supercharged applications.

The 6.2 LS provides the modern power, versatility, and long-lasting reliability enthusiasts expect from a top-tier GM engine.  The 6.2 LS engine is one of GM’s most popular modern V8 powerplants, known for its impressive horsepower, smooth power delivery and outstanding reliability. Built with a lightweight aluminum block and high flow cylinder heads.  

Specifications

LS3 Engine

The LS3 is a 6.2-liter V8 engine known for being powerful and easy to upgrade. It has an aluminum block to keep it light, and special high-flow cylinder heads that help it breathe well. Its compression ratio is 10.7:1, and it uses a performance-oriented hydraulic roller camshaft. From the factory, it makes about 426–430 horsepower. People like the LS3 because it responds really well to modifications and has great airflow. It was used in high-performance cars like the Chevrolet Corvette, the manual-transmission Camaro SS, and other GM performance models.  

L92 Engine

The L92 is a 6.2-liter V8 engine made by GM for big trucks and SUVs. It was the first time GM used an all-aluminum 6.2L engine in these vehicles. The engine has high-flow heads (similar to the LS3 car engine), Variable Valve Timing (VVT) to adjust power and efficiency, a 10.5:1 compression ratio, and a roller camshaft designed to give strong low- and mid-range torque which helps with towing and quick acceleration. This engine is found in the Cadillac Escalade, GMC Yukon Denali, and Chevrolet Tahoe LTZ. Overall, it’s a mix of good performance and strong towing ability.

L9H Engine

The L9H is the Flex Fuel-capable counterpart to the L92, retaining the same 6.2-liter aluminum-block architecture, high-flow rectangular-port heads, and VVT system while adding compatibility with E85 ethanol blends. This configuration allows slightly increased performance when running on E85 due to the fuel’s higher octane characteristics. With a 10.5:1 compression ratio and a torque-focused cam profile, the L9H delivers robust output in heavy-duty SUVs and trucks while offering fuel flexibility for owners.

L94 Engine

The L94 is another variant of the 6.2-liter Gen IV aluminum V8, closely mirroring the L92’s hardware but incorporating Active Fuel Management (AFM), GM’s cylinder-deactivation technology that enables the engine to run on four cylinders under light-load conditions for improved fuel economy. It maintains rectangular-port heads, VVT, and a 10.5:1 compression ratio, making it well-suited for premium full-size SUVs and trucks. The L94 strikes a balance between efficiency and the strong performance expected from a 6.2-liter engine.

Frequently Asked Questions