700HP GM LT4 Engine Package

700 HP GM LT4 Engine Package

Upgrade your vehicle with a GM LT4 6.2L Supercharged V8 Engine Package designed for high-performance applications and custom swaps. The LT4 combines direct fuel injection, a supercharger and forged internal components for high-output performance.

Chevrolet Performance lists the LT4 at 376 cubic inches (6.2L), 650 HP at 6,400 RPM and 650 lb-ft at 3,600 RPM. The engine uses a cast-aluminum block with six-bolt main caps, forged steel crankshaft, forged aluminum pistons and a supercharger system.

Key Specifications

• Engine: GM LT4 Gen-V Small-Block V8
• Displacement: 6.2L / 376 cu. in.
• Aspiration: Supercharged
• Factory Rating: 650 HP / 650 lb-ft
• Bore: 4.065″
• Stroke: 3.622″
• Compression: 10.0:1
• Block: Cast aluminum
• Crankshaft: Forged steel
• Pistons: Forged aluminum
• Cylinder Heads: Aluminum
• Fuel System: Direct injection
• Valvetrain: Hydraulic roller
• Recommended Fuel: Premium gasoline
• 700 HP Target: Requires appropriate supporting modifications and calibration

Common Applications

• Chevrolet Camaro ZL1
• Chevrolet Corvette Z06
• Custom Camaro builds
• Classic muscle-car swaps
• GM performance vehicles
• Custom LS/LT engine-swap projects

Chevrolet has also documented LT4 crate-engine installations in custom vehicles, making the platform suitable for a variety of performance builds when the required components are properly matched.

Supporting Components

A higher-output LT4 installation may require:

• ECU/PCM
• Wiring harness
• Fuel-system components
• Intercooling system
• Cooling system
• Compatible transmission
• Engine and transmission mounts
• Exhaust system
• Driveshaft modifications
• CAN-bus integration
• Custom tuning