LS3 6.2L V8 Crate Engine

LS3 crate engine power for classic muscle cars, street rods, restomods, and custom performance builds. This genuine GM LS3 6.2L V8 delivers a factory-rated 430 horsepower at 5,900 RPM and 424 lb-ft of torque at 4,600 RPM, combining strong low-end response with the broad powerband and drivability that make the LS platform so popular.

Built around a durable aluminum block, L92-style rectangular-port cylinder heads, and a robust rotating assembly, this LS3 6.2L V8 engine provides a proven foundation for performance swaps and custom builds. The complete turnkey-style package also includes a professionally calibrated ECU and simplified standalone wiring harness to make integration into a compatible vehicle more straightforward.

Package Highlights & Specifications

• Sale Title: GM LS3 6.2L 430 HP Crate Engine Package | Includes ECU, Standalone Wiring Harness & 1-Year Warranty
• Horsepower: 430 HP @ 5,900 RPM
• Torque: 424 lb-ft @ 4,600 RPM
• Displacement: 6.2L (376 cubic inches)
• Bore: 4.065 inches
• Stroke: 3.622 inches
• Engine Architecture: Gen IV small-block V8
• Block: Aluminum with 6-bolt main caps
• Cylinder Heads: Rectangular-port aluminum heads
• Electronics: Pre-calibrated ECU and standalone wiring harness
• Warranty: 1-year warranty

Built for LS3 Performance Builds

The LS3’s compact V8 architecture and strong aftermarket support make it a practical choice for muscle car restorations, street rods, restomods, and other performance projects. Whether you’re replacing an existing powerplant or planning a complete LS3 engine swap, this package gives you the core engine and electronics needed to get your build moving.

Before purchasing, verify engine mounts, transmission compatibility, accessory configuration, fuel system requirements, cooling, exhaust clearance, wiring, and ECU integration for your specific application.