LS3 430HP Long Block

Reliable 6.2L LS3 Performance for Your Custom Build

The LS3 430HP Long Block is a premium 6.2L Gen IV V8 designed for builders seeking dependable performance, modern reliability, and the flexibility to create a custom engine package. Producing 430 horsepower, this long block is an ideal choice for muscle cars, hot rods, restomods, street rods, classic trucks, and LS engine swap projects.

Built on the legendary Chevrolet LS3 platform, this engine features a lightweight aluminum block, high-flow aluminum cylinder heads, and a hydraulic roller camshaft that delivers smooth power, excellent throttle response, and proven durability. Whether you’re replacing an aging engine or building a performance vehicle from the ground up, the LS3 430HP Long Block provides the solid foundation your project deserves.

Built for Performance and Versatility

The LS3 430HP Long Block is supplied as a complete long block assembly, allowing you to choose the intake system, fuel delivery, front accessory drive, engine management, and other supporting components that best suit your application. This flexibility makes it a popular choice for custom LS swaps and performance upgrades across a wide range of vehicles.

Designed for both everyday street use and spirited driving, the LS3 delivers a broad power curve, dependable operation, and the efficiency of modern GM V8 engineering.

Key Features

• 6.2L (376CI) Gen IV LS3 long block
• Produces 430 horsepower
• Lightweight aluminum engine block
• High-flow aluminum cylinder heads
• Hydraulic roller camshaft
• Durable factory-style rotating assembly
• Naturally aspirated for reliable, linear power delivery
• Excellent for muscle cars, hot rods, restomods, and classic truck upgrades
• Ideal foundation for custom LS engine swaps
• Professionally assembled for long-lasting reliability

Ideal Applications

The LS3 430HP Long Block is perfect for:

• Classic muscle car restorations
• Hot rods and street rods
• Restomod and pro-touring builds
• Custom trucks
• LS conversion projects
• High-performance engine replacements

Why Choose the LS3 430HP Long Block?

• Proven 430 HP LS3 performance
• Lightweight aluminum construction for improved handling
• Excellent balance of power, reliability, and drivability
• Flexible long block design for custom engine builds
• Trusted GM LS platform with outstanding aftermarket support
• Ideal for both first-time builders and experienced performance enthusiasts

The LS3 430HP Long Block delivers legendary LS reliability, modern V8 performance, and the flexibility to build the engine package that best fits your vehicle and driving style.