The Chevrolet Performance LS 376/515 LS3 Long Block Crate Engine (19370412) is a performance-focused version of the LS3, featuring an aggressive camshaft that increases output to 515 HP and 483 lb-ft of torque. The carbureted intake manifold setup makes it an excellent choice for classic muscle cars and custom builds, allowing for a simplified fuel system while retaining modern LS power.

Big horsepower in a lightweight LS package!

⚠️ Requires a compatible carburetor, ignition system, and fuel system for full operation.

What’s Included in the LS 376/515 Crate Engine?

✅ Aluminum Engine Block & Heads – Provides maximum strength and lightweight performance
✅ Aggressive Hydraulic Roller Camshaft – Features high lift and duration for maximum horsepower
✅ Performance-Optimized Cylinder Heads – Designed for high airflow and combustion efficiency
✅ Carbureted Intake Manifold – Allows for easy integration with classic and performance builds
✅ Harmonic Balancer – Ensures smooth engine operation
✅ Water Pump & Timing Cover – Provides efficient cooling and proper camshaft timing
✅ Oil Pan & Valve Covers – Protects internal components and enhances durability
✅ Spark Plugs Included – Optimized for high-performance ignition and combustion efficiency

⚠️ EXCLUDES carburetor, throttle body, distributor, ignition components, flywheel, flexplate, computer, and wiring harness.

Technical Specifications

Built for high RPMs, track performance, and aggressive driving!

Fitment & Compatibility

✔ Perfect for high-performance street builds, drag racing, and pro-touring applications
✔ Designed for seamless integration with carbureted fuel systems
✔ Ideal for classic Chevy muscle cars, hot rods, and high-horsepower builds

Ensure your fuel system, ignition, and drivetrain components are compatible before ordering!

Installation Notes & Recommendations

Professional Installation Recommended – Ensures correct fitment, tuning, and performance
⚙️ Requires a Compatible Carburetor & Ignition System – Not included with the crate engine
Requires Premium Fuel (91 Octane or Higher) – Designed for high-performance applications

⚠️ Not emissions-certified—intended for off-road or racing applications.

❓ Frequently Asked Questions (FAQ)

What is the horsepower and torque output of this engine?

• The LS 376/515 produces 515 HP at 6,600 RPM and 483 lb-ft of torque at 5,200 RPM.

What’s different between this LS3 and a standard LS3?

• This version of the LS3 features a more aggressive camshaft, increasing horsepower from 430 HP to 515 HP, making it ideal for high-RPM power and performance applications.

Does it come with an intake manifold and fuel system?

• Yes, it includes a carbureted intake manifold but does NOT include a carburetor or throttle body. These must be purchased separately.

Can I install this engine in a classic Chevy muscle car?

• Yes! This Chevy LS 376/515 is an ideal upgrade for classic Camaro, Corvette, Chevelle, Nova, and other high-performance builds.

Does this engine require a specific fuel type?

• Yes, it requires premium fuel (91 octane or higher) due to its 10.7:1 compression ratio.

Order Your Chevrolet Performance LS 376/515 LS3 Long Block Crate Engine Today!

Upgrade your classic Chevy or performance build with the high-revving power of the Chevrolet Performance LS 376/515 LS3 Long Block Crate Engine!

✔ 515 HP & 483 lb-ft of Torque for Extreme Performance
✔ Complete Long Block Assembly with Aggressive Camshaft
✔ Ideal for Classic Chevy Restorations, Race Cars, and Custom Builds
✔ Built for Maximum Power, Durability, and High-RPM Performance

ORDER NOW & UNLEASH THE FULL POTENTIAL OF LS POWER!