LSX376-B15 Crate Engine 473HP

For performance enthusiasts searching for a bulletproof foundation for forced induction builds, the LSX376-B15 Crate Engine 473HP is the go-to solution. This GM LS-Series powerhouse is purpose-built to support high-boost applications, delivering an impressive 473 horsepower and 444 lb-ft of torque. Whether you're planning a twin-turbo street machine or a supercharged track beast, this crate engine delivers the strength and performance you demand.

Crafted around the ultra-durable LSX cast-iron block, the LSX376-B15 boasts forged steel internals and high-flow LSX-LS3 rectangular-port cylinder heads. This engine is engineered to handle up to 15 psi of boost right out of the box, making it ideal for enthusiasts who want serious power without compromising reliability. The precision-balanced rotating assembly and low 9.0:1 compression ratio make it a perfect match for turbocharged or supercharged setups.

Unlike traditional crate engines, the LSX376-B15 offers flexibility by arriving without an intake manifold or oil pan, giving builders the freedom to customize their induction and lubrication systems. The hydraulic roller camshaft delivers aggressive performance while maintaining street-friendly drivability. The LSX376-B15 Crate Engine 473HP is designed to meet the demands of today's high-performance applications and tomorrow's power goals.

Features:

• Forged Rotating Assembly – Supports up to 15 psi of boost, delivering unmatched durability for high-power builds.

• LSX Cast-Iron Block – Six-bolt, cross-bolted main caps ensure maximum bottom-end strength.

• High-Flow Cylinder Heads – LSX-LS3 rectangular ports improve airflow, essential for forced induction.

• Boost-Ready Compression Ratio – 9.0:1 ratio is ideal for turbo and supercharger compatibility.

• Hydraulic Roller Camshaft – Offers 0.560" intake / 0.555" exhaust valve lift for strong mid- and top-end power.

• Flexible Configuration – Ships without intake manifold or oil pan for personalized engine builds.

Say goodbye to the limitations of stock engines. The LSX376-B15 Crate Engine 473HP is built for gearheads who refuse to compromise on power, strength, or flexibility. Whether you're planning a Pro Street project, a dragstrip dominator, or a boosted daily driver, this engine delivers the muscle and reliability to bring your vision to life.

Technical Specifications: