Chevy LS3 Cylinder Head Assembly

Description

Proven Power. OEM Quality. LS Performance You Can Trust.

The Chevy LS3 Cylinder Head Assembly is the ultimate combination of factory-engineered reliability and performance airflow, making it a go-to choice for high-performance LS builds. Whether you’re replacing worn components, upgrading a street machine, or assembling a race-ready LS engine, these LS3 heads deliver impressive horsepower and torque gains while maintaining OEM fit and finish.

Featuring rectangular intake ports, high-flow valves, and precision machining, the LS3 head assembly is ideal for both naturally aspirated and boosted applications.

Product Details:

• Product Type: Complete Cylinder Head Assembly

• Model: LS3 (Chevy LS Series)

• Material: High-quality aluminum casting

• Valves: 2.165″ intake / 1.590″ exhaust (LS3 spec)

• Combustion Chamber Volume: 68–70cc (nominal)

• Port Style: Rectangular intake ports (high-flow design)

• Condition: Brand New OEM-style

• Finish: Machined / Bare Aluminum

• Shipping: Fast Nationwide Delivery 🇺🇸

Key Features:

• ✅ OEM GM Design – Built to factory LS3 performance specifications for durability and flow

• ✅ High-Flow Rectangular Ports – Superior intake flow for increased power output

• ✅ Performance Ready – Excellent for street performance, LS swaps, or boosted setups

• ✅ Direct Replacement – Bolt-on fit for LS3 and compatible LS platforms

• ✅ Compatible with Stock & Aftermarket Components – Works with OEM or upgraded camshafts, intakes, and valvetrain parts

Compatibility:

• Fits the following LS-based engines:

  • LS3, L99, L76, L92, L9H, and other rectangular-port LS variants

• Applications:

  • Performance street cars & trucks

  • LS swaps in classics, hot rods, and custom builds

  • High-RPM naturally aspirated builds or forced induction applications

• Works with OEM or aftermarket intakes, headers, and camshafts (pushrod length check recommended)

🛡️ Warranty Information:

• 1-Year Limited Warranty covering manufacturer defects in materials and workmanship

• Professional installation required for warranty eligibility

• Excludes damage from racing abuse or improper installation