Chevy LS1, LS6 CNC Ported Aluminum Cylinder Head

Build your cathedral-port LS engine with a bare aluminum cylinder head engineered for custom performance applications. Featuring 210cc cathedral-style intake runners, 64cc heart-shaped combustion chambers, cathedral intake ports, and D-port exhaust ports, this cylinder head is designed to support improved airflow and performance potential in LS1, LS6, and other compatible cathedral-port LS engine combinations.

The 210cc runner design provides an ideal balance of airflow and air velocity, helping support strong throttle response, torque production, and horsepower gains across a broad RPM range. Cathedral intake ports and D-port exhaust ports make this cylinder head an excellent choice for naturally aspirated street performance builds, muscle cars, performance trucks, street/strip vehicles, and LS swap projects.

As a bare casting, this cylinder head gives engine builders complete flexibility when selecting valves, springs, retainers, seals, and valvetrain components. This allows the cylinder head to be tailored to specific camshaft profiles, RPM ranges, and horsepower goals, making it ideal for custom engine builds and machine shop assembly.

Constructed from lightweight aluminum, this cylinder head helps reduce weight while dissipating heat more efficiently than comparable cast iron designs. Whether you're building a performance LS1, LS6, 5.3L truck engine, or a custom LS swap project, this bare aluminum cylinder head provides a strong foundation for a high-performance cathedral-port LS build.

 

Cylinder Head Technology
Designed with 210cc cathedral-style intake runners, 64cc heart-shaped combustion chambers, cathedral intake ports, and D-port exhaust ports, this aluminum cylinder head is engineered to support increased airflow and combustion efficiency in cathedral-port LS engine applications. The bare casting configuration allows builders to select the exact valvetrain components required for their specific performance goals.

Performance Benefits
The 210cc runner design helps maintain strong intake velocity while supporting increased airflow, making this cylinder head suitable for a wide range of naturally aspirated performance combinations. Aluminum construction helps reduce weight and dissipate heat efficiently, supporting improved throttle response, torque production, and horsepower potential.

COMPATIBLE WITH
GM LS SERIES V8 ENGINES - CATHEDRAL PORT
• 4.8L / 293 in³ (LR4, LY2)
• 5.3L / 325 in³ (LM7, L59, L33, LC9, LH6, LY5)
• 5.7L / 346 in³ (LS1, LS6)
• 6.0L / 364 in³ (LQ4, LQ9, LY6 with cathedral-port setup)

COMMON VEHICLE APPLICATIONS
Chevrolet Camaro
Chevrolet Corvette
Chevrolet Silverado
GMC Sierra
Chevrolet Tahoe
Chevrolet Suburban
Pontiac GTO

NOTES
• Fits cathedral-port LS engine applications only
• Bare cylinder head casting requires final assembly
• 210cc cathedral intake runners
• D-port exhaust ports
• Verify all valvetrain and engine compatibility before assembly
• Not compatible with rectangle-port LS cylinder head applications
• Cylinder head sold individually (purchase quantity of 2 required for complete engine).

SPECIFICATIONS
Assembled: No
Combustion Chamber Style: Heart
Combustion Chamber Volume: 64 cc
Cylinder Head Finish: Natural
Cylinder Head Material: Aluminum
Exhaust Port Location: Standard
Exhaust Port Shape: D-port
Intake Port Location: Standard
Intake Port Shape: Cathedral
Intake Runner: 210 cc
Quantity: Sold Individually
Valve Guide Material: Bronze