Chevy LS1, LS6 Assembled Aluminum Cylinder Head

Upgrade your cathedral-port LS engine with a fully assembled aluminum cylinder head engineered for improved airflow, durability, and performance potential. Featuring 210cc cathedral-style intake runners, 64cc heart-shaped combustion chambers, and 2.000" intake / 1.550" exhaust stainless steel valves, these cylinder heads are designed for performance-oriented LS1, LS6, 4.8L, 5.3L, and 5.7L LS engine combinations.

The 210cc runner design provides an excellent balance of airflow and 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 these heads an excellent choice for naturally aspirated street performance builds, muscle cars, performance trucks, street/strip applications, and LS swap projects.

Constructed from lightweight aluminum, these cylinder heads help reduce weight while dissipating heat more efficiently than comparable iron castings. Stainless steel valves, bronze valve guides, steel valve seats, and chromoly steel retainers provide durability for demanding performance applications, while the assembled design simplifies installation.

With valve spring capability supporting up to 0.660" lift, these assembled LS cylinder heads provide the airflow and valvetrain capacity needed for performance camshaft combinations and serious street performance builds.

Whether you're upgrading an LS1-powered Camaro, an LS6 Corvette, a performance truck, or a custom LS swap project, these assembled aluminum cylinder heads deliver the airflow, durability, and performance enthusiasts demand.

 

Cylinder Head Technology
Designed with 210cc cathedral-style intake runners, 64cc heart-shaped combustion chambers, and 2.000" intake / 1.550" exhaust stainless steel valves, these assembled aluminum cylinder heads are engineered to support increased airflow and combustion efficiency in cathedral-port LS engine applications. Bronze valve guides, steel valve seats, and chromoly retainers provide durability for demanding street and performance use.

Performance Benefits
The 210cc runner design helps maintain strong air velocity while supporting increased airflow, making these cylinder heads suitable for a wide range of naturally aspirated performance combinations. With valve spring capability supporting up to 0.660" lift, these heads are well suited for performance camshaft upgrades, LS swaps, muscle cars, street trucks, and street/strip applications.

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
• Fully assembled cylinder head
• Verify piston-to-valve and valvetrain compatibility before installation
• Not compatible with rectangle-port LS cylinder head applications
• Cylinder head sold individually (purchase quantity of 2 required for complete engine).

SPECIFICATIONS
Assembled: Yes
CNC Ported: No
Combustion Chamber Style: Heart
Combustion Chamber Volume: 64 cc
Deck Height: Standard
Deck Thickness: Standard
Exhaust Crossover: No
Exhaust Port Location: Standard
Exhaust Port Shape: D-port
Exhaust Valve Diameter: 1.550 in.
Exhaust Valve Material: Stainless Steel
Finish: Natural
Grade Type: Performance
Intake Port Location: Standard
Intake Port Shape: Cathedral
Intake Runner Volume: 210 cc
Intake Valve Diameter: 2.000 in.
Intake Valve Material: Stainless Steel
Material: Aluminum
Quantity: Sold Individually
Valve Guide Material: Bronze
Valve Seat Material: Steel
Valve Spring Maximum Lift: 0.660 in.
Valve Spring Retainer Material: Chromoly Steel
Valve Springs Included: No
Valves Included: Yes