Upgrade your GM LS with bare aluminum cylinder heads engineered to improve airflow, combustion efficiency, and horsepower potential. Featuring 210cc intake runners, 64cc combustion chambers, these heads are built for street, strip, and performance engine builds that need better breathing than stock castings.

Improved Airflow & Power Potential
Optimized runner and chamber design helps move more air through the engine, improving throttle response, torque, and top-end horsepower potential across the RPM range.

Bare Head Build Flexibility
Bare cylinder head configuration gives builders the flexibility to select valves, springs, retainers, and hardware matched to the exact camshaft, RPM range, and power goal.

Aluminum Construction
Lightweight aluminum construction reduces weight compared to factory iron heads while improving heat dissipation for more consistent performance under demanding conditions.

Built for Street & Performance Builds
Ideal for performance rebuilds, restorations, and upgraded engine combinations. Always verify piston-to-valve clearance, camshaft compatibility, intake manifold fit, and header clearance before final installation.

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 Corvette (LS1 / LS6 equipped)
Chevrolet Camaro / Pontiac Firebird (LS1 equipped)
Pontiac GTO (LS1 / LS2 equipped with compatible setup)
GM Silverado / Sierra / SUV LS-based swaps
Popular LS swap applications using cathedral-port intake manifolds

NOTES

Designed for cathedral-port LS intake manifold applications.

Verify intake manifold, rocker arm, valve cover, head gasket bore, and head bolt/stud compatibility before installation.

Cylinder head sold individually (purchase quantity of 2 required for complete engine).

Not compatible with rectangular-port LS3/L92-style intake manifolds, Gen V LT direct-injection engines, Gen I SBC, or Big Block Chevy engines.

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