Chevy Big Block Aluminum Cylinder Head

• 345cc intake runners support high-horsepower BBC builds

• 124cc heart chambers promote efficient combustion

• Bare casting allows custom valvetrain selection

• Aluminum construction improves heat dissipation

Build your Big Block Chevy engine with a bare aluminum cylinder head engineered for maximum airflow and custom performance assembly. Featuring large 345cc intake runners, 124cc heart-shaped combustion chambers, rectangle intake ports, and raised rectangular exhaust ports, this cylinder head is designed for serious street performance, drag racing, marine, and high-horsepower Big Block Chevy applications.

The large runner design helps support the airflow requirements of larger displacement engines, making this casting an excellent choice for 454, 496 stroker, and other performance-oriented Big Block Chevy combinations. The heart-shaped combustion chamber design promotes efficient combustion while supporting improved throttle response, torque production, and horsepower potential.

Unlike assembled cylinder heads, this bare casting allows engine builders to select valve sizes, springs, retainers, and valvetrain components that match their specific camshaft profile, RPM range, and performance goals. This flexibility makes it ideal for custom engine builds, machine shop assembly, and specialized performance applications.

Constructed from lightweight aluminum, this cylinder head helps reduce weight while dissipating heat more efficiently than traditional cast iron heads. Whether you're building a street machine, drag car, marine engine, or custom high-performance Big Block Chevy combination, this bare cylinder head provides the airflow foundation needed for serious power production.

Cylinder Head Technology
Designed with 345cc intake runners, 124cc heart-shaped combustion chambers, rectangle intake ports, and raised rectangular exhaust ports, this aluminum cylinder head is engineered to support the airflow demands of larger displacement Big Block Chevy engines. The bare casting configuration allows builders to customize the valvetrain and cylinder head assembly to match specific engine requirements.

Performance Benefits
The large runner and port design help maximize airflow and cylinder filling, supporting stronger torque production and increased horsepower potential. Aluminum construction helps reduce weight and dissipate heat more efficiently than traditional cast iron cylinder heads, making this casting well suited for high-performance street, racing, and marine applications.

Is this a bare or assembled cylinder head?
This is a bare aluminum cylinder head and requires final assembly.

What size intake runners does this head use?
This cylinder head features 345cc intake runners.

What size combustion chambers does this head use?
It utilizes 124cc heart-shaped combustion chambers.

What type of intake ports does this head use?
The head features rectangle intake ports.

What type of exhaust ports does this head use?
The casting uses raised rectangular exhaust ports.

Why choose a bare cylinder head?
Bare heads allow builders to select valves, springs, retainers, and valvetrain components that match their specific engine combination.

Can this head be used on a 454 Big Block Chevy?
Yes, it is designed for compatible Big Block Chevy engine combinations including 454 applications.

Is this a good choice for a 496 stroker build?
Yes, the large 345cc runner design is well suited for larger displacement BBC combinations.

Are valve guides installed?
Yes, the casting includes bronze valve guides.

Is this cylinder head aluminum?
Yes, it is constructed from aluminum for reduced weight and improved heat dissipation.