Chevy Big Block Flat Tappet Assembled Aluminum Cylinder Head

• 345cc intake runners support high-horsepower BBC builds

• Flat tappet springs matched for compatible camshaft setups

• 124cc chambers support large displacement combinations

• Fully assembled aluminum construction saves installation time

Upgrade your Big Block Chevy engine with a fully assembled aluminum cylinder head engineered for flat tappet camshaft applications. Featuring 345cc intake runners, 124cc heart-shaped combustion chambers, and rectangle intake ports, these performance cylinder heads are designed to support the airflow demands of 396, 402, 427, 454, 468, 496, and 540 cubic inch Big Block Chevy engine combinations.

The large runner design helps maximize airflow and cylinder filling, supporting stronger torque production, improved throttle response, and increased horsepower potential across a wide RPM range. The rectangle intake ports and performance-oriented chamber design make these heads an excellent choice for street performance vehicles, muscle cars, hot rods, drag racing applications, and marine engines.

Constructed from lightweight aluminum, these cylinder heads help reduce weight while dissipating heat more efficiently than traditional cast iron heads. Stainless steel valves, bronze valve guides, steel valve seats, and matched flat tappet valve springs provide durability and reliability for demanding performance applications.

Delivered fully assembled with valves and valve springs installed, these Big Block Chevy cylinder heads provide a strong performance foundation for 454 street engines, 496 stroker combinations, and larger displacement BBC builds seeking increased airflow and proven aluminum cylinder head performance.

Whether you're restoring a classic muscle car, upgrading a performance street machine, or assembling a high-output Big Block Chevy engine, these assembled aluminum cylinder heads deliver the airflow capacity and durability serious BBC enthusiasts demand.

Cylinder Head Technology
Designed with large 345cc intake runners, 124cc heart-shaped combustion chambers, and rectangle intake ports, these assembled aluminum cylinder heads are engineered to support the airflow requirements of larger displacement Big Block Chevy engines. Stainless steel valves, bronze valve guides, steel valve seats, and matched flat tappet valve springs provide durability for street and performance applications.

Performance Benefits
The large runner and rectangle port design help support increased airflow and improved cylinder filling, making these cylinder heads well suited for larger displacement Big Block Chevy combinations. Aluminum construction helps reduce weight and dissipate heat more efficiently, supporting improved throttle response, stronger torque production, and greater horsepower potential.

Will these cylinder heads fit a Chevy 454?
Yes, these heads are designed for Big Block Chevy 454 applications.

Can these heads be used on a 496 stroker?
Yes, they are commonly used on 496 cubic inch Big Block Chevy combinations.

Can these heads be used on a 540 Big Block Chevy?
Yes, the 345cc intake runner design makes them suitable for larger displacement BBC builds.

Are these cylinder heads fully assembled?
Yes, valves and valve springs are pre-installed.

What size intake runners do these heads have?
These heads feature 345cc intake runners.

What size combustion chambers do these heads use?
These cylinder heads feature 124cc combustion chambers.

What type of intake ports do these heads use?
They feature rectangle intake ports.

What type of combustion chambers do these heads use?
These heads utilize a heart-shaped combustion chamber design.

Are these designed for flat tappet camshafts?
Yes, these heads are configured for flat tappet camshaft applications.

What valve materials are used?
These heads feature stainless steel intake and exhaust valves.

What valve guide material is used?
Bronze valve guides are used for durability and performance.

Are these suitable for street and racing applications?
Yes, they are designed for street performance, marine, and street/strip applications.