Chevy Big Block Flat Tappet Assembled Aluminum Cylinder Head

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.

COMPATIBLE WITH
CHEVROLET BIG BLOCK V8
• 6.5L / 396 in³
• 6.6L / 402 in³
• 7.0L / 427 in³
• 7.4L / 454 in³
• 8.1L / 496 in³ stroker combinations (application-specific verification required)

COMMON VEHICLE APPLICATIONS
Chevrolet Chevelle
Chevrolet Camaro
Chevrolet Nova
Chevrolet El Camino
Chevrolet Impala
Chevrolet C10
Chevrolet C/K Series Trucks

NOTES
Fits Mark IV Big Block Chevy engines
Designed for flat tappet camshaft applications
Rectangle intake port design
Fully assembled cylinder heads
Verify component compatibility before installation
Not compatible with Small Block Chevy, LS, or LT engines
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: 124 cc
Deck Height: Standard
Deck Thickness: Standard
Exhaust Crossover: No
Exhaust Port Height: 1.700 in.
Exhaust Port Location: Standard
Exhaust Port Shape: Square
Exhaust Port Width: 1.500 in.
Exhaust Valve Material: Stainless Steel
Finish: Natural
Grade Type: Performance
Intake Port Height: 2.300 in.
Intake Port Location: Standard
Intake Port Shape: Rectangle
Intake Port Width: 1.400 in.
Intake Runner Volume: 345 cc
Intake Valve Material: Stainless Steel
Material: Aluminum
Quantity: Sold Individually
Valve Guide Material: Bronze
Valve Springs Included: Yes
Valves Included: Yes