Chevy Big Block Hydraulic Roller Assembled Aluminum Cylinder Head

Upgrade your Big Block Chevy with assembled aluminum cylinder heads engineered to improve airflow, combustion efficiency, and horsepower potential. Featuring 345 cc intake runners, 124 cc 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.

Assembled Valve Train Setup
Delivered assembled with matched valves, springs, retainers, locks, and seals where specified, helping simplify installation for hydraulic roller camshaft applications.

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
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 / El Camino (Big Block equipped)
Chevrolet Camaro (Big Block equipped or swapped)
Chevrolet C10 / C/K Trucks (Big Block equipped)
Chevrolet Impala / Caprice (Big Block equipped)
Marine, street/strip, and performance Big Block Chevy builds

NOTES

Designed for Big Block Chevy engine platforms.

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

Verify intake manifold, exhaust header, valve lift, and piston-to-valve clearance.

Not compatible with Small Block Chevy, LS, or LT engine platforms.

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 Seat Material: Steel
Valve Springs Included: Yes
Valves Included: Yes