BBC 320cc Alum Cyl Head Assembled

The FLOTEK BBC 320cc Alum Cyl Head Assembled is a precision-engineered aluminum cylinder head designed for Big Block Chevy engine builds, offering seasoned mechanics and engine builders a proven foundation for high-performance applications. Built to exacting tolerances, this assembled unit eliminates the need for individual component sourcing and custom assembly work, reducing downtime and ensuring consistent valve train geometry. Whether you're restoring a classic muscle car, constructing a street performance engine, or preparing a heavy-duty platform for increased displacement and airflow, this fully assembled head arrives ready for immediate installation.

Engineered with a 320 cubic centimeter intake port volume and 133 cubic centimeter combustion chamber, this cylinder head maximizes fuel charge density and promotes efficient cylinder filling across a wide RPM band. The dual valve configuration features 2.250-inch intake and 1.880-inch exhaust valves, paired with 1.620-inch valve springs tuned for reliable sealing and consistent lift profiles under sustained load. The angled spark plug design optimizes flame front propagation and ignition efficiency, while the aluminum construction reduces overall engine weight without compromising structural integrity—critical for applications demanding improved power-to-weight ratios and thermal management.

This assembled head serves builders and mechanics working on Big Block Chevy engines in street, bracket racing, marine, and industrial duty cycles. The pre-assembled configuration significantly shortens engine build timelines while minimizing the risk of valve spring binding, improper valve seat seating, or chamber volume variances that plague custom assembly operations. Installation requires standard Big Block Chevy gasket sets and fastener specifications; professional builders should confirm compatibility with existing block decks and confirm valve-to-piston clearance when combined with specific piston and cam combinations. Weighing 42.06 lbs and measuring 10.5 x 8.5 x 24.3 inches, it ships securely and integrates seamlessly into modular engine assembly workflows.