M311 LS3 Assembled Aluminum Cylinder Head

The Frankenstein Engine Dynamics 113004 - M311 LS3 Cylinder Head is an assembled, high-performance aluminum cylinder head engineered for GM LS3 engines. This unit boasts a substantial 273 cc intake runner volume and a 71 cc chamber volume, contributing to significant airflow improvements. Constructed from durable aluminum, this cylinder head is fully assembled and ready for installation. Key specifications include 2.165 inch intake valves and 1.600 inch exhaust valves, with CNC machined combustion chambers and intake/exhaust runners for optimal performance. The head also features 11-degree intake and exhaust valve angles and stock port locations for the intake and exhaust. Additional details provided by the manufacturer indicate a 273 cc intake runner volume, 71 cc combustion chamber volume, and specific port dimensions. The intake port is square with dimensions of 2.670 in height and 1.400 in width, while the exhaust port is round with dimensions of 1.700 in height and 1.860 in width.