LS3 Enforcer Cyl. Head 238cc-Assembled-72cc

The LS3 Enforcer Cylinder Head 238cc-Assembled-72cc from Air Flow Research is a high-performance, ready-to-install cylinder head assembly designed for LS-platform engine builders seeking maximum flow efficiency and combustor optimization. This assembled unit eliminates the need for individual component sourcing and lengthy machine work, making it ideal for law enforcement, military vehicle programs, and civilian performance applications where reliability and rapid deployment matter. The 238cc intake runner volume paired with the 72cc combustion chamber represents a balanced design optimized for both naturally aspirated and forced-induction LS3 applications.

AFR's engineering focuses on precise port geometry that improves air velocity and fuel atomization across the RPM band, critical for sustained performance under tactical duty cycles. The pre-assembled configuration means intake and exhaust valves, springs, retainers, and keepers arrive installed and dynamically balanced, reducing field assembly errors and cutting build time significantly. The 238cc chamber size is engineered to work seamlessly with LS3 block casting characteristics, ensuring proper gasket sealing and combustion efficiency without requiring extensive head decking or additional machine work. At 33.575 lbs, the casting is durable aluminum with ductile iron valve seats, providing the thermal stability needed in high-demand engine environments.

Professionals running LS3 powerplants in pursuit vehicles, emergency response units, or heavy-duty off-road platforms benefit from the plug-and-play readiness of this assembled head. Installation requires proper head bolt torque sequencing and compatible gasket selection; the unit accepts standard LS-pattern intake manifolds and exhaust headers. Compatibility extends to both carbureted and fuel-injected LS3 engines, making it a versatile choice for retrofit and new-build applications where proven performance and minimal downtime are non-negotiable. Verify deck height and valve cover clearance on your specific engine block before installation.