M311 LS3 Cylinder Head Rect-Port Bare

The M311 LS3 Cylinder Head Rect-Port Bare provides a high-performance foundation for GM LS-series engines used in demanding operational environments. Designed by Frankenstein Engine Dynamics, this component is essential for fleet maintenance personnel tasked with keeping tactical response vehicles at peak readiness. This bare cylinder head allows for custom valve train selection to meet specific mission requirements or standardized performance specifications. It serves as a durable replacement or upgrade for units requiring maximum structural integrity under heavy loads.

Engineered with precision, this M311 LS3 Cylinder Head Rect-Port Bare features a 273cc intake runner and a 71cc combustion chamber to optimize volumetric efficiency. The aluminum construction ensures superior thermal management, which is critical for preventing overheating during prolonged idling or high-stress transport scenarios. The rectangular port design is specifically tailored for LS3 architectures, providing the necessary airflow to support high-output applications. This bare unit is machined to accept 2.165-inch intake and 1.600-inch exhaust valves, allowing for precise customization of the internal components.

Professional technicians and fleet mechanics will find the M311 LS3 Cylinder Head Rect-Port Bare to be a versatile solution for rebuilding or enhancing GM LS-based powerplants. Its compatibility with standard LS3 blocks makes it a straightforward choice for maintaining vehicle uptime in specialized fleets. This component is ideal for those who require a high-strength aluminum head that can withstand the rigors of both field duty and high-stress environments. Proper installation ensures that your tactical or utility vehicle remains operational when performance and reliability are non-negotiable.