GM LS 364X Cylinder Head Assembled

The GM LS 364X Cylinder Head Assembled by ENGINEQUEST is a precision-engineered engine component designed for builders and mechanics working with General Motors LS-platform powerplants. This fully assembled cylinder head eliminates the need for separate procurement and assembly of critical internal components, streamlining engine build timelines for high-performance applications, street builds, and restoration projects. Built to OEM tolerances and specifications, it serves as a direct-fit solution for LS-based engine families requiring reliable valve train geometry and combustion chamber design.

This assembled unit features ENGINEQUEST's precision casting and machining processes, with all internal valve train components, springs, and hardware pre-installed and pre-torqued to specification. The 364X designation indicates this head is engineered for optimal flow characteristics and combustion efficiency across the LS family's displacement range. At 27.86 lbs and measuring 11.15 × 8.6 × 23 inches, it integrates seamlessly into standard engine blocks with proper mating surfaces and bolt patterns. ENGINEQUEST's quality control ensures consistent valve lift, duration mapping, and sealing surfaces critical to cylinder pressure retention and performance output.

Engine builders, restoration shops, and LS-swap enthusiasts benefit most from the time savings and reduced assembly labor this pre-assembled head provides. Installation requires proper deck surface preparation, correct torque sequencing, and adherence to intake and exhaust manifold gasket specifications—standard procedures for any LS engine platform. Compatibility spans LS1, LS2, LS3, LS6, and LS7 block configurations, though verification with your specific engine block serial number and intended displacement is recommended before purchase to ensure proper fit and port matching.