LSX 215cc CNC Alum Heads Mongoose 65cc

The LSX 215cc CNC Alum Heads Mongoose 65cc cylinder heads represent a precision-engineered solution for builders seeking maximum performance from GM LS-series engine platforms. Designed for serious enthusiasts and professionals who demand superior airflow and combustion efficiency, these assembled aluminum heads deliver the flow characteristics required for high-output builds. Whether you're upgrading a street engine, preparing a track-focused powerplant, or optimizing a forced-induction application, the Mongoose architecture provides the foundational technology that separates marginal builds from exceptional performers.

Manufactured by Air Flow Research (AFR), these heads feature a 215 cubic centimeter intake runner with a 65 cubic centimeter combustion chamber, optimized for steady, responsive power across the RPM band. The CNC-ported aluminum construction ensures consistent, repeatable geometry that factory castings cannot match—critical for reliability and tuning predictability. Equipped with 2.020-inch intake and 1.600-inch exhaust valves paired with 1.290-inch valve springs, the assembly handles the thermal and mechanical stresses of modified engines while maintaining precision valve timing control. The angle-plug configuration enhances spark plug accessibility and allows for optimized ignition timing, a detail that separates engineered heads from basic alternatives. Supplied as a complete, ready-to-install pair, these heads arrive assembled and inspected, reducing build time and ensuring quality control at every specification point.

Technicians, engine builders, and performance shops standardize on Mongoose heads for naturally aspirated LS builds, supercharged applications, and nitrous-assisted platforms where predictable airflow and chamber efficiency drive final output numbers. Installation requires proper valve timing verification, gasket surface preparation, and torque-sequence adherence to maximize longevity and sealing integrity. These heads integrate seamlessly with stock or aftermarket LS valve trains, manifolds, and fuel systems, making them equally at home in a 5.3L refresh or a full 6.2L stroker program. Weighing 61 pounds per pair and sized at 12.1 x 8.8 x 24.2 inches, dimensional planning for shipping and workspace is straightforward. Specify the LSX 215cc CNC Alum Heads Mongoose 65cc when airflow, reliability, and engineering precision are non-negotiable.