Brawler LS3 CNC-Ported Cylinder Heads

The Texas Speed Brawler LS3 cylinder heads offer a high-performance, cost-effective replacement for factory GM LS3-style cylinder head castings. Each head undergoes a full 257cc CNC porting program to optimize airflow, paired with a CNC 5-angle valve job for improved intake and exhaust efficiency. They come fully assembled with 2.165-inch lightweight hollow-stem intake valves and 1.60-inch stainless steel exhaust valves, along with a TSP/PAC dual .660-inch valve spring kit and titanium retainers. Designed for versatility, these heads are compatible with 2007-and-newer rectangle port LS-based engines, including 6.2L LS3, L99, LSA, LS9, L92, L9H, and L94 platforms. They also fit LS2, LQ4, and LQ9 blocks when utilized with a rectangle port intake manifold and LS3-style rocker arms. The castings are specifically engineered to accommodate 4.000-inch and larger bores, providing a robust foundation for various performance builds.