These Chevrolet LS 799/243 Cathedral Port Cylinder Heads are a popular choice for LS engine builds, replacements and performance projects. Featuring the sought after cathedral port design, these heads are well suited to a range of Gen III and Gen IV LS applications and offer a strong foundation for street, performance and engine swap builds.
The 243 and 799 castings are closely related LS cylinder head designs and are known for their efficient cathedral shaped intake ports and strong performance potential. A great option for enthusiasts looking to upgrade, replace or complete an LS engine package.


















