LS1 S/D 1.600 Exhaust Valves

The LS1 S/D 1.600 Exhaust Valves from MANLEY are precision-engineered components tailored for serious LS engine builders and performance enthusiasts. These valves are designed to enhance reliability and flow characteristics in high-RPM applications, where standard valve designs may limit engine performance. Whether you're constructing a street performer or a competition engine, investing in quality exhaust valves is crucial for achieving optimal power delivery.

Featuring a 1.600-inch head diameter, these valves are specifically sized to optimize the stock LS1 cylinder head port geometry. The sodium-filled design improves heat transfer from the valve seat to the valve stem, which is essential for high-boost or nitrous applications. This technology allows for a balance of durability and performance, enabling higher RPM limits compared to solid-stem alternatives.

These valves are ideal for LS1 and LS-based engine combinations, particularly for builders upgrading to performance camshafts or higher compression ratios. They provide a significant advantage in applications where factory exhaust valve margins may become a limitation. By choosing the LS1 S/D exhaust valves, builders can ensure enhanced performance and longevity in their engine builds.