Manley Chevrolet LS3 L-99 (L-92 Head) 1.600in Head Diameter Race Master Exhaust Valves (Set of 8)

These Manley Race Master exhaust valves are built with a 1.600-inch head diameter, specifically designed for Chevrolet LS3 and L-99 engines with L-92 heads. They are constructed from XH-426 stainless steel, a well-built material chosen for its ability to withstand the high temperatures and pressures found in performance engines operating under 8000 RPM. The chrome stems and hard tips add an extra layer of wear resistance, which is crucial for longevity in demanding applications like drag racing or oval track use.

Beyond the robust material, these valves feature swirl-polished under-head areas and fully machined combustion faces. This design work helps improve airflow into the cylinder and can contribute to better combustion efficiency. Manley offers these in a Race Master (straight stem) configuration, which is a popular choice for racers looking for reliable performance. They are also recommended for use in alcohol-fueled engines, where exhaust valves need to handle specific operating conditions.

This set includes eight exhaust valves, providing a complete solution for rebuilding or upgrading your LS3 or L-99 engine's cylinder heads. If you're working on a performance build that will see regular track time or operate at higher RPMs, these valves offer a solid option for ensuring consistent performance and durability.