Ferrea Chevrolet LS1 1.625in 0.313in 4.915in 24 Deg S-Flo Radial Grv Hollow Exhaust Valve - Set of 8

The 24-degree S-Flo Radial Groove design on these Ferrea exhaust valves is a key detail for improving airflow into your Chevrolet LS1 engine. Each valve measures 1.625 inches in diameter with a 4.915-inch overall length and a 0.313-inch stem. This specific sizing and groove pattern helps reduce turbulence and increase the volume of air entering the combustion chamber, which can lead to better performance.

Built for demanding applications, these valves are constructed with a hollow stem to reduce weight, allowing the valvetrain to operate more efficiently at higher RPMs. The material used is chosen for its strength and ability to withstand the high temperatures and pressures found in performance LS1 engines. This set includes eight valves, enough to replace all exhaust valves on a standard LS1 engine.