Ferrea GM ECOTEC 31.1mm 5.96mm 101.5mm 22 Deg Flo +1mm Competition Plus Exhaust Valve - Set of 8

If you're rebuilding the top end of your GM Ecotec engine for improved performance, these Ferrea Competition Plus exhaust valves are a solid choice. This set includes eight valves, each measuring 31.1mm in diameter with a 5.96mm stem and a total length of 101.5mm. They feature a 22-degree seat angle and are designed with Ferrea's Flo+1mm profile, meaning they are 1mm larger in diameter than stock to help improve airflow into the combustion chamber.

Ferrea uses high-grade materials for their Competition Plus line, ensuring these valves can handle the increased stress of performance applications. The material choice and manufacturing process contribute to their durability and ability to maintain their shape under high temperatures and pressures. The +1mm sizing is a common upgrade for Ecotec engines looking to maximize cylinder head flow, especially when paired with porting and other modifications.

When installing these valves, ensure your valve guides are properly sized for the 5.96mm stems and that the valve seats are cut to accommodate the 31.1mm diameter and 22-degree angle. Proper installation is key to realizing the full benefit of these performance components.