SBC S/D 1.625in Exhaust Valve

The SBC S/D 1.625in Exhaust Valve from Manley is specifically designed for small-block Chevy engines that require high-flow exhaust scavenging and reliable sealing under performance conditions. This valve is essential for builders looking to enhance engine performance in both street and track applications. Its design addresses the limitations of stock valves, ensuring optimal exhaust gas evacuation.

Manufactured from premium stainless steel, this valve is engineered to withstand extreme temperatures and repeated pressure cycling without warping or distortion. The 1.625-inch head diameter is optimized for maximum flow capacity, while the valve's stem geometry and seat angles are ground to OEM tolerances for consistent sealing and minimal blowby. The S/D designation indicates a standard-duty specification suitable for naturally aspirated and moderate forced-induction applications.

Builders restoring or upgrading small-block Chevy cylinder heads will find this exhaust valve indispensable for any application that requires matching exhaust system improvements alongside intake manifold or carb upgrades. Its robust construction and precise engineering make it a reliable choice for enhancing engine performance.