Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 4.965in O/A Length, 0.3415in Stem

If you're rebuilding the top end of your Chevrolet small block engine, especially for racing applications under 8000 RPM, these Manley Race Series exhaust valves are a solid option. They're built to handle the stress of bracket, drag, or oval track racing, ensuring your engine breathes right when it matters most.

These valves are made from a strong stainless steel that holds up well, and they feature chrome-plated stems and hard tips to resist wear over time. The under-head areas are swirl polished and the faces are machined to help improve airflow into the combustion chamber, which can make a notable difference in how efficiently your engine runs. Manley offers different shapes, but this specific kit is for the exhaust side with a 1.625-inch head diameter and a 4.965-inch overall length.

These are also a recommended choice for exhaust valves in alcohol-fueled engines, where they've shown reliable performance. If you're putting together a performance engine, especially one that will see a lot of use, these valves are a well-built component to consider.