Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3715in Stem

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

These exhaust valves are made from XH-426 stainless steel, which is known for its strength and resistance to heat. The stems are chrome-plated and feature hard tips, adding extra wear resistance for improved longevity. Manley also swirl polishes the area under the head and fully machines the combustion face to help improve airflow into the cylinder. If you're running an alcohol-based fuel, these are specifically recommended for exhaust valve use.

This kit includes the exhaust valves with a 1.880-inch head diameter and a 5.522-inch overall length, featuring a 0.3715-inch stem diameter. Remember to check your specific cylinder head requirements to ensure these valves are the correct fit for your build.