Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in 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 option. They're built to handle the stress of bracket, drag, or oval track racing, ensuring your engine breathes right when it counts.

These valves are made from stainless steel, which is a strong choice for durability. The stems are chromed and have hard tips, adding to their wear resistance over time. You'll also notice the under-head areas are swirl polished and the combustion faces are fully machined. This design work helps optimize airflow into the cylinder, which can improve combustion efficiency. They're even recommended for alcohol-fueled engines, showing they can handle demanding conditions.

When you're putting together a performance engine, the details matter. These valves are a well-built component that can make a difference in how your engine performs and lasts.