Manley Chevrolet Small Block Exhaust Valve Kit - 1.600in Head Dia. 5.165in O/A Length, 0.3415in Stem

These Manley Street Series exhaust valves start with a 1.600-inch diameter head and measure 5.165 inches overall in length, featuring a 0.3415-inch stem diameter. They are built from high-grade stainless steel, specifically XH-424 for exhaust applications, which gives you solid durability and longevity for your engine build. The chrome stems and hard tips add even more wear resistance, making these a good choice for stock or mildly modified street engines.

You'll notice the under-head areas are swirl polished, and the combustion faces are fully machined. This attention to detail helps improve airflow into the cylinder, which can contribute to better combustion efficiency. Manley offers different shapes, like the Street Master (straight stem) or Street Flo, so you can pick the best option for your specific engine setup.

If you're rebuilding the top end of your Chevrolet Small Block, these valves are a well-built component to consider. They are designed to handle the rigors of street use and provide an improved flow path for your engine.