Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.040in O/A Length, 0.3110in Stem

Manley Performance is well-known for making strong engine components for racing applications. This kit features their Race Series exhaust valves, which are built for engines running up to 8000 RPM, making them a solid option for bracket, drag, and oval track racers. These valves are specifically designed for Chevrolet Small Block engines and measure 1.625 inches across the head with an overall length of 5.040 inches and a 0.3110-inch stem diameter.

Constructed from durable stainless steel, these exhaust valves are also treated with chrome stems and hard tips to improve wear resistance and longevity. The under-head areas are swirl polished, and the combustion faces are fully machined. This design helps optimize airflow and combustion efficiency, which can make a notable difference in engine performance. Manley also recommends these specific valves for use in alcohol-fueled engines, highlighting their ability to handle demanding conditions reliably.

When rebuilding the top end of your Chevrolet Small Block, choosing reliable valves is key. This kit offers a well-built option with features aimed at improving airflow and durability under high-RPM use.