Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3715in Stem

When you're rebuilding the top end of your Chevrolet Big Block, you need parts you can trust. This kit from Manley Performance gives you a pair of their Race Series exhaust valves, designed for engines that see a lot of action, like those in bracket, drag, and oval track racing, especially when running up to 8000 RPM. These aren't just any valves; they're built to handle the heat and stress of performance applications.

What you get here are exhaust valves made from a high-quality stainless steel, specifically the XH-426 alloy, which is known for holding up well under tough conditions. They also feature chrome-plated stems for better wear resistance and hard tips to extend their life. The under-head area is swirl polished to help smooth out airflow, and the combustion face is fully machined to help with efficiency. If you're running alcohol fuel, these are a recommended choice for exhaust valves, offering solid performance.

This kit includes the exhaust valves themselves, with a 1.940-inch head diameter and an overall length of 5.522 inches. The stem diameter is 0.3715 inches. Remember to refer to the manufacturer's installation instructions for proper fitting and setup.