Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.165in O/A Length, 0.3415in Stem

If you're rebuilding the top end of your Chevrolet Small Block engine, especially for racing applications under 8000 RPM, these Manley Race Series exhaust valves are a solid option. They are designed to handle the stress of bracket, drag, and oval track racing, ensuring your engine performs reliably when you need it most.

These valves are made from durable stainless steel, chosen for its ability to withstand high temperatures and pressures. The stems are chromed and feature hard tips, which adds to their wear resistance and overall lifespan. Manley also swirl polishes the areas under the head and fully machines the combustion faces. This attention to detail helps optimize airflow into the cylinder and can improve combustion efficiency. They are also a recommended choice for exhaust valves in alcohol-fueled engines, offering dependable performance in those specific conditions.

This kit includes exhaust valves with a 1.625-inch head diameter and a 5.165-inch overall length, featuring a 0.3415-inch stem diameter. Make sure to check the specific shape options, like Race Master or Race Flo, to best suit your engine's airflow needs.