Manley Chevrolet Big Block Exhaust Valve Kit - 1.800in Head Dia. 5.930in O/A Length, 0.3415in Stem

Manley Performance has built a solid reputation for making strong engine components, especially for racing applications. This Extreme Duty Series exhaust valve kit is a prime example, designed for the intense demands of Top Fuel drag racing, high-performance marine engines, and competitive circle track racing. If your Big Block Chevy is pushing the limits where extreme force and heat are constant factors, these valves are built to handle it.

The core of these valves is their XH-432 XtremeAlloy construction, a material chosen specifically for its ability to withstand extreme heat and stress. You'll also notice the chrome stems and hard tips, which are there to significantly boost longevity and resist wear, even under harsh operating conditions. Beyond just durability, Manley has focused on performance too. The under-head areas are swirl polished to help smooth airflow, and the combustion faces are fully machined. This attention to detail helps improve how efficiently your engine breathes and burns fuel, making a real difference when every bit of power counts.

This kit includes everything you need for the exhaust valves. When you're rebuilding or upgrading a high-stress engine, using parts like these Manley valves is crucial for reliability and performance. Make sure to refer to your engine's specific service manual for installation procedures and any other components you might need for a complete rebuild.