Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem

If you're building a high-performance Big Block Chevy engine for serious drag racing, marine use, or restricted circle track competition, you need exhaust valves that can handle extreme heat and force. Manley's Extreme Duty Series valves are designed specifically for these demanding applications, offering a robust solution for engines pushing the limits.

These valves are constructed from Manley's XH-432 XtremeAlloy, a material chosen for its exceptional strength and heat resistance under extreme conditions. They feature chrome stems and hard tips, which significantly boosts their longevity and wear resistance, crucial for engines that see a lot of hard use. The under-head areas are swirl polished to help improve airflow, and the combustion faces are fully machined to optimize combustion efficiency. This attention to detail in material and design means these valves are built to last and perform when you need them most.

When you're investing in a high-performance engine build, using components like these Manley exhaust valves ensures you're starting with well-built parts designed for the job. They are a solid option for anyone looking to maximize their engine's potential in specialized, high-stress environments.