fits model: Ls1, Ls2, Ls6, 600.

( Brand: Manley ), ( Manufacturer Part Number: 11365-1 ), ( Part Type: Valve Exhaust ), ( UPC: 807298048888 )
The Manley Racing Products 11365-1 Exhaust Valve is a premium component designed specifically for high-performance applications on LS1, LS2, and LS6 engines. This valve is engineered to deliver superior performance and reliability, making it a go-to choice for racers, hot rodders, and serious enthusiasts.
This Manley Exhaust Valve features a 1.600 inches (40.64 cm) diameter, making it suitable for larger exhaust ports. It comes with an 8mm (0.315 inches) stem length, allowing for a secure fit in your exhaust system. The valve is manufactured using Manley's proprietary A-356 aluminum alloy, which ensures strength, durability, and heat resistance.
Manley's Racing Products Exhaust Valve is designed with a full-bridge, green sand-molded stainless steel valve seat. This ensures a precise seal and excellent temperature stability, resulting in reduced emissions and improved engine efficiency. The valve's stem is non-sealing and is threaded with a UNF 14, allowing it to be kept cool during operation.
Additionally, this exhaust valve comes with a molybdenum-coated, 135 durability locked in stem, which enhances its durability and resistance to wear in high-performance applications. The valve also has a high-temperature, heat-resistant spring, ensuring reliable valve actuation under demanding conditions.
Manley Racing Products is a trusted name in high-performance engine components, and the 11365-1 Exhaust Valve is no exception. This valve offers the reliability, durability, and performance that serious enthusiasts and racers demand. By choosing this Manley Exhaust Valve, you can trust that your engine will deliver optimized power, improved efficiency, and unparalleled reliability.
Manley Racing Products' 11365-1 Race Master Exhaust Valves are designed for high-performance applications on Chevrolet LS1, LS2, and LS6 engines. These valves are oversized at 1.600 inches and come with 8mm stems and 0.3 lift for improved engine breathing and power output. To help you make an informed decision, here are some pros and cons of purchasing these racing exhaust valves:
Pros:1. High-performance design: The 1.600-inch diameter and oversized valve stem (8mm) increase the flow rate of exhaust gases. This results in better engine breathing, increased power output, and improved engine response.
2. Durability: ManleyValves are known for their high-quality materials and manufacturing processes that ensure durability and longevity. These particular valves are made from forged steel and nickel-chromium alloy material, which can withstand high temperatures and stress.
3. Reduced emissions: By optimizing exhaust flow and reducing turndown, these valves can help decrease harmful exhaust emissions. This is important for those seeking better engine efficiency and cleaner exhaust gases.
4. Competition-ready: These valves are suited for high-performance applications and competition use. They can help provide a noticeable power boost and are often used in racing and high-performance builds.
5. Precision-machined: Each valve is measured and inspected for machining tolerances to ensure accurate fitment and performance. This level of precision helps improve overall engine efficiency and reliability.
Cons:1.Expensive: Manley Racing Valves are more expensive than stock or OEM valves due to their high-performance specifications and manufacturing processes. Size, material, and manufacturing process all contribute to the increased cost of these valves.
2.Require valve springs and retainers/keepers: This part only includes the exhaust valves, and you will need to purchase new valve springs and retainers/keepers to install them. Make sure you have the correct springs and hardware for your LS engine application.
3.Skill level required: Installing these high-performance valves requires some level of mechanical expertise and knowledge of your engine. It may be best to have a professional mechanic or engine builder install them to ensure proper fitment and function.
4.May require valve guide modification: Depending on the engine block and previous modifications, you may need valve guide modification to install these oversized valves. Ensure your engine block can support the new valve size before purchasing.
5. Not for daily-driven vehicles: Since these valves are designed for high-performance applications, they may not be the ideal choice for daily-driven vehicles. They may not provide significant improvements in everyday driving, and the increased cost may not be worth it for non-performance driving.
Conclusion:Manley Racing Products' 11365-1 Race Master Exhaust Valves offer significant benefits for those seeking maximum engine performance, improved efficiency, and increased power output in high-performance applications on LS1, LS2, and LS6 engines. However, their high cost, required modifications, and specialized installation may make them a less practical choice for daily-driven vehicles or budget builds. Those considering these valves should be prepared for the additional cost, expertise, and modifications required for installation. Ultimately, if you're looking to maximize power and efficiency in a high-performance LS engine, Manley's Race Master Exhaust Valves are an excellent investment.
American Express. Race Master Exhaust Valve. Type: Exhaust Valve XH-426 Material.