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MANLEY 11831-8 Severe Pro Flo Exhaust Valves 807298053530

11831-8 Manley Severe Duty Pro Flo Exhaust Valves

( Brand: Manley ), ( Manufacturer Part Number: 11831-8 ), ( Part Type: Valve Exhaust ), ( UPC: 807298053530 )

Review MANLEY Severe Duty Pro Flo Exhaust Valves

The Manley 11831-8 Severe Duty PRO-Flo Exhaust Valves are a high-performance upgrade for serious racing applications. These valves are designed to withstand the extreme conditions and demands of high-horsepower engines, delivering superior durability and reliability.

Each valve is made from 356 aluminum alloy, which provides excellent strength and heat resistance. The valve stems are made from 4340 steel, a material known for its high tensile strength and toughness, ensuring that the valves can withstand the high loads and pressures generated in high-performance engines.

The valves feature a unique PRO-Flo design, which includes a large, flat valve seat area and a low-angle valve seat angle. This design reduces valve-to-piston contact, minimizing the risk of scuffing and reducing friction for improved engine performance. The valves also have a large valve diameter, which increases the flow rate of exhaust gases, further enhancing engine performance.

The Manley 11831-8 Severe Duty PRO-Flo Exhaust Valves come with titanium retainers, which are lighter and stronger than traditional steel retainers. The retainers are also designed with a precision-machined, multi-point locking system that ensures the valves remain securely in place under even the most demanding racing conditions.

These exhaust valves are suitable for use in high-performance engines with up to 1,500 horsepower, making them an excellent choice for serious racing applications. They are also available in both intake and exhaust configurations, allowing racers to upgrade both sides of their engine for maximum performance.

In summary, the Manley 11831-8 Severe Duty PRO-Flo Exhaust Valves are a high-performance upgrade for serious racing applications. They are made from robust materials, feature a unique PRO-Flo design for improved engine performance, and come with lightweight and strong titanium retainers. These valves are suitable for use in high-horsepower engines and are available in both intake and exhaust configurations.

Manley 11831-8 Severe Duty PRO-Flo Exhaust Valves are aftermarket exhaust valves designed for high-performance applications. These valves offer several benefits, but they also come with some drawbacks. Let's examine the pros and cons of buying Manley 11831-8 Severe Duty PRO-Flo Exhaust Valves.

Pros:

1. Enhanced Durability: These valves are made from high-quality materials, including hardened steel valve stems and nickel-plated valves. They are designed to withstand the extreme temperatures and pressures found in high-performance engines.

2. Improved Performance: Manley PRO-Flo Exhaust Valves offer improved flow characteristics, which can help to increase engine performance by reducing backpressure and improving the efficiency of the exhaust system.

3. Longer Valve Life: The hardened valve stems and nickel-plated valves help to extend the life of the valves, even in the most demanding conditions.

Cons:

1. Higher Cost: Manley PRO-Flo Exhaust Valves are more expensive than OEM valves. This may be a significant consideration for some buyers.

2. Installation Complexity: Installing aftermarket exhaust valves can be a complex process, especially if the engine is not easily accessible. It may require specialized tools and expertise.

3. Potential for Noise: Some users have reported that these valves can produce more noise than OEM valves, especially during deceleration.

Conclusion:

Manley 11831-8 Severe Duty PRO-Flo Exhaust Valves offer several advantages for high-performance applications, including enhanced durability, improved performance, and longer valve life. However, they also come with some drawbacks, including a higher cost, installation complexity, and potential for increased noise.

Recommendation:

If you are building a high-performance engine or are looking for aftermarket exhaust valves that can withstand the demands of extreme conditions, Manley 11831-8 Severe Duty PRO-Flo Exhaust Valves may be a worthwhile investment. However, be prepared for the higher cost and potential installation challenges. If you are looking for a more affordable option or are not concerned with extreme performance, OEM exhaust valves may be a better choice.

Details:

American Express.

part #: 118318 prices

  • $270.00-$341.22

specifications voomvalve:

  • brand: Manley
  • mpn: 11831-8
  • part type: Valve Exhaust
  • upc: 807298053530

offer voomvalve:

  • sold: 0
  • started: December 15, 2025
  • availability: In Stock
  • quantity: 10
  • options: Ship-to-home

shipping voomvalve:

  • service: Standard
  • class: Standard
  • transit: 3-8 Days
  • type: Fixed
  • cost: $0.00

general voomvalve:

  • condition: New
  • Engines Engine Parts > Valvetrain Components > Valves

returns voomvalve:

  • policy: Returns Accepted
  • paid by: Seller
  • time: 30 Days

seller voomvalve:

  • city: , Ohio
  • # reviews: 609173
  • rating: 98.8%

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  • credit card: Discover
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part type: valve exhaust,
category: auto parts > engines engine parts > valvetrain components > valves, sku: 11047203566929611,

Manley 11831-8 Is Similar To:

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2 offers $270.00–$341.22 USD
  • Offer #1: $270.00 price + $10.00 shipping estimate = $280.00* total. : 0.220 in. Valve Position: Exhaust.+$10.00 shipping
  • Offer #2: $341.22 price + $0.00 shipping estimate = $341.22* total. Each valve features chrome stems, hard tips, and swirl-polished underheads with fully machined combustion faces for superior airflow, efficiency, and wear resistance. Manley Valve - Exhaust, Valve-BBC P/F 1.880 Manley Severe Duty Valves deliver the ultimate in strength, reliability, and high-performance durability.FREE SHIPPING

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