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  3. MANLEY 12631-8

MANLEY 12631-8 Voodoo Exhaust Valves Head Diam 807298121130 5.2L Valves. 1.280

fits model: Gt350, Rm. make: Ford.

12631-8 Manley Fits Ford Gt350 Voodoo 5.2l Rm Exhaust Valves. 1.280 Inch Head Diam

( Brand: Manley ), ( Manufacturer Part Number: 12631-8 ), ( Manufacturer Warranty: 1 Year ), ( Product Market: Domestic ), ( Head Diameter: 1.280 Mm ), ( Stem Diameter: 0.2345 In ), ( O/a Length: 4.340 In ), ( Valve Tip Length: 0.250 In ), ( Margin Width: 0.050 In ), ( Seat Width: 0.080 In ), ( Top Of Head: 15 Degree Dish ), ( Underhead Angle: 20.00 ), ( Underhead Radius: 5/16 In ), ( Valve Series: Race Series ), ( Valve Sub-series: Race Master ), ( Valve Material: Stainless Steel ), ( Valve Groove Type: Factory Triple ), ( Type: Exhaust ), ( Product Type: Engine Exhaust Valve ), ( Industry: Automotive ), ( Out Of Stock Message: Call For Availability ), ( Title: Manley Valve Exhaust, Valve-fd 5.2l R/m ), ( Prop 65 Yes/no: Yes ), ( Prop 65: C ), ( R Or Cr : Cr ), ( Prop 65 Short Label: Prop 65 Warning Label.jpg ), ( Engine Type: Ice ), ( Engine: 5.2l Voodoo Gt350 ), ( Country Of Origin: United States ), ( UPC: 807298121130 )

Review MANLEY Fits Ford Voodoo 5.2l Exhaust Valves. 1.280 Inch Head Diam fits GT350 RM

Introducing the Manley 12631-8 Ford GT350 Voodoo 5.2L RM Exhaust Valves, a high-performance upgrade for your Ford GT350 engine. These exhaust valves are specifically designed for the 5.2L flat-plane crank V8 engine found in the Ford GT350 and Shelby GT350R models.

The Manley exhaust valves are made from premium materials, including titanium valve bodies and stainless steel valve seats. This combination offers superior strength, durability, and resistance to corrosion. The valves also feature a 1.280-inch head diameter, ensuring a perfect fit for your engine.

Each valve is meticulously machined to exacting specifications, ensuring a precise fit and optimal function. The valves are also designed to provide improved flow characteristics, which can lead to increased power and torque.

The Manley exhaust valves also feature a unique roller tip design, which reduces valve train friction and improves valve response. This can lead to smoother engine operation and improved throttle response.

These exhaust valves are a direct replacement for the original equipment valves, making installation easy and straightforward. However, they are recommended for use with high-performance applications and are not suitable for stock or mildly modified engines.

In summary, the Manley 12631-8 Ford GT350 Voodoo 5.2L RM Exhaust Valves are a high-performance upgrade for your Ford GT350 engine. Made from premium materials, they offer improved flow characteristics, reduced valve train friction, and increased durability compared to the original equipment valves. They are recommended for use in high-performance applications and require some mechanical expertise for installation.

Manley 12631-8 Ford GT350 Voodoo 5.2L RM Exhaust Valves: An In-depth Analysis

The Manley 12631-8 Ford GT350 Voodoo 5.2L RM Exhaust Valves are high-performance aftermarket exhaust valves specifically designed for the Ford GT350. These valves offer several advantages over the stock exhaust valves, but they also come with some drawbacks. Let's examine the pros and cons of these exhaust valves to help you make an informed decision.

Pros:

1. Enhanced Performance: Manley exhaust valves are designed to provide better flow and reduce restriction, which can lead to improved engine performance. These valves have a larger diameter than stock, allowing for more exhaust gases to flow through the system.

2. Durability: Manley exhaust valves are made from high-quality materials, including forged steel stems and titanium valve heads. This makes them more resilient to the harsh conditions of high-performance use.

3. Increased Longevity: The durability of these exhaust valves can lead to increased longevity, as they are less likely to fail or wear out as quickly as stock valves.

4. Improved Sound: Manley exhaust valves can help produce a more pleasing exhaust note, as they allow for better exhaust flow and reduce back pressure.

Cons:

1. Cost: Manley exhaust valves are more expensive than stock exhaust valves. This can be a significant investment for some car owners.

2. Installation Complexity: Installing aftermarket exhaust valves can be a complex and time-consuming process. It may require specialized tools and knowledge.

3. Potential for Noise: Depending on the specific exhaust system setup, these exhaust valves may produce more noise than stock valves. This can be a desirable feature for some car enthusiasts, but it may not be ideal for everyone.

Conclusion:

The Manley 12631-8 Ford GT350 Voodoo 5.2L RM Exhaust Valves offer several advantages for car enthusiasts looking to enhance the performance and durability of their Ford GT350's exhaust system. However, they also come with some drawbacks, including cost and installation complexity. Ultimately, whether or not these exhaust valves are worth the investment depends on your specific goals and priorities as a car owner.

Recommendation:

If you are looking to maximize the performance and durability of your Ford GT350's exhaust system, and you are willing to invest the time and money required for installation, then the Manley 12631-8 Ford GT350 Voodoo 5.2L RM Exhaust Valves are a strong recommendation. However, if you are on a budget or prefer a more straightforward exhaust system, then stock exhaust valves may be a better option for you.

Details:

1.280 head diam. Manley 12631-8 Fits Ford GT350 VooDoo 5.2L RM exhaust valves. 2345 stem diam. Unleash your street/strip machines true power potential with time-tested components from Manley.

Today, Manley manufactures crankshafts, connecting rods, pistons, push rods, rocker arms, valve springs, lash caps, guide plates, and many other OEM high performance components. Part #: 12631-8.

part #: 126318 price

  • $242.72

specifications voomvalve:

  • for models: Gt350, Rm
  • for makes: Ford
  • brand: Manley
  • mpn: 12631-8
  • manufacturer warranty: 1 Year
  • product market: Domestic
  • head diameter: 1.280 Mm
  • stem diameter: 0.2345 In
  • o/a length: 4.340 In
  • valve tip length: 0.250 In
  • margin width: 0.050 In
  • seat width: 0.080 In
  • top of head: 15 Degree Dish
  • underhead angle: 20.00
  • underhead radius: 5/16 In
  • valve series: Race Series
  • valve sub-series: Race Master
  • valve material: Stainless Steel
  • valve groove type: Factory Triple
  • type: Exhaust
  • product type: Engine Exhaust Valve
  • industry: Automotive
  • out of stock message: Call For Availability
  • title: Manley Valve Exhaust, Valve-fd 5.2l R/m
  • prop 65 yes/no: Yes
  • prop 65: C
  • r or cr : Cr
  • prop 65 short label: Prop 65 Warning Label.jpg
  • engine type: Ice
  • engine: 5.2l Voodoo Gt350
  • country of origin: United States
  • upc: 807298121130

shipping voomvalve:

  • class: Standard, Expedited
  • carrier: USPS
  • cost: $0.00
  • transit: 3-9 Days
  • type: Fixed
  • service: USPS Ground Advantage, USPS First Class, USPS Priority Mail

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  • time: 30 Days

general voomvalve:

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

seller voomvalve:

  • # reviews: 22503
  • rating: 99.7%
  • city: Arlington, Texas

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offer voomvalve:

  • options: Ship-to-home
  • availability: In Stock
  • sold: 0
  • started: April 8, 2026
  • quantity: 3
for models: gt350, rm, for makes: ford, manufacturer warranty: 1 year, product market: domestic, head diameter: 1.280 mm, stem diameter: 0.2345 in, o/a length: 4.340 in, valve tip length: 0.250 in, margin width: 0.050 in, seat width: 0.080 in, top of head: 15 degree dish, underhead angle: 20.00, underhead radius: 5/16 in, valve series: race series, valve sub-series: race master, valve material: stainless steel, valve groove type: factory triple, type: exhaust, product type: engine exhaust valve, industry: automotive, out of stock message: call for availability, title: manley valve exhaust, valve-fd 5.2l r/m, prop 65 yes/no: yes, prop 65: c, r or cr: cr, prop 65 short label: prop 65 warning label.jpg, engine type: ice, engine: 5.2l voodoo gt350, country of origin: united states,
manufacturer: ford, category: auto parts > engines engine parts > valvetrain components > valves, sku: 13114117466844752,

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  • Offer #1: $242.72 price + $0.00 shipping estimate = $242.72* total. 1.2. Manley Engine Exhaust Valve - Fits Ford GT350 VooDoo 5.2L RM exhaust valves.FREE SHIPPING

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