MANLEY 11399-8 Sd Exhaust Valves Oal 1.625 5/16 5.640

( Brand: Manley ), ( Manufacturer Part Number: 11399-8 ), ( Type: Valves ), ( Performance Part: Yes )

Review MANLEY Sbc 1.625 Sd Exhaust Valves 5/16 5.640 Oal

Introducing the Manley 11399-8 1.625 SD Exhaust Valves, a high-performance aftermarket solution for your exhaust system. These valves are engineered for applications requiring enhanced durability and improved exhaust flow, making them an excellent choice for racing and high-performance applications.

The Manley 1.625 SD Exhaust Valves are designed with a 5/16 inch stem diameter and an overall length of 5.640 inches. The valves are made from premium materials, including a sodium-filled valve head and a stainless steel valve body. Sodium filling is a proven technique for increasing the thermal conductivity of the valve head, allowing it to more effectively dissipate heat and reducing the risk of valve failure. The stainless steel valve body ensures excellent strength and resistance to corrosion.

These valves feature a unique 1.625 inch diameter, which provides an optimal balance between flow and strength. The SD (Square Edge) design of the valve seat ensures a positive seal and improved flow compared to traditional round seat designs. The valve stems are designed to be compatible with standard valveguides and can be easily installed using standard tools.

The Manley 11399-8 1.625 SD Exhaust Valves are engineered to meet or exceed OEM specifications, ensuring a perfect fit and reliable operation. They are also designed to work seamlessly with aftermarket camshafts and other performance parts, making them an ideal choice for high-performance applications.

In summary, the Manley 11399-8 1.625 SD Exhaust Valves are a high-performance aftermarket solution for your exhaust system. They are made from premium materials, feature a unique SD valve seat design, and are engineered to meet or exceed OEM specifications. These valves are an excellent choice for racing and high-performance applications where durability and improved exhaust flow are critical.

Manley 11399-8 1.625 SD Exhaust Valves are aftermarket valves designed for high performance applications, specifically for engines with a 5/16 inch stem and a 5.640 inch overall length. These valves offer several advantages and disadvantages, which are as follows:

1. Enhanced Durability: Manley valves are known for their superior quality and durability. These valves are made from top-grade materials, ensuring they can withstand the rigors of high-performance use.

2. Improved Performance: The 1.625 inch diameter of these valves allows for better flow of exhaust gases, leading to improved engine performance. The SD (Sealed and Dressed) design also ensures a proper valve lash and a leak-free installation.

3. Better Fit and Finish: Manley offers a precise fit for their valves, ensuring a smooth installation process. Additionally, these valves have a polished finish, making them visually appealing.

1. Cost: Manley valves are generally more expensive than OEM valves. The 1.625 SD Exhaust Valves are no exception, making them a more expensive option for those on a budget.

2. Requires Professional Installation: These valves require a high level of expertise to install correctly. Improper installation can lead to engine damage, making it essential to have them installed by a professional.

3. Not Suitable for All Engines: These valves are specifically designed for engines with a 5/16 inch stem and a 5.640 inch overall length. They may not be compatible with other engine types, making it essential to verify compatibility before purchasing.

Manley 11399-8 1.625 SD Exhaust Valves offer several advantages, including enhanced durability, improved performance, and a better fit and finish. However, they come with disadvantages such as a higher cost, the need for professional installation, and limited compatibility with certain engine types.

If you're looking for high-performance exhaust valves and are willing to pay the premium price, these valves are an excellent choice. However, if you're on a budget or have an engine that is not compatible with these valves, you may want to consider other options.

If you're in the market for high-performance exhaust valves and have the budget for it, the Manley 11399-8 1.625 SD Exhaust Valves are an excellent choice. However, it's essential to ensure compatibility with your engine and have them installed by a professional to ensure proper installation and optimal engine performance.

Details:

Exhaust Valve - 1.625 in Head 5/16 Stem 5.640 Long Stainless Small Block Chevy Each. Manufacturer: MANLEY.

part #: 113998 prices

• $301.07-$438.78

specifications voomvalve:

• brand: Manley
• mpn: 11399-8
• type: Valves
• performance part: Yes

offer voomvalve:

• quantity: 2
• options: Ship-to-home
• availability: In Stock
• started: September 10, 2025
• sold: 0

shipping voomvalve:

• type: Fixed
• class: Standard
• service: Standard
• transit: 2-5 Days
• cost: $0.00

seller voomvalve:

• # reviews: 107478
• city: San Leandro, California
• rating: 99.6%

returns voomvalve:

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

general voomvalve:

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

payments voomvalve:

• other
• credit card: Discover
• wallet: Google-pay

Manley 11399-8 Is Similar To:

• Manley 11782-8 Sbm R m 2.020in Intake Valves (49.5% similar) Swirl polished and fully machined: the valves feature swirl polished under head areas fully machined combustion faces to optimize airflow efficiency. Material: stainless. Chrome stems and hard tips: stems hard tips are incorporated for enhanced longevity wear resistance. Type: intake...(July 12th, 2024)
• Manley Performance 10728-8 6 Street Master Flo 2.190ftft Intake Valves For Bb Chevy (40% similar) Missing 2 of the valves. Manley 10728-8 street master Flo 2.190'' intake valves for BB Chevy, opened box...(July 22nd, 2024)
• Manley 11591-8 Valve Exhaust Valve-fd Svo 1.880 (60.4% similar) Today, Manley manufactures crankshafts, connecting rods, pistons, push rods, rocker arms, valve springs, lash caps, guide plates, and many other oem high performance components. About the brand: Manley performance products have been tearing up streets and tracks worldwide since 1966 . Unleash your...(August 18th, 2024)
• Manley Performance 11621-8 For Chevy Ls-3 l-99 L-92 Head Small Block Race Master Exhaust Valves (40.8% similar) Since that time Manley has continued to evolve, using the knowledge they have gained since beginning and building on continue bring best engine components market...(August 26th, 2024)
• Manley A861-2 2 A861 Exhaust Engine Valve For Continental 124 140 162 209 (46.2% similar) They may have been in storage anywhere from 1-30 years. Or any other minor issue that does not make the part you are buying defective. Once purchased you own it. If any manufacturer warranty exists, it is between you and them. These items, although new, are not always crispy clean like...(August 28th, 2024)
• Manley A1585-4 4 A1585 Engine Exhaust Valve For 1965-1983 Ford 170 200 250-l6 (50.7% similar) 170, 2/2 50 6CYL. Sometimes the fitment is so old that it does not take into account trim, engine size or build dates. Ford, ford trek. They may have been in storage anywhere from 1-30 years. Manley part number A1585-4. If any manufacturer warranty exists, it is between you and them...(August 28th, 2024)
• Manley 42125-8 Standard Wear Caps For 0.3130 Inch 8mm Stem Valves (38.7% similar) Manley standard wear caps for 0.3130 - 8MM stem valves 42125-8,: caps: thru-hardened 4140 alloy steel: special heat treatment to HR 50-54: specifications...(August 28th, 2024)
• Manley Performance 42139-8 Standard 310 Inch Stem Valves 7.87mm Wear Caps 8 Pack (42% similar) Manley valve tip wear caps protect the of your stem in high-rpm engines. Stem DIAMETER.080 in. They are constructed from 4140 heat-treated alloy steel, strong enough to handle harsh racing conditions. Thick, standard type, set of 8, Manley .310IN stem valves 7.87MM wear caps 8 PCs, features...(August 28th, 2024)
• Manley 10577-1 Budget Performance Exhaust Valve (48.1% similar) American express...(September 2nd, 2024)
• Manley 11365-8 Domestic Race Series Exhaust Valve Set (57.1% similar) Chrome stems and hard tips: stems hard tips are incorporated for enhanced longevity wear resistance. Six years later, hank Manley unveiled its first line of top-of-the-line performance parts, which included stainless valves, forged pistons, camshafts, lifters, vanadium valve springs, push rods...(September 6th, 2024)
• Manley 11234-8 Sbc 2.055 Sd Int Valve 5 16 5.010 Oal (77.5% similar) Finish: swirl polish. Valve head diameter in: 2.055 in. Valves have undergone rigorous fatigue tests. Optimized combustion: swirl polished under head areas and fully machined combustion faces for improved airflow efficiency. Type: intake. Valve length in: 5.010 in. Manley 11234-8...(September 7th, 2024)