Weiand 8023: Valley Pan Gasket — Necessary?

The Weiand 8023WND Stealth Intake Manifold is a high-performance part designed for Ford Small Block V8 engines. It features a high-rise dual-plane design with a square carburettor mounting flange and a power band of 1500-6800 RPM. While the manufacturer does not specifically mention the need for a valley pan gasket, some users have discussed their experiences with installing this part and offered varying opinions. Some suggest that a valley pan gasket is not necessary, especially if the exhaust crossover passage is blocked off, as it is primarily an oil barrier and not an insulator. However, others have shared that using a valley pan gasket can help keep the intake manifold cooler, potentially improving performance. Ultimately, the decision to use a valley pan gasket may depend on specific engine configurations and personal preferences.

The Weiand 8023WND Stealth Intake Manifold is IMCA-legal for 351 Windsor engines

The Weiand 8023WND Stealth Intake Manifold is a high-performance part designed for Ford Small Block V8 engines, specifically the 351 Windsor. This manifold is part of Weiand's Nostalgia Series, which are manufactured using original tooling and may exhibit minor appearance imperfections that do not affect performance. The 8023WND features a high-rise dual-plane design with a square carburetor mounting flange. It has a power band of 1500-6800 RPM and its port size is 1.82" in height and 1.05" in width. The front height of the manifold is 4.37", while the rear is 5.06".

The Weiand 8023WND is designed to increase airflow to your engine, resulting in more power. It is a great choice for street/strip vehicles as it can deliver power from idle up to 6,000 RPM. This intake manifold is also IMCA-legal, making it suitable for competition in IMCA-sanctioned races.

The Weiand 8023WND Stealth Intake Manifold is a high-quality, USA-made product that continues Weiand's legacy of innovation in intake manifold technology. Weiand developed the first-ever aluminum intake manifold in 1937 and has since been at the forefront of the industry, offering a range of products that deliver increased performance for enthusiasts and racers alike.

If you are in the market for an intake manifold for your 351 Windsor engine, the Weiand 8023WND Stealth Intake Manifold is an excellent choice, providing both performance and the peace of mind that comes with a reputable brand.

The Weiand 8023 Stealth Intake Manifold is designed for Ford Small Block V8s

The Weiand 8023 Stealth Intake Manifold features a high-rise dual-plane design with a port size of 1.82” height and 1.05" width. The front height is 4.37", while the rear is 5.06". It has a power band of 1500-6800 RPM and a square carburetor mounting flange. It fits GT-40 and TFS heads.

The Weiand 8023 Stealth Intake Manifold is a great choice for street/strip vehicles as it can make power from idle up to 6,000 rpm. It is also a good option for those looking for an original vintage intake, as Weiand continues to produce these lower-volume manifolds using the original tools.

This manifold has received positive reviews, with an average rating of 4.8 out of 5 stars on Amazon. Some customers have noted that it fits well, works great, and is a good value for the price. However, one review mentioned issues with incomplete milling and poor deburring, requiring additional cleaning before installation.

When purchasing the Weiand 8023 Stealth Intake Manifold, it is important to note that it is not legal for use in California or other states with similar regulations.

The Weiand 8023 Stealth Intake Manifold has a square carburettor mounting flange

The Weiand 8023 Stealth Intake Manifold is designed for Ford 351 Windsor engines. It features a high-rise, dual-plane design and includes a square carburettor mounting flange. The height of the manifold measures 4.37" at the front and 5.06" at the rear, with a port size of 1.82" in height and 1.05" in width. The power band of the manifold is 1500-6800 RPM.

The Weiand 8023 Stealth Intake Manifold is part of the Weiand Nostalgia Series of intake manifolds. These manifolds are made using the original tooling and may have minor appearance imperfections that do not affect the functionality of the part. These blemishes are a natural part of the casting process when using the original sand casting tooling. The Weiand Nostalgia series intakes are proudly cast and machined in the USA.

The Weiand 8023 Stealth Intake Manifold has received positive reviews, with customers praising its quality and fit. It is compatible with Holley Sniper EFI and has been noted to provide improved performance throughout the RPM range. When compared to competitor products, such as the Edelbrock, the Weiand manifold has been found to offer better fuel mileage and does not warp or lose its seal. It is also said to enhance the low-end torque of vehicles.

The Weiand 8023 Stealth Intake Manifold is a popular choice for those seeking high performance on a budget. Its superior construction allows for better alignment and port matching, which are areas where other brands may fall short. Overall, the Weiand 8023 Stealth Intake Manifold is a reliable and high-performing option for Ford 351 Windsor engines.

The Weiand 8023 Stealth Intake Manifold has a power band of 1500-6800 RPM

The Weiand 8023 Stealth Intake Manifold is designed for Ford 351W engines. It has a power band of 1500-6800 RPM, with some sources stating the upper limit as 6000 RPM. This high-rise, dual-plane manifold features a square carburetor mounting flange and is designed to fit stock, GT-40, and TFS cylinder heads.

The Weiand 8023 is part of the Weiand Nostalgia Series of intake manifolds, which are manufactured using the original tooling. This means that minor appearance imperfections may be present, but these do not affect the functionality of the part. These blemishes are a natural part of the casting process when using the original sand casting tooling. The Weiand Nostalgia series intakes are proudly cast and machined in the USA.

The Weiand 8023 Stealth Intake Manifold has received positive reviews from customers, who have praised its quality, fit, and performance power throughout the RPM range. It has been noted to provide a significant boost in power over the stock manifold for 351W engines. The manifold has also been said to enhance the low-end torque of vehicles.

When it comes to the valley pan gasket for the Weiand 8023, opinions vary. Some people choose to use it to prevent oil from caking under the intake, while others do not use it and instead ensure regular oil changes to avoid any issues. Ultimately, it is not a requirement, but it can help keep the intake cleaner over time.

The Weiand 8023 Stealth Intake Manifold is not intended to be used with a valley pan gasket

The valley pan gasket is only necessary when using the exhaust crossover passage. The exhaust crossover passage is a separate casting from the thermactor passage and sources its exhaust from one of the centre exhaust ports. The thermactor passage, on the other hand, is connected to the exhaust by holes in each exhaust port.

The purpose of the valley pan gasket is to prevent oil from baking underneath the manifold, around the exhaust crossover area. However, when using an aftermarket aluminium intake manifold, the valley pan gasket is not necessary as there is no additional source of heat.

Additionally, the valley pan gasket does not serve as an insulator to completely seal off the bottom of the manifold from engine heat. Instead, it is only an oil barrier for the exhaust crossover passage.

It is important to note that blocking off the exhaust crossover passage can improve cold engine driveability and emissions. This can be done by using a small, thin piece of sheet metal, such as stainless steel, between the cylinder head and the intake gasket. A layer of high-temperature RTV silicone should be applied to both sides of the sheet metal to ensure a proper seal.

By following these instructions and using the Weiand 8023 Stealth Intake Manifold without a valley pan gasket, you can achieve proper sealing and prevent potential oil leaks.

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