fits model: 390, Quad. make: Cadillac.

( Brand: Weiand ), ( Manufacturer Part Number: WCA-408 ), ( Material: Aluminum ), ( Country/region Of Manufacture: United States ), ( Universal Fitment: No ), ( Vintage Part: Yes ), ( Type: Intake Manifold )
The Weiand WCA-408 dual quad intake manifold is a high-performance intake solution engineered specifically for Cadillac engines with displacements ranging from 331 to 390 cubic inches, such as the 365 HP 346 Cubic Inch V8 engine. manufactured from premium aluminum, this intake manifold is both lightweight and robust. It boasts a dual quad configuration, which means it's capable of accommodating two quad-bore throttle bodies. take note that the use of quad-bore throttle bodies is not only aesthetically appealing but also beneficial in terms of optimal airflow distribution.
One of the key features of the WCA-408 is its precise design, which allows for excellent runner length and port volume. The runners are carefully tuned to deliver an ideal air/fuel mixture to each cylinder, improving combustion efficiency and overall engine performance. Fed by individual plenums, the intake manifold ensures a smooth and consistent airflow, contributing to improved torque and horsepower.
The Weiand WCA-408 intake manifold also incorporates additional features such as recessed fuel rails and raised bosses for easier installation of the fuel injectors. The intake manifold gasket surface is machined to a lazer-straight, ensuring a perfect seal with the cylinder head and minimizing leaks that could adversely impact performance. The manifold bolts directly to the cylinder heads, requiring no additional adapter plates, simplifying the installation process and reducing the potential for assembly errors.
During the manufacturing process, each manifold undergoes rigorous testing to ensure it meets the highest quality standards. You can trust that the Weiand WCA-408 dual quad intake manifold is not just an upgrade in appearance, but a substantial performance enhancement for your Cadillac engine.
The Weiand WCA-408 CADILLAC 331 365 390 Dual Quad Intake Manifold is a popular aftermarket intake manifold used in custom hot rod and restorations of vintage Cadillac engines. In this analysis, we will discuss the benefits and drawbacks of installing this intake manifold to help you make an informed decision.
Pros:1. Increased Horsepower and Torque: The primary reason for installing a Weiand WCA-408 intake manifold is to maximize engine performance. This intake manifold is designed to optimize airflow and fuel delivery resulting in increased horsepower and torque.
2. Authentic Design: If you are working on a classic or custom Cadillac build, the Weiand WCA-408 intake manifold provides an authentic look to the engine bay as it closely resembles the original Cadillac factory intake.
3. Improved Engine Aesthetics: The dual-quad setup of this intake manifold adds a unique visual appeal and can be a head-turner in your custom build.
4. Easily Available Parts: Weiand is a well-established brand known for their performance parts. The availability of replacement parts and expertise in the market can save you time and any potential headaches in case of any future issues.
5. Simple Installation: The installation process of the Weiand WCA-408 intake manifold is relatively straightforward for experienced hot rodders, and the documentation provided by Weiand is easy to follow.
Cons:1. Complexity: Compared to a single-plane intake, the installation of a dual-quad intake like the Weiand WCA-408 is more time-consuming and complex due to its setup.
2. Cost: This intake manifold comes with a higher price tag compared to others in the market. However, the performance gains may justify the cost for some builders.
3. Fuel Pressure Regulator Adjustments: Due to the dual-quad setup, you may need to adjust fuel pressure regulator settings to maintain proper fuel pressure distribution.
4. Tuning Requirements: A dual-quad intake like the Weiand WCA-408 can be more difficult to tune than a single-plane intake, requiring more time, money, and expertise.
Conclusion:The Weiand WCA-408 CADILLAC 331 365 390 Dual Quad Intake Manifold is an excellent investment for those seeking improved engine performance and aesthetic appeal for their custom or vintage Cadillac build. While it comes with a higher price tag and complexity compared to single-plane intakes, the potential horsepower gains, the unique look, and the availability of support from the Weiand community make this component an exceptional choice for Cadillac enthusiasts.
Installing a Weiand WCA-408 intake manifold is an investment in both performance and originality, providing a valuable addition to classic or modern Cadillac engines. By carefully considering the advantages and disadvantages presented in this analysis, you will be well-equipped to make a decision that suits your build goals.
Finish has patina. Flat rate shipping cost is to the lower 48 states of USA only. It uses 2 AFB type carbs. This intake fits 1949-1962 Cadillac 331, 365 and 390 engines used in many types of Hot Rod's.