3866948 GM ORIGINAL Cast Holley 396 360 427 390 Corvette

Review GM ORIGINAL 396/360 427/390 Cast Orig. Holley Pickup Only for CORVETTE 396 360 427 390 1966

The Holley GM 3866948 A-3-6 1966 396/360 427/390 Corvette Cast Aluminum Street Fuel System is a high-performance fuel system designed specifically for 1966 Chevrolet Corvette engines equipped with 396/360 or 427/390 cubic inch engines. This complete fuel system is manufactured using cast aluminum, ensuring durability and reliability for your classic muscle car.

The heart of this fuel system is the unique design of the Holley 115-gph AFB carburetor. The A-3-6 model features a 650 CFM primary venturi and 750 CFM secondary venturi, providing an excellent air/fuel mixture for high-performance applications. The carburetor is topped with a polished aluminum air cleaner assembly, which not only looks great but also ensures optimal air filtration for your engine.

The fuel system includes a Holley 231-1102 electric fuel pump with a 6-inch mounting bracket. This high-performance pump is capable of delivering plenty of fuel for your thirsty engine, ensuring consistent power delivery. The pump is housed in a cast aluminum housing for added durability and cool running temperatures.

The fuel system also includes a Holley 231-1101 fuel filter assembly. This filter is designed to remove any debris or contaminants from the fuel before it reaches the carburetor, ensuring a clean and efficient fuel supply. The filter assembly is easy to access and can be quickly changed when needed.

The fuel system also includes all necessary fuel lines, fittings, and hardware for a complete installation. The lines are made of high-quality, reinforced fuel hose that can withstand the demands of high-performance applications. The fittings are AN-style, ensuring a secure and leak-free connection.

The Holley GM 3866948 A-3-6 1966 396/360 427/390 Corvette Cast Aluminum Street Fuel System is a perfect upgrade for any 1966 Corvette looking for improved performance and reliability. This complete fuel system is easy to install and is backed by Holley's unparalleled customer service and technical support. Upgrade your classic Corvette today with this high-performance fuel system from Holley.

Buying a 1966 Chevrolet Corvette with the engine type GM 3866948 A-3-6 1966 396/360 427/390 and a Holley carburetor can be an exciting experience for any Corvette enthusiast. Here are some pros and cons to consider before making a purchase.

1. Power: The 427 cubic inch V8 engine is known for its raw power and torque. This engine upgrade can significantly enhance the driving experience.

2. Customization: The Holley carburetor is highly customizable, allowing for fine-tuning of the engine's performance.

3. Collectability: The 1966 Corvette with a 427 engine is a highly sought-after collectible. This investment could potentially appreciate in value over time.

4. Performance: The combination of the powerful engine and the customizable carburetor can lead to impressive performance upgrades.

1. Cost: The cost of purchasing a Corvette with a 427 engine and a Holley carburetor can be quite high. These upgrades can add significantly to the overall price.

2. Maintenance: The high-performance engine and the custom carburetor require more frequent and specialized maintenance. This can be costly and time-consuming.

3. Complexity: The combination of the high-performance engine and the custom carburetor can make the vehicle more complex to operate and maintain.

4. Fuel Efficiency: The powerful engine and the high-performance carburetor can lead to decreased fuel efficiency. This can result in higher operating costs.

The decision to buy a 1966 Chevrolet Corvette with the engine type GM 3866948 A-3-6 1966 396/360 427/390 and a Holley carburetor depends on individual preferences and priorities. If you are a Corvette enthusiast looking for raw power and customization, this upgrade could be worth the investment. However, if you are looking for a vehicle with good fuel efficiency and low maintenance costs, this may not be the best choice. Ultimately, it is important to carefully consider the pros and cons and weigh the potential benefits against the costs before making a purchase.

Before making a purchase, it is recommended to thoroughly research the market and compare prices and features of similar Corvettes with and without the upgraded engine and carburetor. Additionally, it is important to factor in the ongoing costs of maintenance and fuel efficiency when considering the total cost of ownership. Consulting with a knowledgeable Corvette expert or mechanic can also provide valuable insights and guidance.

Details:

1966 396/360,427/390 holley cast iron intake dated A-3-6 #3866948 has a piece cracked off ,but not used on the Corvette check last picture,sold as is very heavy, no shipping ,pickup only by appointment contact only in Danville VA 24541.

specifications engineblocksam:

• for models: 396, 360, 427, 390, Corvette
• brand: Gm Original
• mpn: 3866948
• items included: Cast Iron Holley Intake
• material: Cast Iron
• vintage part: Yes
• type: Engine Block
• ipn: A-3-6 3866948
• oe/oem part number: 1966 396/427 Vette
• manufacturer warranty: None Implyed Or Given
• finish: Dirty Original
• item weight: Heavy
• country of origin: United States

general engineblocksam:

• category: Auto Parts > Car Truck Accessories > Engines > Blocks

returns engineblocksam:

• policy: no returns

offer engineblocksam:

• in stock #: 4
• sold #: 18
• availability: in stock
• options: seller-arranged-local-pickup
• started: december 3, 2025
• prices: $62.38–$309.00
• item condition:
  • New
  • Remanufactured
  • Used

payments engineblocksam:

• credit card: visa
• wallet: paypal
• other

seller engineblocksam:

• city: danville, virginia
• # reviews: 4018
• rating: 100.0%

shipping engineblocksam: