HOLLEY Carburetor Baseplate Vacuum Secondary 4-BARREL 12R-3876B 383

( Brand: Holley ), ( Type: Chrysler Dodge Plymouth ), ( Oe/oem Part Number: 1967 1968 1969 1970 1971 ), ( Manufacturer Part Number: 3C12R3876B ), ( Country Of Origin: United States )

Review HOLLEY 4-barrel Carburetor Baseplate Vacuum Secondary 3c Mopar 383 fits 440

Introducing the Holley 3C12R3876B 4-barrel carburetor baseplate, specifically designed for use with the Holley 383 and 440 Mopar engines and equipped with a vacuum secondary system. This baseplate is an essential component of your carburetor setup, providing a solid foundation for the installation of your Holley 4-barrel carburetor.

The Holley 3C12R3876B baseplate is meticulously crafted from high-quality materials, ensuring durability and longevity. Its sleek, black powder-coated finish not only adds an aesthetically pleasing touch to your engine bay but also offers protection against corrosion and wear.

This baseplate is engineered to accommodate the unique requirements of the 383 and 440 Mopar engines. It features precise hole placements and dimensions for a perfect fit, ensuring optimal engine performance and efficiency. The baseplate is also compatible with Holley's 383 and 440 vacuum secondary systems, allowing you to fine-tune your engine's fuel-air mixture for improved power and torque.

The Holley 3C12R3876B baseplate is designed to simplify the installation process. It comes pre-drilled for easy mounting, and its flat, level surface ensures proper carburetor orientation for optimal performance. The baseplate also includes provisions for mounting your vacuum secondary system, simplifying the plumbing process.

With its robust design, compatibility with Holley's vacuum secondary systems, and easy installation process, the Holley 3C12R3876B 4-barrel carburetor baseplate is an indispensable addition to any Mopar 383 or 440 engine setup. Upgrade your engine performance today with this high-quality baseplate from Holley.

The Holley 3C12R3876B 4-barrel carburetor baseplate is a vacuum secondary carburetor designed for applications using Mopar 383 and 440 engines. Here are some pros and cons to help you make an informed decision about purchasing this carburetor baseplate:

1. Holley is a well-known and reputable brand in the automotive performance industry. Their carburetors are known for their reliability, durability, and ease of tuning.

2. This baseplate is designed for vacuum secondary applications, which can provide better idle quality and smoother throttle response compared to traditional secondary systems.

3. The baseplate is compatible with Mopar 383 and 440 engines, making it a popular choice for restorations and performance upgrades.

4. The baseplate features a unique design that allows for easy adjustments, making it easier to tune the carburetor for optimal performance.

5. Holley offers a wide range of accessories and add-ons for their carburetors, which can help customize the setup to meet specific engine requirements.

1. Holley carburetors can be more expensive than some other brands, which may be a consideration for some buyers.

2. Installing and tuning a Holley carburetor can be more complex than some other systems, which may require additional time and expertise.

3. The vacuum secondary system may not provide as much power gain as other secondary systems, such as mechanical or electric secondaries.

4. Some users have reported issues with the baseplate gaskets, which may require replacement or modification for a proper seal.

The Holley 3C12R3876B 4-barrel carburetor baseplate is a high-quality product from a reputable brand that offers reliable performance and ease of tuning for Mopar 383 and 440 engines. However, it may be more expensive than some other options and may require additional time and expertise to install and tune. Ultimately, the decision to purchase this baseplate will depend on your specific engine application, budget, and performance goals.

If you are looking for a reliable and high-performing carburetor baseplate for your Mopar 383 or 440 engine, the Holley 3C12R3876B is a strong contender. However, be prepared for the additional cost and complexity of installation and tuning. If budget or ease of installation is a concern, you may want to explore other options from lesser-known brands or consider an EFI system instead.

part # 3c12r3876b prices

• $20.00-$22.00

specifications carbcaddie:

• for models: 440
• for makes: Mopar
• brand: Holley
• type: Chrysler Dodge Plymouth
• oe/oem part number: 1967 1968 1969 1970 1971
• manufacturer part number: 3C12R3876B
• country of origin: United States

returns carbcaddie:

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

shipping carbcaddie:

• transit: 3-7 Days
• carrier: USPS
• class: Standard
• cost: $0.00
• type: Calculated
• service: USPS Ground Advantage

seller carbcaddie:

• # reviews: 33717
• rating: 100.0%

offer carbcaddie:

• quantity: 1
• options: Ship-to-home
• best offers: True
• started: March 17, 2026
• sold: 0
• availability: In Stock

general carbcaddie:

• Car Truck Parts Accessories > Air Fuel Delivery > Carburetor Parts
• condition: Used

payments carbcaddie:

• credit card: Mastercard
• wallet: Apple-pay
• other

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