GM 3919849 Intake Port Jet Carb 427/390HP

( Brand: Gm ), ( Mounting Style: Bolt-on ), ( Manufacturer Part Number: 3919849 ), ( Material: Aluminum ), ( Vintage Part: Yes ), ( Placement On Vehicle: Front ), ( Fuel Type: Gasoline ), ( Type: Intake Manifold ), ( Country/region Of Manufacture: United States ), ( Universal Fitment: No )

Review GM 427/390hp Aluminum Intake Oem Oval Port Jet Carb Rare fits CORVETTE 427 1968

1968 Corvette 427/390hp Intake Port Jet Carburetor (GM Part Number: 3919849)

The GM 3919849 intake port jet carburetor is a high-performance component designed specifically for the 1968 Corvette 427/390hp engine. This carburetor is an essential upgrade for enthusiasts looking to maximize the power and performance of their classic Corvette.

The intake port jet carburetor is a four-barrel design that features four separate intake ports, each with its individual jet. These jets are designed to provide an optimal air-fuel mixture for the large 427 cubic inch engine, ensuring efficient combustion and increased horsepower.

The carburetor is meticulously crafted with precision-machined components, ensuring a perfect fit and seamless integration with the engine. The intake ports are engineered to provide optimal flow rates, enhancing the engine's breathing capabilities and improving overall performance.

This intake port jet carburetor is also equipped with a secondary metering system, which allows for fine-tuning of the air-fuel mixture during various engine operating conditions. This feature is crucial for maintaining optimal engine performance and ensuring reliable starting and idling.

Additionally, the carburetor comes with a high-performance air cleaner assembly, which includes a large, filter element designed to capture even the smallest particles of dirt and debris. This feature not only improves the air quality entering the engine but also adds a distinct visual appeal to the engine bay.

The GM 3919849 intake port jet carburetor is also designed for easy installation, with clear instructions and mounting hardware included in the package. The carburetor is backed by GM's reputation for quality and reliability, ensuring peace of mind for Corvette enthusiasts looking to enhance their engine's performance.

In summary, the GM 3919849 intake port jet carburetor is an essential upgrade for any 1968 Corvette 427/390hp engine. With its high-performance design, precise engineering, and easy installation, this carburetor delivers increased horsepower, improved engine breathing, and enhanced reliability. Whether you're a seasoned Corvette enthusiast or just starting your journey into classic car performance, this intake port jet carburetor is an excellent investment for your beloved 1968 Corvette.

Buying a 1968 Corvette with a 427/390hp intake port jet carburetor from GM (part number 3919849) comes with several pros and cons that potential buyers should consider before making a decision.

1. Power Enhancement: Installing a 427/390hp intake port jet carburetor on a Corvette engine will significantly increase the vehicle's horsepower and torque, leading to better acceleration and overall performance.

2. Authenticity: This carburetor is an original GM part, ensuring that it is of high quality and fits perfectly with the engine.

3. Fuel Efficiency: Although the primary goal of installing a high-performance carburetor is to enhance power, some users report improved fuel efficiency due to better air-fuel mixture.

1. Complexity: Installing and tuning a high-performance carburetor like the 427/390hp intake port jet carburetor can be a complex process that requires expertise and time.

2. Cost: The cost of purchasing and installing the carburetor can be substantial, especially when considering the additional expenses for tools, labor, and possible engine modifications.

3. Maintenance: High-performance carburetors require more frequent and detailed maintenance compared to stock carburetors, which can be time-consuming and costly.

The decision to buy a 1968 Corvette with a 427/390hp intake port jet carburetor from GM (part number 3919849) depends on your personal goals, budget, and expertise. If you are an enthusiast seeking maximum performance and are willing to invest time and money into the installation and maintenance process, this upgrade could be an excellent choice. However, if you prioritize ease of use, reliability, and lower costs, it may be best to stick with the stock carburetor or consider other options.

For those considering this upgrade, it is highly recommended to consult with a professional mechanic or performance specialist to assess the feasibility, costs, and potential benefits for your specific vehicle. Additionally, be prepared for a significant investment of time, expertise, and resources to ensure proper installation and tuning of the carburetor.

Details:

There is no porting or corrosion on this intake. These is also one outer intake mounting boss that chipped and still could be used as. This intake could be used as is or restored for your show stopper. Don't miss this awesome factory aluminum intake for your Big Block Chevy engine.

The casting date is 11.6.67. Don't miss this awesome factory GM Big Block Chevy aluminum intake. This intake is in good un restored overall as shown. The heat riser ports under the carb mounting area have been plugged off to reduce which can cause poor performance and base warping.

This intake was only cast in aluminum for Corvette 427/390HP applications the 1968-1969 model's years. The casting number is 3919849. The intake is in bare aluminum finish and does not appear to have ever been sand or glass bead blasted. The true originals rarely come up for sale and get snapped quickly when they do.

This is a real deal OEM GM aluminum intake manifold for Big Block Chevy engines with oval port heads. These were very rare when new and are even harder to find today. The part number, firing order, and all important Winters Foundry snowflake casting mark are intact undisturbed. The thermostatic choke mounting point had a larger screw installed which buggered up the boss bit as shown.

part #: 3919849 prices

• $475.00-$995.00

specifications inputmanifolds:

• for models: 427, Corvette
• for years: 1968
• brand: Gm
• mounting style: Bolt-on
• manufacturer part number: 3919849
• material: Aluminum
• vintage part: Yes
• placement on vehicle: Front
• fuel type: Gasoline
• type: Intake Manifold
• country/region of manufacture: United States
• universal fitment: No

shipping inputmanifolds:

• service: Standard
• cost: $36.85
• type: Fixed
• class: Standard
• transit: 3-7 Days

offer inputmanifolds:

• options: Ship-to-home
• quantity: 1
• started: August 5, 2025
• best offers: True
• sold: 0
• availability: In Stock

seller inputmanifolds:

• city: Santa Cruz, California
• # reviews: 16901
• rating: 99.9%

general inputmanifolds:

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

payments inputmanifolds:

• credit card: Discover
• other
• wallet: Apple-pay
• cash
• money order

returns inputmanifolds:

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

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