HOLLEY Cfm Carburetor 3490-S
fits model: 450.
( Brand: Holley ), ( Manufacturer Part Number: 3490S ), ( Type: Carburetor ), ( Universal Fitment: Yes )
Review HOLLEY Cfm Carburetor Rebuilt List fits 450
The Holley 3490S 450 CFM Carburetor, model number 3490-S, is a high-performance fuel delivery system designed for enthusiasts seeking optimal engine response and power. This double-pumper carburetor is a popular choice among hot rods, muscle cars, and high-performance applications.
The 3490S features a unique design with a large 450 CFM capacity, accommodating the increased power demands of today's high-performance engines. Its advanced vacuum secondary system optimizes mid-range and top-end power while maintaining excellent idling and vacuum characteristics.
The carburetor's design includes Holley's proven Accu-Jet secondary metering system, which ensures precise fuel delivery for optimal combustion. This system utilizes a fine-tunable secondary jet, allowing you to dial in the perfect mixture for your specific engine and driving conditions.
Additionally, the 3490S boasts a smooth-operating throttle valve, ensuring a responsive powerband and improved drivability. The carburetor's design also includes an adjustable idle mixture control, allowing you to set the perfect idle mixture for your engine.
The Holley 3490S 450 CFM Carburetor is constructed from high-quality materials, including billet aluminum and stainless steel components. Its durable design ensures long-lasting performance, even in the most demanding applications.
This double-pumper carburetor also includes a built-in air bleeder system, making it easy to remove all air pockets from the fuel system during installation. It also comes with a detailed installation manual, making the installation process as straightforward as possible.
In summary, the Holley 3490S 450 CFM Carburetor is a high-performance fuel delivery system designed for enthusiasts seeking optimal engine response and power. Its advanced design includes features such as a large 450 CFM capacity, Holley's proven Accu-Jet secondary metering system, and a smooth-operating throttle valve. Its durable construction and built-in air bleeder system make it a top choice for hot rods, muscle cars, and high-performance applications.
The Holley 3490S 450 CFM carburetor (model number 3490-S) is a popular choice among automotive enthusiasts for its high performance and versatility. Here are some pros and cons to help you make an informed decision about purchasing this carburetor:
Pros:1. High Air Flow: The 3490S offers a significant air flow rate of 450 CFM, making it suitable for high-performance applications.
2. Adjustability: This carburetor offers fine-tuning capabilities, allowing users to adjust the mixture for optimal engine performance.
3. Durability: Holley carburetors are known for their robust construction, and the 3490S is no exception. It is built to withstand the rigors of high-performance driving.
4. Fuel Efficiency: By providing a precise fuel-air mixture, the 3490S can help improve fuel efficiency, reducing overall operating costs.
5. Versatility: This carburetor can be used in a wide range of applications, including hot rods, muscle cars, and racing applications.
Cons:1. Complexity: Compared to some other carburetors, the 3490S can be more complex to install and tune, requiring a significant time investment.
2. Cost: The 3490S is a premium product, and its price tag reflects its high performance capabilities and features.
3. Maintenance: Like any mechanical component, the 3490S requires regular maintenance to ensure optimal performance. This can include cleaning or replacing various parts as needed.
In conclusion, the Holley 3490S 450 CFM carburetor is a high-performance option that offers a number of advantages, including adjustability, durability, and versatility. However, it also comes with some drawbacks, such as complexity, cost, and maintenance requirements.
If you are looking for a high-performance carburetor and are willing to invest the time and resources required for installation, tuning, and maintenance, then the Holley 3490S may be the right choice for you. On the other hand, if you are looking for a more affordable or simpler option, there may be other carburetors that better suit your needs. Ultimately, the decision comes down to your specific requirements, budget, and level of expertise.
Details:
No return on carburetors. Preliminary settings redone during rebuild process. Primary metering block 4474. Dip Tank cleaned and assembled with a Holley non stick rebuild kit.
Manual choke. Nice 1960s 450 cfm carburetor with Ford down shift linkage3490-S List date 655 1966 May -week 5 Really nice High Performance carburetor. Before Buying Check the pictures carefully for full compatibility your situation. These early carbs require the use of auxiliary throttle return spring at installation.
Secondary Metering Plate#19 67 jet. Black spring in vacuum secondary actuator. Primary jets #57.
part #: 3490s prices
- $599.95-$725.00
specifications carbcoon:
- for models: 450
- brand: Holley
- mpn: 3490s
- type: Carburetor
- universal fitment: Yes
payments carbcoon:
- credit card: Diners-club
- wallet: Paypal
- other
returns carbcoon:
- policy: No Returns
general carbcoon:
- condition: Used
- Car Truck Parts Accessories > Air Fuel Delivery > Carburetors
shipping carbcoon:
- type: Calculated
- transit: 4-9 Days
- service: UPS Ground Saver
- cost: $18.60
- carrier: UPS
- class: Economy
offer carbcoon:
- options: Ship-to-home
- sold: 0
- availability: In Stock
- started: December 22, 2025
- quantity: 1
seller carbcoon:
- # reviews: 860
- rating: 100.0%
- city: Livonia, Michigan
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