EDELBROCK 1805S Cfm Avs Carburetor

( Brand: Edelbrock ), ( Manufacturer Part Number: 1805S ), ( Choke Type: Mechanical ), ( Type: Carburetor ), ( Mounting Flange Type: Square Bore ), ( Items Included: Gasket ), ( Material: Aluminum ), ( Vintage Part: Yes ), ( Country Of Origin: United States )

Review EDELBROCK Rebuilt Cfm Series Avs Carburetor fits THUNDER 650

The Edelbrock 1805s Thunder AVS 650 CFM Carburetor is a high-performance intake manifold and carburetor combination designed for muscle cars and hot rods seeking improved power and torque. This carburetor is part of Edelbrock's Thunder Series, which is renowned for its powerful and efficient fuel delivery.

The 1805s Thunder AVS Carburetor boasts a 650 CFM (cubic feet per minute) airflow capacity, making it suitable for larger engines with increased power demands. Its advanced design includes an automatic vacuum secondaries (AVS) system, which utilizes a unique vacuum-operated secondary metering system. This system ensures optimal fuel delivery under all driving conditions, providing a smooth and responsive powerband.

The carburetor's high-performance intake manifold is designed to provide excellent airflow and fuel distribution. It features a rectangular cross-section, which reduces turbulence and improves airflow velocity, leading to more efficient combustion and increased power output. The manifold also includes a built-in fuel pressure regulator, which simplifies the fuel system and eliminates the need for external regulators.

The 1805s Thunder AVS Carburetor is designed with a four-barrel configuration and includes four 1.5-inch throttle bodies. Each throttle body is equipped with a 350-degree phased port design, which optimizes fuel delivery and enhances engine performance. The carburetor's primary and secondary metering rods are adjustable, allowing fine-tuning of the fuel mixture for optimal engine performance under various driving conditions.

Additionally, the 1805s Thunder AVS Carburetor includes a number of features to make installation and tuning easier. These include a conveniently located float bowl drain plug, an adjustable power valve, and a built-in fuel pressure regulator. The carburetor also features a durable, polished aluminum finish and is backed by Edelbrock's limited lifetime warranty.

In summary, the Edelbrock 1805s Thunder AVS 650 CFM Carburetor is a high-performance intake manifold and carburetor combination designed for muscle cars and hot rods seeking improved power and torque. Its advanced design includes an automatic vacuum secondaries system, a high-performance intake manifold, and adjustable primary and secondary metering rods, making it a versatile and powerful option for those looking to enhance their engine's performance.

The Edelbrock 1805s Thunder AVS 650 CFM carburetor is a popular choice among automotive enthusiasts for improving the performance of their engines. Below are some pros and cons that may help you make an informed decision about purchasing this carburetor.

1. High Air Flow: The 650 CFM airflow rate makes this carburetor suitable for high-performance applications, providing excellent throttle response and fuel efficiency.

2. Easy Installation: The Thunder AVS carburetor comes with a built-in electric choke and vacuum secondary, making it easier to install compared to some other high-performance carburetors.

3. Fuel Economy: The AVS system utilizes a vacuum secondary that helps to maintain optimal fuel-air mixture under varying engine loads, resulting in improved fuel economy.

4. Customizable: Edelbrock offers various kits and accessories that allow users to fine-tune the carburetor to their specific engine and driving conditions.

5. Durable: The Thunder AVS carburetor is constructed of high-quality materials and has a robust design, ensuring long-lasting performance.

1. Complexity: Compared to stock carburetors, the Thunder AVS carburetor is more complex, requiring a higher level of tuning and maintenance.

2. Cost: This carburetor is more expensive than stock or aftermarket carburetors, which may be a deterrent for some buyers.

3. Fuel Mileage: While the AVS system can improve fuel economy under certain conditions, some users have reported decreased fuel mileage when using this carburetor, especially during city driving.

4. Cold Starts: The electric choke system may not provide the same smooth cold start experience as a traditional mechanical choke.

5. Tuning: The Thunder AVS carburetor requires careful tuning to achieve optimal performance, which can be a challenge for some users.

The Edelbrock 1805s Thunder AVS 650 CFM carburetor offers numerous advantages for high-performance applications, including excellent throttle response, improved fuel efficiency, and durability. However, its complexity, cost, and potential impact on fuel mileage are important considerations for potential buyers. Ultimately, the decision to purchase this carburetor depends on your specific engine setup, driving habits, and tuning abilities. If you are comfortable with the added complexity and cost, and you are looking for significant performance gains, the Thunder AVS carburetor may be an excellent investment. On the other hand, if you are seeking a more straightforward and cost-effective solution, other carburetor options may be more suitable for your needs.

Details:

Unsure of overall history; sold as is 650 cfm Edelbrock Thunder Series AVS Carburetor with casting numbers 1805S 1115. Set to factory specs on idle, choke, and float adjustments. Gone through with fresh gaskets, genuine Edelbrock needle and seat assemblies, accelerator pump cup.

part #: 1805s prices

• $215.49-$469.95

specifications carbcoon:

• for models: 650, Thunder
• brand: Edelbrock
• mpn: 1805s
• choke type: Mechanical
• type: Carburetor
• mounting flange type: Square Bore
• items included: Gasket
• material: Aluminum
• vintage part: Yes
• country of origin: United States

shipping carbcoon:

• transit: 7-11 Days
• type: Fixed
• class: Standard
• cost: $19.99
• carrier: USPS
• service: USPS Ground Advantage

seller carbcoon:

• rating: 100.0%
• # reviews: 231
• city: Los Angeles, California

general carbcoon:

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

returns carbcoon:

• policy: No Returns

offer carbcoon:

• sold: 0
• availability: In Stock
• quantity: 1
• started: April 10, 2026
• options: Ship-to-home

payments carbcoon:

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

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