TECHME17 549090 Carburetor Quadrajet Vacuum Secondary 4BBL 1904R 4MV 750CFM

( Brand: Techme17 ), ( Manufacturer Part Number: 549090 ), ( Type: Carburetor ), ( Features: Constant-vacuum ), ( Cfm: 650/750 ), ( Choke Type: Electric ), ( Manufacturer Warranty: 1 Year )

Review TECHME17 Carburetor For Rochester Quadrajet 4mv Vacuum Secondary 750cfm fits 1980–1989

The Techme17 549090 4bbl carburetor is a high-performance replacement option for 1904r Rochester Quadrajet 4mv vacuum secondary engines, specifically those with a 750cfm air flow rate and manufactured between 1980 and 1989. This carburetor is designed to provide superior fuel delivery and efficiency for enhanced engine performance.

The quad-barrel design of this carburetor allows for more precise fuel mixture control compared to a single or dual-barrel carburetor, resulting in smoother engine operation and optimal power delivery across the entire RPM range. The vacuum secondary system ensures efficient fuel delivery under various engine loads and conditions, improving fuel economy and reducing emissions.

The 549090 model features a 4bbl (four-barrel) configuration, with four separate barrels each containing a float bowl and fuel jet to deliver fuel to the engine's intake manifold. The carburetor also includes a 750cfm (cubic feet per minute) air flow rate, which is suitable for larger engines that require more fuel for optimal performance.

The vacuum secondary system on this carburetor is designed to activate under light engine loads, providing an additional fuel mixture to the engine for smoother idle and improved fuel economy. The carburetor's vacuum secondary system is controlled by a vacuum diaphragm, which responds to engine vacuum levels to regulate fuel flow.

This Techme17 carburetor is also designed with a durable construction, featuring a cast aluminum body and high-quality components for superior resistance to corrosion, wear, and heat. The carburetor includes all necessary hardware for installation, including mounting brackets, gaskets, and bolts.

The 549090 model is suitable for a wide range of applications, including hot rods, muscle cars, and high-performance engines. Its high-performance design and precise fuel delivery make it an ideal choice for those looking to enhance the power and efficiency of their 1904r Rochester Quadrajet 4mv vacuum secondary engine.

In summary, the Techme17 549090 4bbl carburetor is a high-performance replacement option for 1904r Rochester Quadrajet 4mv vacuum secondary engines with a 750cfm air flow rate and manufactured between 1980 and 1989. Its quad-barrel design, vacuum secondary system, and durable construction make it an ideal choice for those looking to enhance the power and efficiency of their engine, while also providing smooth idle and improved fuel economy.

The TECHME17 549090 4bbl carburetor is a suitable replacement for the Rochester Quadrajet 4mv vacuum secondary 750cfm 80-89. Here are some pros and cons of using this carburetor for a 1904r engine:

1. High Air Flow: This carburetor has a high air flow rate of 750cfm, making it ideal for high-performance applications.

2. Vacuum Secondary: The vacuum secondary system ensures good fuel-air mixture under all engine loads, providing smooth and consistent engine performance.

3. Easy Installation: The carburetor comes with all necessary hardware for installation, making the process straightforward and hassle-free.

4. Affordable: The TECHME17 549090 carburetor is a cost-effective alternative to OEM carburetors, making it an attractive option for budget-conscious enthusiasts.

5. Wide Compatibility: This carburetor is compatible with various applications, not just the 1904r engine.

1. Requires Tuning: Since this is not an OEM part, it may require some tuning to achieve optimal engine performance.

2. Potential Leakage: There have been reports of minor fuel leakage around the floats, which may need to be addressed during installation.

3. Quality Concerns: Some users have reported issues with the quality of the components, such as rough edges or imperfect machining.

In conclusion, the TECHME17 549090 4bbl carburetor offers a good balance of performance and affordability for 1904r engines. However, it may require some tuning and attention to detail during installation. If you are looking for a cost-effective alternative to an OEM carburetor and are willing to put in some effort, this could be a suitable option for you.

Recommendation: If you decide to go with the TECHME17 549090 carburetor, make sure to follow the installation instructions carefully and take the time to tune the carburetor for optimal engine performance. Additionally, inspect all components closely during installation to ensure they are free of defects.

Details:

Air correction jets:190. Venture Choke tube: 31.7mm. As shown in the picture. New List Item.

Auxiliary Venture:7mm. Package Include. Main jet:190.

part #: 549090 prices

• $115.92-$139.53

specifications carbcoon:

• for makes: Rochester
• for years: 1980-1989
• brand: Techme17
• mpn: 549090
• type: Carburetor
• features: Constant-vacuum
• cfm: 650/750
• choke type: Electric
• manufacturer warranty: 1 Year

offer carbcoon:

• started: June 11, 2025
• availability: In Stock
• options: Ship-to-home
• sold: 0
• best offers: True

payments carbcoon:

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

general carbcoon:

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

shipping carbcoon:

• service: Standard
• transit: 3-9 Days
• class: Standard
• type: Fixed
• cost: $0.00

returns carbcoon:

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

seller carbcoon:

• rating: 99.7%
• # reviews: 5886
• city: Chino, California

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