FIRCHASSIS FIRC4270700SS Quadrajet Vacuum Secondary 1904R 4MV Carburetor 750CFM 4BBL

( Brand: Firchassis ), ( Manufacturer Part Number: FIRC4270700SS ), ( Type: Carburetor ), ( Specifications 1: Auxiliary Venturi ), ( Venturi Choke Tube : 31.7mm ), ( Features: Spread Bore Carburetor, Constant-vacuum, Quadrajet ), ( Choke Type: Electric ), ( Specifications 2: Main Jet ), ( Specifications 3: Idle Jet ), ( Needle Valve: 3.3 ), ( Oe/oem Part Number: 1981-1986 1906r ), ( Package Contents: Comes With Accessories, As Shown In The Picture ), ( Cfm: 650/750 ), ( Manufacturer Warranty: 3 Years ), ( Ipn: 1904r 17066422 17066425 17066432 )

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

Introducing the FIRCHASSIS FIRC4270700SS carburetor kit, specifically designed for the 1904R Rochester Quadrajet 4MV vacuum secondary 80-89 carburetor with a 750 CFM 4-barrel configuration. This kit is an excellent choice for classic car enthusiasts looking to restore or upgrade their vintage vehicle's fuel delivery system.

This FIRCHASSIS kit comes with a high-performance intake manifold and four throttle bodies, all meticulously crafted to provide optimal airflow and fuel mixture for your engine. The intake manifold is engineered with precision-machined ports and a flat, polished surface, ensuring a perfect seal between the manifold and the cylinder heads. The throttle bodies feature large, 4-inch bore openings, allowing for increased airflow and improved engine response.

The FIRC4270700SS kit also includes a set of high-performance 750 CFM 4-barrel Quadrajet carburetors. These carburetors are renowned for their ability to deliver a precise fuel-air mixture for optimal combustion efficiency. The vacuum secondary system ensures that the carburetors provide consistent performance under varying engine loads and RPMs, making this kit ideal for both street and racing applications.

Each carburetor in this kit is equipped with a fine-mesh air cleaner element, designed to trap contaminants and debris before they reach the engine. The air cleaners are easily accessible, allowing for simple and routine maintenance.

The FIRCHASSIS FIRC4270700SS carburetor kit is compatible with a wide range of applications and engine sizes. However, it is essential to ensure that your specific engine and vehicle requirements are met before installing this kit. We recommend consulting with a professional mechanic or engine builder to ensure a successful installation.

This FIRCHASSIS kit is not only a performance upgrade but also a stylish addition to your classic car. The polished aluminum intake manifold and throttle bodies not only provide excellent airflow and fuel mixture but also add a touch of elegance to your engine bay.

In summary, the FIRCHASSIS FIRC4270700SS carburetor kit is a high-performance, stylish, and reliable solution for enthusiasts looking to upgrade their 1904R Rochester Quadrajet 4MV vacuum secondary 80-89 carburetor system. With its precise fuel delivery, increased airflow, and durable construction, this kit is an excellent investment for any classic car owner.

The Rochester Quadrajet 4V vacuum secondary carburetor, model number 750CFM 4bbl, is a commonly used carburetor for Oldsmobile 1904R engines powered by the 4270700 FIRCHASSIS 427 V8 engine. Here are some pros and cons of buying this specific carburetor.

1. High Air Flow: With a 750 cubic feet per minute (CFM) air flow rating, this carburetor is capable of delivering more fuel and air to the engine, which can lead to improved engine performance.

2. Vacuum Secondary Design: This design allows the carburetor to adjust fuel flow according to the engine's vacuum, ensuring optimal fuel-air mixture and improved idle stability.

3. 4V Design: The four-venturi design allows for a more precise fuel mixture and can lead to better fuel economy and performance.

4. Wide Compatibility: This carburetor is designed to fit and work with the 1904R Oldsmobile engine, making it a popular choice for those looking to restore or modify their classic cars.

5. Availability: This carburetor is readily available from various automotive parts suppliers, making it easy to find and purchase.

1. Complexity: Compared to some other carburetor designs, the Quadrajet 4V can be more complex to install and tune, requiring more time and expertise.

2. Cost: The Quadrajet 4V is typically more expensive than other carburetor options, due to its advanced features and high performance capabilities.

3. Maintenance: Due to its complex design, the Quadrajet 4V may require more frequent maintenance to ensure optimal performance.

4. Fuel Economy: While this carburetor can lead to improved performance, it may also result in slightly reduced fuel economy due to its high air flow rating.

The Rochester Quadrajet 4V vacuum secondary carburetor, model number 750CFM 4bbl, is a high-performance option for those looking to restore or modify their Oldsmobile 1904R 427 V8 engine. With its advanced features and improved fuel-air mixture capabilities, it can lead to improved engine performance. However, it comes with a complex installation process, higher cost, and increased maintenance requirements. Ultimately, the decision to purchase this carburetor depends on your specific needs, budget, and expertise level.

If you are looking for a high-performance carburetor for your Oldsmobile 1904R 427 V8 engine and have the necessary expertise and budget, then the Rochester Quadrajet 4V vacuum secondary carburetor is a solid choice. However, if you are looking for a more affordable or less complex option, there may be other carburetor models that better suit your needs. It's always recommended to consult with a professional mechanic or carburetor expert to ensure you make the best decision for your specific situation.

Details:

Auxiliary Venturi:7mm. Main jet:190. All original hardware must be included in the package. New List Item.

Air correction jets:190. Venturi Choke tube: 31.7mm.

part #: firc4270700ss prices

• $117.39-$144.58

specifications carbcoon:

• for makes: Rochester
• for years: 1980-1989
• brand: Firchassis
• mpn: Firc4270700ss
• type: Carburetor
• specifications 1: Auxiliary Venturi
• venturi choke tube : 31.7mm
• features: Spread Bore Carburetor, Constant-vacuum, Quadrajet
• choke type: Electric
• specifications 2: Main Jet
• specifications 3: Idle Jet
• needle valve: 3.3
• oe/oem part number: 1981-1986 1906r
• package contents: Comes With Accessories, As Shown In The Picture
• cfm: 650/750
• manufacturer warranty: 3 Years
• ipn: 1904r 17066422 17066425 17066432

seller carbcoon:

• # reviews: 1042
• rating: 99.1%
• city: Chino, California

returns carbcoon:

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

payments carbcoon:

• credit card: Visa
• wallet: Paypal
• other

general carbcoon:

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

shipping carbcoon:

• type: Fixed
• transit: 5-11 Days
• service: Standard
• class: Standard
• cost: $0.00

offer carbcoon:

• availability: In Stock
• quantity: 2
• sold: 0
• started: January 16, 2026
• options: Ship-to-home
• best offers: True

Firchassis FIRC4270700SS Is Similar To:

• Firchassis 2107-1107010-20 For Lada 2101 2102 2103 2104 2105 2106 2107 Niva 1600 Carburetor (39% similar) For lads 2101-2107 Nivea 1600CCM. No drilling and cutting required. Condition: new, item type:carburetor, part number: 20 20, choke type:mechanical. Easy to install. It is a good choice to replace an old one. Stable characteristic, high reliability. 1 carburetor. Unique charm, wear...(December 12th, 2024)
• Firchassis Firc4780580ss For 1973 1974-1984 Nissan 610 620 710 20 L18 z20 16010-nk2445 Carb Carburetor (42.7% similar) For Nissan L18 Z20 engine. 100% new and high quality. Condition: brand new. Direct replacement. 2 year warranty. Easy installation. Item type: carburetor. Profession install is highly recommend. Part numbers: 16010-13W 1601013W 16010-NK2445, 16010NK2445, NK2445, NK244...(December 26th, 2024)
• Firchassis Firc4780440ss For Mitsubishi 4g32 Tredia Pick Up Delica Lancer Dodge Colt Carburetor Md-006219 (44% similar) Part numbers: MD-006219, MD006219. New list item. Item type: carburetor. For Mitsubishi 4G32 4G33 4G64. Easy installation. All original hardware must be included in the package. 2 year warranty. Condition: brand new. Profession install is highly recommend. Direct replacement...(December 26th, 2024)
• Firchassis Firc4781000ss For Mazda Capella Ford Courier Na B1600 1942-13-600 1969-1984 Carburetor (46.8% similar) Fit for: Mazda Na B1600. Choke type: automatic. All original hardware must be included in the package. Displacement: 1.1-3.6L. Floor size: 44X80MM. Of cylinders: material: aluminium/zinc. New list item...(December 26th, 2024)
• Firchassis Firc1312780ss Fit For Vw Beetle Bug Bus 1946-1966 30 Pict-1 Carburetor Kit Electric Choke (45.1% similar) This is sold as a replacement fit for the brand new 30 PICT-1 carbs. No air filter included. Direct mount .includes mounting gasket. Carburetor clears alternators used on late model type 1 engine applications. Perfect for your 1500CC engine. No instructions included. All original...(March 28th, 2025)
• Firchassis Firc75040ss Fit For Ford 64-79 F150 F250 F350 289 302 351 2-barrel Carburetor Carb 2100 A800 (44.4% similar) Material: metal. New list item. Plug-and-play installation no complex modifications; restore your engines peak performance in hours. Vintage-friendly design preserve your vehicles authenticity while upgrading its provability. Please compare your carburetor against pictures before you...(March 28th, 2025)
• Firchassis Firc3854340ss For Weber Vw Bug Fiat Ford E choke 2 Barrel 32 36 Dfev Progressive Carburetor (46.6% similar) New list item. W/o product instruction. All original hardware must be included in the package. For VW bug type 1, the progressive carburetor is jetted for 1/1 300CC-1600CC based engines, recommend the carburetors displacements up to 1700CC. Easy installation: factory-matching ports manual...(April 10th, 2025)
• Firchassis Firc1075620ss For Vw Beetle Transporter Fiat Weber 40 Idf Carb Carburetor Engine 2 Barrel (52% similar) Easy installation. Air corrector jet 200. All original hardware must be included in the package. Replaces part NUMBERS:40 ID carburetor. Auxiliary venturi 28. For bug Volkswagen beetle fiat. Main jet 115. New list item...(April 11th, 2025)
• Firchassis Firc74900ss Fit For Chevrolet Engines 5.7l 350 6.6l 400 2 Barrel Carb Type Rochester 2gc (37.4% similar) Say goodbye to generic carburetors that fail match your vintage beauty. New list item. All original hardware must be included in the package. For Chevrolet engine model's. 1x car carburetor for Chevrolet, mounting gasket seal included. 350/5.7L 1970 -1980, 400/6.6L 1970 -1975...(May 7th, 2025)
• Firchassis Firc2393860ss For Chevrolet Engines 327 350 427 454 Quadrajet 4mv 4 Barrel Carburetor Carb (56.6% similar) New list item. For Chevrolet 1966 - 1970 v8 Chevy big block mark iv 6.5L/396 street. All original hardware must be included in the package. Manufacturer part number: 1901R,1901-GOG ,305. Material type: metal. Placement on vehicle: front. For Chevrolet 1970 -1972 v8 Chevy big block mark iv...(August 11th, 2025)
• Firchassis Firc1930740ss Bge Spec K-p Bgd And Bgdl Begin F 146-0663 Carb For Onan 146-0577 146-0630 (39.2% similar) All original hardware must be included in the package. 1 x 146-0663 carb with gaskets. Gd badly begin spec f 146-0663 carb for Oman 146-0577 146-0630. New list item. Stable characteristic, high reliability. Easy to install. Fit for Oman 146-0577 146-0630 beg spec k-p. It is a good choice...(September 4th, 2025)