condgreemee Rochester Quadrajet 4-Barrel Carburetor for Chevy 305/350 (1980–1989) — Electric Choke, 600–750 CFM

condgreemee’s Rochester Quadrajet replacement is a brand-new 4-barrel carburetor with electric choke engineered to fit 1980–1989 Chevy 305/350 ci engines and deliver 600–750 CFM performance.

This replacement Quadrajet-style 4MV carburetor from condgreemee is built to substitute worn or damaged original units on classic Chevrolet V8s, including many 1980–1989 cars, trucks and GM platforms that used 1904R/1906R-style carburetors. It is designed for vehicles with Chevy bowl entrance and linkage style, equipped with an electric choke and vacuum secondary operation. The unit ships ready-to-install, pre-jetted from the factory, and constructed from durable materials to withstand road use and restore drivability.

Will this carburetor fit my Chevy 305 or 350 engine?

If your vehicle is a 1980–1989 Chevrolet or compatible GM model originally equipped with a 4MV Quadrajet-style carburetor (1904R/1906R), this condgreemee replacement is likely compatible. Fitment requires the same bowl entrance, throttle linkage style and an electric choke setup.

• Compatible model years: commonly 1980–1989 for many Chevy/GMC cars and trucks.
• Engine sizes: intended for 305 and 350 ci V8 engines.
• Replaces OEM numbers: 1904R and 1906R Quadrajet-style units.
• Designed for vacuum-secondary operation with electric choke.

What are the key specifications and pre-installed jetting?

This carburetor is calibrated from the factory to flow between 600 and 750 CFM, with a maximum flow around 750 CFM, and comes with common jet sizes suitable for many street-driven V8s. Jetting and venturi sizes allow a broad compatibility baseline, though final tuning may be required for optimal performance.

• Flow range: 600–750 CFM (max ~750 CFM).
• Main jet: 190; Idle jet: 120; Air correction jets: 190.
• Auxiliary venturi diameter: 7 mm; choke tube (venturi) ~31.7 mm.
• Needle valve size: 3.3; vacuum-secondary operation.

Does installation require modifications or extra parts?

The condgreemee quadrajet replacement is sold as a direct-fit-style unit but excludes certain electronic connectors and AC throttle assemblies; verify your vehicle’s fittings and accessories before installing. Some vehicles may need minor linkage swaps or vacuum hookups, and tuning instructions are not included, so expect to reference installation guides or videos.

• Excludes computer-specific electrical plugs and AC throttle assembly.
• Recommended for non-computerized vehicles (carburetor-equipped systems).
• Installation instructions not included — consult online setup videos.
• Compare dimensions and linkage style with your original carburetor before ordering.

How will this carburetor affect everyday drivability and maintenance?

Replacing a worn Quadrajet with this new condgreemee unit can restore smoother idle, improved throttle response and more consistent acceleration when properly tuned. Regular maintenance like checking float level, vacuum lines, and periodic adjustment will keep the carburetor performing well over time.

• Restores idle stability and throttle response when matched and tuned correctly.
• High-grade materials aim for long-term durability under normal road conditions.
• Expect to tune mixtures and idle speed for local fuel and engine condition.
• Not recommended for marine use or computerized engine management systems.

Who is this for: This condgreemee Rochester Quadrajet-style 4-barrel carburetor is intended for classic Chevy and GM owners, hot-rodders and mechanics restoring 305/350 V8 vehicles from the 1980s that require a vacuum-secondary, electric-choke replacement. It suits users who can verify mechanical compatibility with their original carburetor, are comfortable with basic carburetor installation and tuning, and want a factory-pre-jetted, ready-to-install replacement to revive drivability.