ROCHESTER 7005140 Carburetor 1-BARREL 235 261 6-CYLINDER

( Brand: Rochester ), ( Manufacturer Part Number: 7005140 ), ( Type: Chevrolet Gmc Carb ), ( Oe/oem Part Number: 1951 1952 1953 1954 1955 1956 1957 1958 )

Review ROCHESTER Model 1-barrel Carburetor Chevy 235 261 6-cylinder fits 1950–1959

The Rochester 7005140 1-barrel carburetor is a classic automotive component designed specifically for 1950-1959 Chevy vehicles equipped with 235, 261, and 6-cylinder engines. This carburetor is a testament to the rich history of automotive engineering and its ability to provide reliable and efficient fuel delivery for over six decades.

The Rochester 7005140 features a single-barrel design, which means it has a single intake manifold port and a single throttle valve. This design is well-suited for smaller engines, offering excellent fuel economy and smooth power delivery. The barrel itself is constructed of high-quality materials, ensuring durability and resistance to corrosion.

The carburetor is equipped with an accurate and responsive mechanical fuel pump, which draws fuel from the fuel tank and delivers it to the carburetor for atomization and combustion. The fuel bowl is vented to prevent fuel from entering the engine during deceleration or when the engine is idling, ensuring proper engine performance and longevity.

The Rochester 7005140 also includes an adjustable idle mixture screw and an adjustable main jet, allowing for fine-tuning of the engine's idle quality and overall performance. The carburetor is also equipped with a vacuum secondary system, which allows for improved engine performance at higher RPMs by providing additional fuel to the engine when needed.

The Rochester 7005140 1-barrel carburetor is a high-quality replacement component for classic Chevy vehicles. Its proven design and reliable fuel delivery make it an excellent choice for those looking to restore their vintage automobiles or maintain the performance of their daily driver. Whether you're cruising down the highway or idling in traffic, this carburetor is sure to provide the smooth and efficient power delivery that your Chevy deserves.

Pros and Cons of Buying a Rochester 7005140 1-Barrel Carburetor for 1950-1959 Chevy 235, 261, 6-Cylinder Engines

a. Authenticity: This carburetor is an original Rochester 1-Barrel unit, which enhances the authenticity of your classic vehicle.

b. Performance: These carburetors were known for their smooth and reliable performance during the 1950s. They offer a vintage driving experience.

c. Availability: Replacement parts for these carburetors are widely available, making repairs and maintenance relatively easy.

d. Adjustability: The Rochester 7005140 1-Barrel Carburetor is fully adjustable, allowing you to fine-tune the engine for optimal performance and fuel efficiency.

e. Cost-effective: Compared to modern carburetors or fuel injection systems, this vintage unit is typically more affordable.

a. Complexity: These carburetors have more moving parts than modern fuel injection systems, which can make them more difficult to maintain and repair.

b. Fuel Efficiency: The Rochester 7005140 1-Barrel Carburetor may not offer the same level of fuel efficiency as modern systems, which can lead to increased fuel consumption.

c. Environmental Impact: Older carburetors, like the Rochester 7005140, can emit more pollutants than modern fuel injection systems, which may not meet current emission standards.

d. Vibration: Due to their design, these carburetors can create more vibration and engine noise than modern systems, which might not be desirable for all classic car enthusiasts.

The Rochester 7005140 1-Barrel Carburetor offers several advantages, such as authenticity, performance, availability, adjustability, and cost-effectiveness. However, it also comes with some disadvantages, including complexity, lower fuel efficiency, increased environmental impact, and higher vibration levels. Ultimately, the decision to buy this carburetor depends on your personal priorities as a classic car enthusiast.

If you value the authenticity, performance, and cost-effectiveness of a vintage carburetor, then the Rochester 7005140 might be the right choice for you. However, if you prioritize ease of use, fuel efficiency, and minimal environmental impact, you might want to consider other options, such as modern fuel injection systems.

If you are determined to use a vintage carburetor on your 1950-1959 Chevy 235, 261, 6-Cylinder engine, then the Rochester 7005140 1-Barrel Carburetor is a suitable option. Make sure to invest in a high-quality rebuild kit and seek professional assistance during the installation process to ensure optimal performance and longevity. If you prioritize ease of use, fuel efficiency, and minimal environmental impact, consider exploring modern fuel injection systems or alternative engine modifications.

Details:

See pics for condition. Core for rebuilding or parts. Base is stamped 5140. Please verify part number and pics match your application.

Rochester model B 1-barrel carburetor, no ID tag. Throttle bore measures 1-11/16 and mounting bolt holes to measure Linkage moves free. Carb core appears to be mostly complete.

part #: 7005140 prices

• $51.00-$64.95

specifications carbcoon:

• for makes: Chevy, Rochester
• for years: 1950-1959
• brand: Rochester
• mpn: 7005140
• type: Chevrolet Gmc Carb
• oe/oem part number: 1951 1952 1953 1954 1955 1956 1957 1958

seller carbcoon:

• city: Sheboygan Falls, Wisconsin
• # reviews: 31008
• rating: 100.0%

general carbcoon:

• condition: For parts or not working
• Car Truck Parts Accessories > Air Fuel Delivery > Carburetors

shipping carbcoon:

• cost: $0.00
• class: Standard
• carrier: USPS
• type: Calculated
• service: USPS Ground Advantage
• transit: 3-7 Days

offer carbcoon:

• sold: 0
• availability: In Stock
• options: Ship-to-home
• quantity: 1
• best offers: True
• started: September 15, 2025

payments carbcoon:

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

returns carbcoon:

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

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