ROCHESTER 7042274 Quadrajet Engine 7040268

( Brand: Rochester ), ( Manufacturer Part Number: 7042274 ), ( Items Included: Gasket ), ( Material: Aluminum ), ( Vintage Part: Yes ), ( Placement On Vehicle: Front ), ( Choke Type: Mechanical ), ( Type: Quadrajet ), ( Mounting Flange Type: Spread Bore ), ( Manufacturer Warranty: No Warranty ), ( Country/region Of Manufacture: United States ), ( Universal Fitment: No )

Review ROCHESTER Quadrajet Pontiac Engine Modified Read fits 455 1970

The Rochester Quadrajet 7042274 carburetor is a classic piece of automotive engineering, designed specifically for use with the powerful 455 engine in 1970 Pontiac vehicles. This carburetor is a testament to the enduring popularity of the Quadrajet series, which has been a staple of the American automobile industry since its introduction in the 1960s.

The Rochester 7042274 Quadrajet carburetor is a four-barrel carburetor, featuring four separate intake systems that allow for a more efficient and powerful fuel-air mixture. This design allows for a larger fuel intake, which in turn provides more power to the engine, making it an ideal choice for the powerful 455 engine.

The Quadrajet 7042274 carburetor is equipped with a primary metering rod, which is responsible for controlling the fuel flow to the first two barrels. The secondary metering rod, on the other hand, controls the fuel flow to the third and fourth barrels. This dual-rod system ensures a precise fuel-air mixture, which is essential for optimal engine performance.

The carburetor also features a vacuum secondary system, which allows for a more efficient fuel delivery at lower engine speeds. This system is particularly beneficial for vehicles that are often driven in city conditions, where stop-and-go traffic is common. The vacuum secondary system ensures that the engine always has the fuel it needs to perform at its best, even in low-speed situations.

The Rochester 7042274 Quadrajet carburetor is also known for its durability and reliability. It is made of high-quality materials, including cast aluminum, which provides excellent heat dissipation and resistance to corrosion. The carburetor is also equipped with a heavy-duty accelerator pump, which ensures a smooth and consistent power delivery, even under heavy acceleration.

In conclusion, the Rochester 7042274 Quadrajet carburetor is a top-quality choice for anyone looking to upgrade their 1970 Pontiac 455 engine. Its dual-rod metering system, vacuum secondary system, and durable construction make it an ideal choice for both performance enthusiasts and everyday drivers. Whether you're looking to add some extra power to your Pontiac or simply want to ensure that your engine runs smoothly and efficiently, the Rochester 7042274 Quadrajet carburetor is an excellent investment.

1. Improved engine performance: The Quadrajet carburetor is known for providing smooth and consistent fuel delivery, which can help improve the engine's performance, power, and acceleration.

2. Easy installation: The Quadrajet carburetor is a direct replacement for the original carburetor, making it relatively easy to install, assuming the vehicle is in good condition.

3. Wide availability of parts and resources: The Quadrajet carburetor is a popular aftermarket upgrade, which means that replacement parts and information are widely available.

1. Higher cost: While the Quadrajet carburetor is not overly expensive, it is more expensive than some other aftermarket options.

2. Potential for complexity: While the installation is relatively straightforward, some older vehicles can have complex engine systems that may require additional work to ensure proper operation with the Quadrajet carburetor.

3. Potential for increased fuel consumption: The Quadrajet carburetor may provide improved performance, but it may also result in increased fuel consumption, depending on driving habits and conditions.

In conclusion, the Rochester Quadrajet 4-barrel carburetor can be a great upgrade for a 1970 Pontiac with a 455 engine, providing improved performance, easy installation, and wide availability of parts and resources. However, it is important to consider the potential higher cost, complexity of installation, and increased fuel consumption before making a decision. In general, the Quadrajet carburetor is a good choice for enthusiasts looking to improve the performance of their classic Pontiac without breaking the bank or undertaking a major overhaul.

Details:

No base plate gasket included. Accelerator shooter holes slightly and verified to spray two fast solid streams. Base plate line-bored and primary throttle shaft bushings replaced with Elite bronze 5/8 oversized this eliminates any vacuum leaks/erratic idle due to wear. Painted with VHT hi-temp engine paint baked three hours for durability.455-4V Tramp Stamp tattoo.

Any questions please reach out. Primary and secondary fuel well plugs tested for leaks sealed with epoxy. Pull off set perfectly includes air cleaner gasket. Double wall cardboard.

Rebuilt with high quality kit including float.135 solid wall needle/seat, ethanol resistant blue seal/garter spring HI-PO accelerator pump and Pontiac exterior rubber boot thick gaskets, new fuel filter fitting tested/polished/painted secondary/choke dash pot. Very smooth throttle pivoting. Rochester Quadrajet 1970 7040268 Pontiac 455 engine. Condition is Remanufactured.

New stainless steel screws and Lactate on assembly. Plenty of room for one inch foam sponge full surround protection. cfm limiter tab carefully removed and replaced with a adjustable set screw it mild to wild just by turning. Factory divorced choke set-up.

Shipped by USPS PRIORITY MAIL in their large box. Accelerator pump duration shot linkage added to allow easy lean or rich setting.

part #: 7042274 prices

• $250.00-$899.00

specifications carbcoon:

• for models: 455
• for makes: Pontiac, Rochester
• for years: 1970
• brand: Rochester
• mpn: 7042274
• items included: Gasket
• material: Aluminum
• vintage part: Yes
• placement on vehicle: Front
• choke type: Mechanical
• type: Quadrajet
• mounting flange type: Spread Bore
• manufacturer warranty: No Warranty
• country/region of manufacture: United States
• universal fitment: No

payments carbcoon:

• wallet: Apple-pay
• credit card: American-express
• other

seller carbcoon:

• city: Rosedale, New York
• # reviews: 597
• rating: 100.0%

offer carbcoon:

• started: July 6, 2024
• sold: 0
• options: Ship-to-home
• availability: In Stock
• quantity: 1
• best offers: True

general carbcoon:

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

returns carbcoon:

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

shipping carbcoon:

• transit: 5-10 Days
• service: USPS Priority Mail Large Flat Rate Box
• class: Expedited
• carrier: USPS
• type: Fixed
• cost: $25.00

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