HOLLEY R-476-1 Nos Carburetor Bus Engine Maximum Power C-41 672

( Brand: Holley ), ( Manufacturer Part Number: R-476-1 ), ( Vintage Part: Yes ), ( Type: Carburetor ), ( Oe/oem Part Number: R-397a, 234-gb-480-ap2, R-476-1a, R-476-a, R-476a ), ( Manufacturer Warranty: 1 Year ), ( Universal Fitment: No ), ( Country/region Of Manufacture: United States )

Review HOLLEY New Nos Carburetor Mack C-41 Bus 672 Engine For Maximum Power

The Holley R-476-1 NOS carburetor is a high-performance carburetor specifically designed for the Mack C-41 engine found in the 672 series trucks, aiming to deliver maximum power output. This carburetor is a part of Holley's groundbreaking line of NOS (Nitrous Oxide Systems) carburetors, making it an ideal choice for those looking to boost the performance of their Mack C-41 engines to new heights.

This Holley carburetor stands out due to its unique features and robust design optimized for heavy-duty applications. With a four-barrel configuration, this carburetor offers excellent air/fuel mixture control, ensuring stable idle and smooth power delivery even under high load conditions. With a CFM (cubic feet per minute) rating of 750, it provides the necessary fuel flow to meet the demands of the powerful Mack C-476 engine.

One of the most noteworthy aspects of the Holley R-476-1 NOS carburetor is its compatibility with nitrous oxide systems. The use of a NOS system can significantly increase engine power output, making this carburetor an excellent choice for truck enthusiasts and racers seeking maximum power gains. Holley's NOS carburetors come with several features tailored to the unique challenges of using nitrous oxide, including specialized nozzle designs to ensure efficient fuel delivery during injection events.

Additionally, the Holley R-476-1 NOS carburetor comes with a detailed installation kit, which makes the integration process easier. This kit includes various hardware pieces, gaskets, and other essential components needed for proper installation. Furthermore, the carburetor's adjustability allows fine-tuning to optimize the engine's performance according to specific application requirements, such as boost pressure, engine size, and fuel quality.

The R-476-1 NOS carburetor utilizes a vacuum secondary system, which provides an idle circuit and improves drivability. This feature ensures that the engine idles smoothly when not under boost, making it well-suited for daily driving applications. Its heavy-duty base and float bowls, along with adjustable idle mixture screws, contribute to the carburetor's durability and ease of adjustment, ensuring it can handle the demanding conditions of Mack C-41 engines.

In conclusion, the Holley R-476-1 NOS carburetor is an essential performance upgrade for Mack C-41 engines, specifically the 672 series. With its ability to deliver maximum power through compatibility with nitrous oxide systems, excellent adjustability, and a robust, heavy-duty design, this carburetor proves to be a reliable and efficient solution for those seeking the ultimate Mack C-41 engine performance experience.

1. Holley carbs are known for their high-performance capabilities and durability. The R-476-1 is no exception, delivering excellent air/fuel mixture and power influx for an industrial engine like the Mack C-41.

2. This carburetor is specifically designed for the Mack C-41 engine, ensuring a perfect fit for your vehicle. This precise fit minimizes the chances of leaks and other potential issues.

3. Large 870 CFM air flow capability delivers top-notch combustion efficiency and power output. This can result in improved performance and increased towing or carrying capacity for your bus.

1. The R-476-1 is a more complex and expensive carburetor compared to stock options. This investment may be a significant upfront cost for some.

2. Installation and tuning can be more challenging than a standard carburetor due to its high-performance design. Professional assistance from a mechanic or Holley technical support might be necessary for optimal operation.

3. Adjustment knobs on the carburetor may require more frequent fine-tuning compared to stock or less advanced performance carburetors.

The Holley R-476-1 carburetor offers high-performance benefits like increased power and improved combustion efficiency for the Mack C-41 engine. However, it comes with a higher cost, installation and tuning complexity, and increased need for maintenance compared to stock or standard performance carburetors.

If you're aiming for maximum power output and performance from your Mack C-41 engine and are willing to invest time and resources into its installation, tuning, and maintenance, the Holley R-476-1 carburetor should be a strong consideration. It is highly recommended for those seeking significant power boosts and excellent air/fuel mixture control for heavy-duty applications like buses. However, for those with a smaller budget or lower power/performance goals, a less complex and cheaper option might be a more viable choice.

Details:

We combine shipping. Please look closely at the pictures for condition before buying. Buyer pays return shipping. It does not come with the original packaging.

This is a NOS Holley Carburetor R476-1. It fits Mack C41 Buses with 672 engines and is for Maximum Power according to the catalog. It is brand new original Holley and in great condition. This means there could be some discoloration, markings, scratches, or other defects.

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part #: r4761 prices

• $234.99-$244.99

specifications carbcoon:

• for makes: Mack
• brand: Holley
• mpn: R-476-1
• vintage part: Yes
• type: Carburetor
• oe/oem part number: R-397a, 234-gb-480-ap2, R-476-1a, R-476-a, R-476a
• manufacturer warranty: 1 Year
• universal fitment: No
• country/region of manufacture: United States

shipping carbcoon:

• carrier: USPS
• transit: 3-9 Days
• type: Fixed
• cost: $18.76
• class: Standard
• service: USPS Ground Advantage

general carbcoon:

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

returns carbcoon:

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

seller carbcoon:

• # reviews: 4034
• city: Andover, Minnesota
• rating: 98.9%

payments carbcoon:

• credit card: Diners-club
• wallet: Paypal
• other

offer carbcoon:

• best offers: True
• quantity: 1
• availability: In Stock
• sold: 0
• options: Ship-to-home
• started: January 29, 2025

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