HOLLEY Vacuum Secondary Diaphragm Power Pack Carburetor R4671 R4672 R4789 R4790 135-6 3X2

( Brand: Holley ), ( Type: Diaphram ), ( Ipn: R4671 R4672 R4789 R4790 ), ( Manufacturer Part Number: 35-6 ), ( Country/region Of Manufacture: United States )

Review HOLLEY Vacuum Secondary Diaphragm 3x2 Tri Power Six Pack Carburetor

Introducing the Holley R4671, R4672, R4789, and R4790 135-6 Vacuum Secondary Diaphragm 3x2 Power Pack Carburetors, a high-performance addition to any racing or high-performance engine application. These carburetors, designed by Holley, a leading name in automotive fuel systems, are built to deliver precise fuel metering and consistent power delivery.

The 135-6 series carburetors feature a vacuum secondary system, which utilizes a diaphragm design for improved vacuum response and fuel delivery. The R4671, R4672, R4789, and R4790 models are all part of the 3x2 power pack series, meaning they come with three 2-barrel carburetor bodies. Each carburetor body includes a 580 cfm primary venturi and a 750 cfm secondary venturi, providing ample fuel flow for high-performance applications.

The diaphragms used in these carburetors are constructed from a durable, high-quality material that offers excellent vacuum response and consistency. This results in smooth fuel delivery and improved engine performance, especially during high RPM operation. The power pack design of these carburetors also offers the added benefit of easier installation and synchronization between the individual carburetor bodies.

Additionally, these carburetors come with a number of advanced features to make setup and tuning easier. They include adjustable secondary emulsion tubes, which help fine-tune the fuel mixture for optimal engine performance. The carburetors also feature adjustable power valves, which can be used to control fuel flow during acceleration and deceleration. Each carburetor body includes a fuel bowl gasket, float bowl gasket, float bowl mounting hardware, and float bowl vent tube.

In conclusion, the Holley R4671, R4672, R4789, and R4790 135-6 Vacuum Secondary Diaphragm 3x2 Power Pack Carburetors are a high-performance solution for any racing or high-performance engine application. With their vacuum secondary system, durable diaphragms, and advanced tuning features, these carburetors deliver precise fuel metering and consistent power delivery, making them an essential component for any serious automotive enthusiast.

The Holley R4671, R4672, R4789, and R4790 vacuum secondary diaphragm 3x2 power pack carburetors are popular choices in the automotive community due to their high performance and versatility. However, like any other automotive component, they have their pros and cons.

1. High Performance: Holley carburetors are known for their high performance capabilities. The vacuum secondary diaphragm design allows for better fuel atomization, which results in more complete combustion and improved engine performance.

2. Flexibility: These carburetors come in various sizes and configurations, making them suitable for a wide range of applications. From small-block Chevrolets to big-block Ford engines, there's a Holley carburetor to fit most needs.

3. Easy to Tune: Holley carburetors are known for their ease of tuning. The adjustable main jets, power valves, and idle mixtures make it simple to achieve optimal engine performance.

4. Durable: Holley carburetors are built to last. They feature heavy-duty materials, such as billet aluminum and brass, and are designed to withstand the rigors of high-performance applications.

1. Complexity: Holley carburetors can be more complex than some other types of carburetors. Their multi-port design and adjustable components require more time and effort to set up and tune properly.

2. Cost: Holley carburetors can be more expensive than some other types of carburetors. However, their high performance capabilities and durability justify the investment for many enthusiasts.

3. Maintenance: Holley carburetors require regular maintenance to ensure optimal performance. This includes regular cleaning, adjustment of the various components, and replacement of worn parts.

The Holley R4671, R4672, R4789, and R4790 vacuum secondary diaphragm 3x2 power pack carburetors offer high performance, flexibility, and durability. However, they can be more complex and expensive than some other types of carburetors, and they require regular maintenance. If you're looking for a high-performance carburetor that can be easily tuned and is built to last, then a Holley carburetor may be the right choice for you.

If you're interested in purchasing a Holley carburetor, we recommend doing your research and selecting the specific model that best fits your engine size and performance goals. Additionally, be prepared for the time and effort required to properly set up and tune the carburetor. With the right knowledge and resources, however, you'll be rewarded with improved engine performance and a more enjoyable driving experience.

part # 356 prices

• $39.99-$85.00

specifications carbcaddie:

• brand: Holley
• type: Diaphram
• interchange part number: R4671 R4672 R4789 R4790
• manufacturer part number: 35-6
• country/region of manufacture: United States

offer carbcaddie:

• quantity: 2
• sold: 0
• availability: In Stock
• options: Ship-to-home
• started: June 20, 2025

returns carbcaddie:

• policy: No Returns

payments carbcaddie:

• other
• credit card: Visa
• wallet: Paypal

shipping carbcaddie:

• cost: $0.00
• type: Fixed
• carrier: UPS
• transit: 4-7 Days
• class: Standard
• service: UPS Ground

general carbcaddie:

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

seller carbcaddie:

• rating: 100.0%
• # reviews: 1556

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