HOLLEY 20-242BK Big Block Mount 090127072813

( Brand: Holley ), ( Manufacturer Part Number: 20-242BK ), ( Part Type: Block Mount ), ( UPC: 090127072813 )

Review HOLLEY Big Block Chevy Mid mount Complete Accessory System

The Holley 20-242BK Mid-Mount Throttle Body is a high-performance component designed specifically for big block Chevy applications. This throttle body is part of Holley's Split Port Series, which offers improved idle stability and drivability, making it an excellent choice for both street and racing applications.

The 20-242BK Throttle Body is constructed from high-quality aluminum and features a durable, polished finish. Its mid-mount design places the throttle body in the center of the intake manifold, allowing for better distribution of airflow and improved engine performance. The throttle body also includes a built-in idling circuit, which helps maintain stable idle speeds under various engine loads.

One of the standout features of the Holley 20-242BK Throttle Body is its unique split-port design. This design allows the throttle plates to open in two stages, providing optimal airflow under various engine conditions. During cruising or light load situations, the smaller inner plates open, allowing for efficient airflow and improved idle stability. When more power is needed, the larger outer plates open, increasing airflow and delivering more horsepower.

The throttle body also includes a vacuum secondary idle circuit, which can be used to fine-tune idle speeds and improve idle stability. This circuit is adjustable via a screw on the top of the throttle body, allowing for quick and easy adjustments. Additionally, the throttle body includes a built-in 75mm mass airflow sensor housing, making it compatible with electronic fuel injection systems.

The Holley 20-242BK Mid-Mount Throttle Body is designed to fit most big block Chevy applications, including those using Edelbrock, Holley, or other aftermarket intake manifolds. It is important to note that some modifications may be required for specific intake manifold configurations. The throttle body is also compatible with both mechanical and electronic fuel injection systems, making it a versatile choice for a wide range of applications.

In summary, the Holley 20-242BK Mid-Mount Throttle Body is a high-performance component that offers improved idle stability, increased airflow, and versatility for big block Chevy applications. Its unique split-port design, adjustable idle circuit, and compatibility with various fuel injection systems make it an excellent choice for both street and racing applications.

The Holley 20-242BK Mid-Mount Big Block Chevy carburetor is a popular choice among performance enthusiasts for their Chevy engines. Here are some pros and cons that may help you make an informed decision about purchasing this carburetor:

1. High Flow Design: The Holley 20-242BK is designed to deliver large amounts of fuel to high-performance engines. Its unique design allows for excellent idle quality and quick throttle response.

2. Customizable: This carburetor offers a wide range of customization options, including various emissions control systems, power valves, and air gap adjustments.

3. Durable Construction: The Holley 242BK is made of high-quality materials and is built to withstand the rigors of high-performance driving.

4. Easy Installation: The carburetor comes with detailed instructions, and the mid-mount design makes it easier to install than a traditional front-mount carburetor.

5. Versatile: The Holley 242BK can be used with a variety of fuel systems, including EFI and mechanical fuel injection.

1. Complexity: The Holley 20-242BK is a complex carburetor, which can make it more difficult to tune and set up compared to a simpler design.

2. Cost: This carburetor is more expensive than some other options on the market, which may be a consideration for some buyers.

3. Maintenance: Due to its complex design and high-performance capabilities, the Holley 242BK may require more frequent maintenance than some other carburetors.

4. Size: The mid-mount design may not be suitable for all applications, and the carburetor requires a significant amount of space to install.

The Holley 20-242BK Mid-Mount Big Block Chevy carburetor is a high-performance option that offers excellent flow rates, customization options, and durability. However, its complexity, cost, maintenance requirements, and size may be drawbacks for some buyers. Ultimately, the decision to purchase this carburetor depends on your specific needs, budget, and expertise.

If you are looking for a high-performance carburetor for your Big Block Chevy engine and are willing to invest in a complex, customizable, and high-quality option, then the Holley 20-242BK Mid-Mount Big Block Chevy carburetor may be an excellent choice for you. However, if you are on a tight budget, prefer a simpler design, or have limited space, you may want to consider other options.

Details:

Bracket less accessory mounting with ultra-easy assembly. The top thermostat bypass and heater ports are recessed into the manifold. OE pulley ratios for optimal accessory performance. Available in natural and black finishes.

The compact and reliable SD7 A/C compressor Type II P/S pump with baffled reservoir are also integrated.The water design incorporates optional side or top heater ports. The Holley designed alternator is just as innovative. So if you don't need them, see them!When we say complete, mean complete. At the heart of system is a bracket less design, where accessories bolt directly to water pump for clean, integrated form.

Type II power steering pump with baffled reservoir. All pulleys and the belt are supplied. Easy assembly was a priority during the entire development of this accessory solution. O-ring seal to engine.

The design offers superb engine visibility to show off your horsepower, not accessories. All accessories are included; the water pump, A/C compressor, Alternator, and P/S pump with reservoir. Buyer pays return shipping. The power steering pump included can be used Hydro boost systems.

20-242BK Holley Big Block Chevy Mid-Mount Complete Accessory System: System Black Finish. Billet alternator, pensioner, and compressor pulley covers. This premium alternator utilizes 6-phase technology as found on the C7 Corvette. The water pump also shares its design efficiencies with that of the C7 Corvette.

The revolutionary system does what no other accessory bracket has done GETS RID OF THE BRACKETS!The Mid-Mount complete all accessories pulled in tighter than drives. Hidden thermostat bypass and heater hose ports with NPT line adapters included.

part #: 20242bk prices

• $2202.95-$2343.31

specifications bepubrac:

• for makes: Chevy
• brand: Holley
• mpn: 20-242bk
• part type: Block Mount
• upc: 090127072813

payments bepubrac:

general bepubrac:

• condition: New
• Car Truck Parts Accessories > Accessory Belts > Belts

seller bepubrac:

• city: USA
• rating: 98.9%
• # reviews: 73425

shipping bepubrac:

• cost: $0.00
• service: UPS Ground
• class: Standard
• transit: 3-5 Days
• carrier: UPS
• type: Fixed

offer bepubrac:

• sold: 0
• quantity: 9
• started: March 28, 2025
• availability: In Stock
• options: Ship-to-home

returns bepubrac:

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

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