HOLLEY 80277 Pro Jection Cfm Throttle Body Adapter Plate 670 4-BARREL 61R-681B

( Brand: Holley ), ( Manufacturer Part Number: 80277 ), ( Type: Throttle Body )

Review HOLLEY Pro jection 670 Cfm Throttle Body And 4-barrel Adapter Plate

Holley 80277 Pro-jection 670 CFM Throttle Body with 4-Barrel Adapter Plate (61r-681b)

The Holley 80277 Pro-jection Throttle Body is a high-performance upgrade for your classic muscle car or hot rod, delivering a massive 670 CFM airflow to ensure maximum power and throttle response. This throttle body is designed to replace your stock 4-barrel carburetor setup, offering a more modern and precise fuel delivery system.

The throttle body features a polished aluminum construction, which not only enhances its aesthetic appeal but also promotes better heat dissipation for consistent performance under various operating conditions. The 1.54-inch vacuum secondary and 1.75-inch primary bore sizes ensure optimal airflow while maintaining a clean and smooth throttle response.

The Holley 80277 Pro-jection Throttle Body comes with a 4-barrel adapter plate (61r-681b), making it compatible with a wide range of applications, including those using Holley 4150 or 4160 series carburetors. The adapter plate is precision-engineered for a perfect fit and easy installation, ensuring a secure and leak-free connection.

This throttle body is equipped with a built-in idle air control (IAC) circuit, allowing you to tune the idle speed for smooth and consistent engine operation. The included 36-120 degree throttle cable bracket provides versatility in mounting the throttle cable, ensuring a proper fit in your engine bay.

With its impressive airflow capacity, precision engineering, and easy installation, the Holley 80277 Pro-jection Throttle Body with 4-barrel adapter plate (61r-681b) is an excellent choice for performance enthusiasts seeking to upgrade their classic car's fuel delivery system for improved power, throttle response, and drivability.

Product: Holley 80277 Projection 670 CFM Throttle Body 4-Barrel Adapter Plate 61r-681b

1. High Flow Rate: The Holley 80277 offers a high airflow rate of 670 CFM, which can significantly improve the performance of your engine.

2. Projection Design: The projection design allows for easier installation and adjustment compared to traditional throttle bodies.

3. Adapter Plate Included: The kit comes with a 4-barrel adapter plate, making it suitable for a wide range of vehicles.

4. Quality Brand: Holley is a well-known brand in the automotive industry, known for producing high-quality performance parts.

1. Price: The Holley 80277 is more expensive than some other throttle bodies on the market.

2. Complex Installation: While the projection design can make installation easier, it may still require some technical knowledge.

3. May Not Fit all Vehicles: Although the adapter plate is included, it may not be compatible with all vehicles, especially those with unique throttle body configurations.

The Holley 80277 Projection Throttle Body offers a high airflow rate and a projection design that makes it easier to install and adjust. However, it is more expensive than some other options and may not fit all vehicles due to the adapter plate. If you're looking to significantly improve your engine's performance and have the technical knowledge to install it, the Holley 80277 could be a good choice. If cost is a concern or if you're unsure about the fit, it may be worth considering other options.

If you're confident in your technical abilities and have the budget, the Holley 80277 Projection Throttle Body could be a great addition to your vehicle. However, it's always a good idea to thoroughly research compatibility before making a purchase. If you're unsure, consider discussing your needs with a professional mechanic.

Details:

Holley Pro-Jection 670 cfm throttle body part number 80277 with 4-barrel adapter plate 61R-681B. It is dusty/dirty from sitting and use. Throttle body was last used a few years ago, has sat on the shelf since. Will probably need a light cleaning/freshen before use.

Please verify part number and pictures match your application. See pics for condition.

part #: 80277 prices

• $49.99-$52.99

specifications throobo:

• brand: Holley
• mpn: 80277
• type: Throttle Body

payments throobo:

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

shipping throobo:

• cost: $0.00
• carrier: USPS
• class: Standard
• transit: 2-6 Days
• type: Calculated
• service: USPS Ground Advantage

offer throobo:

• availability: In Stock
• started: November 12, 2025
• quantity: 1
• best offers: True
• options: Ship-to-home
• sold: 0

general throobo:

• condition: Used
• Car Truck Parts Accessories > Air Fuel Delivery > Throttle Bodies

returns throobo:

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

seller throobo:

• city: Sheboygan Falls, Wisconsin
• # reviews: 31970
• rating: 100.0%

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