HOLLEY R6654 Carburetor Mercty 2BBL. 1874 4CYL

( Brand: Holley ), ( Fitment Type: Direct Replacement ), ( Manufacturer Part Number: R6654 ), ( Mounting Hardware Included: No ), ( Material: Steel ), ( Vintage Part: Yes ), ( Type: Carburetor ), ( Country Of Origin: United States )

Review HOLLEY 2bbl. Carburetor Is Ford Mercty 4cyl

The Holley R6654 2-barrel carburetor is a high-performance replacement option for 1874 Ford Mercury 4-cylinder engines. This carburetor is specifically designed to deliver reliable and efficient fuel delivery for maximum power and torque.

The Holley R6654 features a classic 2-barrel design with a 670 CFM primary and 340 CFM secondary venturi. The primary venturi is perfect for low-end power and torque, while the secondary venturi provides a broad power band and excellent response at higher RPMs. The carburetor also includes a 650-degree dual-plane intake manifold for optimal engine breathing and power output.

The Holley R6654 is constructed with high-quality materials, including a billet aluminum base and a cast aluminum body. The carburetor also includes a heavy-duty floats, a 1/2 inch NPT fuel inlet, and a 3/8 inch NPT oil return line. The adjustable secondary emulsion system allows for fine-tuning the fuel mixture for optimal engine performance.

The Holley R6654 2-barrel carburetor comes with a 4-inch round air cleaner assembly and a chrome top with a Holley logo. The carburetor is easy to install and requires minimal adjustments for a perfect fit on 1874 Ford Mercury 4-cylinder engines. The Holley R6654 is also compatible with various fuel systems, including electric and mechanical fuel pumps.

The Holley R6654 2-barrel carburetor is designed to provide reliable and consistent fuel delivery, even in demanding driving conditions. It is ideal for street performance, drag racing, and other high-performance applications. With its classic design, high-quality construction, and powerful fuel delivery system, the Holley R6654 is the perfect choice for Ford Mercury 4-cylinder enthusiasts looking to enhance their engine's performance.

The Holley R6654 2bbl carburetor is a popular choice for restoring or upgrading 1874 Ford Mercury 4-cylinder engines. Here are some pros and cons that may help you decide whether this carburetor is the right fit for your project:

1. Holley is a well-known and respected brand in the automotive performance industry, known for producing high-quality carburetors.

2. The R6654 is designed specifically for 4-cylinder Ford Mercury engines, ensuring a precise fit and optimal engine performance.

3. This carburetor features a 670 CFM air flow rate, making it suitable for mild to moderate performance upgrades.

4. Holley offers various customization options, such as different base plates and intake manifolds, to fit various engine configurations.

5. The carburetor comes with a one-year limited warranty, providing peace of mind for customers.

1. The R6654 may require some additional modifications to the intake manifold or fuel system to ensure proper installation and operation.

2. This carburetor may not be suitable for high-performance applications, as it is designed for mild to moderate upgrades.

3. The price tag for this carburetor is higher compared to some other aftermarket options, which may be a consideration for those on a budget.

The Holley R6654 2bbl carburetor is a high-quality and reliable option for those looking to restore or upgrade the carburetion system on their 1874 Ford Mercury 4-cylinder engine. While there are some potential cons to consider, such as the need for some modifications and the higher price tag, the pros far outweigh the cons. For those seeking optimal engine performance and the peace of mind that comes with a reputable brand, the Holley R6654 is a recommended choice.

If you're in the market for a new carburetor for your 1874 Ford Mercury 4-cylinder engine and are looking for a reliable and high-performing option, the Holley R6654 2bbl carburetor is a solid choice. Be sure to carefully consider any potential modifications required for installation and be prepared for the higher price tag compared to some other options. However, the benefits of a Holley carburetor, such as the brand's reputation and the carburetor's specific design for Ford Mercury engines, make it a worthwhile investment for those seeking optimal engine performance.

part # r6654 prices

• $169.00-$195.49

specifications carbcaddie:

• for makes: Ford
• brand: Holley
• fitment type: Direct Replacement
• manufacturer part number: R6654
• mounting hardware included: No
• material: Steel
• vintage part: Yes
• type: Carburetor
• country of origin: United States

seller carbcaddie:

• rating: 99.5%
• # reviews: 3129

returns carbcaddie:

• policy: No Returns

payments carbcaddie:

• wallet: Apple-pay
• credit card: Discover
• other

offer carbcaddie:

• sold: 0
• started: May 6, 2026
• quantity: 1
• availability: In Stock
• options: Ship-to-home

shipping carbcaddie:

• carrier: UPS
• class: Standard
• type: Calculated
• service: UPS Ground
• cost: $16.35
• transit: 2-5 Days

general carbcaddie:

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

Holley R6654 Is Similar To:

• Ford D0of-9510-n 1970 Cobra Jet 429 Scj Manual 4 Speed Holley Carburetor List 4627 As Is (30.6% similar) $223.99–$2672.99. (August 23rd, 2024)
• Holley 12r-5204b Carburetor Throttle Base Plate #0559 (44% similar) $30.00–$59.99. (August 23rd, 2024)
• Holley 12r-4251b Carburetor Throttle Base Plate #0574 (44% similar) $24.95–$57.88. (August 23rd, 2024)
• Holley 3887686 2 Bbl 500 Cfm Marine Carburetor Volvo Penta 4.3l For Parts Or Rebuild (51.4% similar) $159.99–$299.95. (August 23rd, 2024)
• Holley 36-181 Carburetor Metering Jet 2 Of Each Size Contact Prior Ordering (39.7% similar) $94.99–$99.89. (August 24th, 2024)
• Holley 8485-1947 Primary Front Metering Block 18502 600 Vacuum Secondary Carburetor (30.2% similar) $49.99–$200.00. (August 24th, 2024)
• Holley 37-1536 Carburetor Renew Kit 4160 (50% similar) $170.95. (August 25th, 2024)
• Holley 80457-2 List Carburetor 600cfm 4bbl 4160 Main Body Only With New Gasket (37.3% similar) $8.35–$11.15. (August 26th, 2024)
• Holley 61601 Carburetor Metering Block Stamped 6835 And #0579 (44.4% similar) $19.50–$95.04. (August 26th, 2024)
• Holley 34r-10880b Carburetor Choke Assembly 41r-953b #0564 (45.6% similar) $40.02. (August 26th, 2024)
• Holley 6075-28 Carburetor Metering Block Stamped 6075 28 #0575 (45.8% similar) $26.99. (August 26th, 2024)