HOLLEY 703R-3 Top Pro Dominator Tunnel Plate 4500

( Brand: Holley ), ( Type: Tunnel Ram Top Plate ), ( Manufacturer Part Number: 703R-3 ), ( Vintage Part: Yes )

Review HOLLEY Pro Dominator 4500 Tunnel Top Plate Bbc fits RAM 2X4

The Holley 703R-3 Pro Dominator 4500 Tunnel Ram Top Plate for BBC engines is a high-performance intake manifold component designed to deliver optimal airflow and fuel distribution for increased horsepower and torque. This top plate is engineered specifically for use with Holley's Pro Dominator 4500 CFM carburetor and 750 Double Pumper fuel pump, making it an ideal choice for hot rods, muscle cars, and other high-performance applications.

Crafted from high-quality aluminum, this top plate features a polished finish that not only looks great under the hood but also helps to dissipate heat for improved engine performance. The tunnel ram design provides an efficient airflow path from the carburetor to the engine, reducing velocity losses and ensuring a consistent fuel-air mixture for optimal combustion.

The 703R-3 Pro Dominator top plate is designed to bolt directly to the BBC (BBC stands for Chevrolet Small-Block Bore-Bore Centered) engine, making installation straightforward and hassle-free. The plate includes pre-drilled and countersunk mounting holes for easy attachment to the engine block and intake manifold. Additionally, the plate is designed to work with Holley's 6-71 supercharger, allowing for the addition of forced induction for even greater power gains.

This top plate is also equipped with a built-in fuel crossover, which ensures that fuel is evenly distributed to both sides of the intake manifold. The crossover includes a removable filter element, which can be easily cleaned or replaced to maintain optimal fuel flow and prevent contamination.

The Holley 703R-3 Pro Dominator 4500 Tunnel Ram Top Plate is a high-performance intake manifold component that delivers improved airflow and fuel distribution for increased power and torque. Its polished aluminum construction, tunnel ram design, and built-in fuel crossover make it a popular choice among hot rod and muscle car enthusiasts looking to take their build to the next level.

The Holley 703R-3 Pro Dominator 4500 Tunnel Ram Top Plate for BBC (Big Block Chevy) engines is a popular choice for performance enthusiasts looking to upgrade their carburetor setup. Here are some pros and cons that might help you make an informed decision:

1. High-Performance: The Holley 703R-3 Pro Dominator carburetor is known for its high-performance capabilities. It can support large fuel systems and deliver precise fuel metering, leading to improved engine performance, increased power, and better fuel economy.

2. Customizable: Holley offers a wide range of customization options for the Pro Dominator carburetor. You can choose from various base plates, intake manifolds, and other accessories to fit your specific engine and performance needs.

3. Durable: The 703R-3 Pro Dominator carburetor is built with high-quality materials and advanced engineering techniques. It is designed to withstand the demands of high-performance applications and can last for many years with proper maintenance.

4. Easy Installation: The tunnel ram top plate is a simple addition to the carburetor setup, making it easy to install. It also comes with clear instructions and can be installed in a few hours with basic hand tools.

5. Improved Fuel Economy: By delivering precise fuel metering, the Holley 703R-3 Pro Dominator carburetor can help improve fuel economy. This is especially beneficial for those who use their vehicles for long commutes or want to reduce their fuel costs.

1. Expensive: The Holley 703R-3 Pro Dominator carburetor and its associated parts, including the tunnel ram top plate, can be quite expensive. This might be a deterrent for some enthusiasts who are working on a tight budget.

2. Complex Setup: While the Holley Pro Dominator carburetor is known for its performance capabilities, it can be a complex setup for some enthusiasts. It requires a good understanding of carburetor tuning and fuel system design to achieve optimal performance.

3. Tuning Requirements: The Holley 703R-3 Pro Dominator carburetor requires tuning to achieve optimal performance. This can be a time-consuming and expensive process, especially for those who are not experienced in carburetor tuning.

4. Requires Fuel Pressure Regulator: The Holley 703R-3 Pro Dominator carburetor requires a fuel pressure regulator to maintain the correct fuel pressure. This is an additional cost and complexity that some enthusiasts might not be willing to take on.

The Holley 703R-3 Pro Dominator 4500 Tunnel Ram Top Plate for BBC engines is a high-performance carburetor setup that offers a wide range of customization options and durability. However, it comes with a high price tag, complex setup, and tuning requirements. If you are looking for a high-performance carburetor setup and are willing to invest the time and money into tuning it, then the Holley 703R-3 Pro Dominator is an excellent choice. However, if you are working on a tight budget or are not experienced in carburetor tuning, then you might want to consider other options.

If you are looking for a high-performance carburetor setup for your BBC engine and are willing to invest the time and money into tuning it, then the Holley 703R-3 Pro Dominator 4500 Tunnel Ram Top Plate is an excellent choice. However, if you are on a tight budget or are not experienced in carburetor tuning, you might want to consider other options, such as a Holley Double Pumper or a Holley Street Avenger carburetor. These options offer good performance capabilities at a lower cost and are easier to tune for those without extensive carburetor tuning experience.

Details:

Very clean with no issues or repairs. This is a nice looking slightly used dominator top plate.

part #: 703r3 prices

• $160.00-$399.00

specifications inputmanifolds:

• for models: 2x4, Ram
• brand: Holley
• type: Tunnel Ram Top Plate
• manufacturer part number: 703R-3
• vintage part: Yes

offer inputmanifolds:

• started: August 24, 2025
• options: Ship-to-home
• quantity: 1
• availability: In Stock
• sold: 0

general inputmanifolds:

• condition: Used
• Car Truck Parts Accessories > Air Fuel Delivery > Intake Manifolds

seller inputmanifolds:

• rating: 98.4%
• # reviews: 837
• city: Orangeville, Pennsylvania

returns inputmanifolds:

• policy: No Returns

shipping inputmanifolds:

• class: Standard
• type: Fixed
• transit: 4-10 Days
• carrier: USPS
• cost: $12.00
• service: USPS Ground Advantage

payments inputmanifolds:

• money order
• wallet: Apple-pay
• credit card: Diners-club
• other

Holley 703R-3 Is Similar To:

• Holley 300-25 Strip Dominator Intake Chevy Small Block V8 (46.7% similar) 300-25 Holley strip dominator intake - Chevy small block V8: manifold 1957 -1986 262CI-400CI, 1987 -LATER with aluminum heads: heads;. Buyer pays return shipping. A signature is required on all ups orders over $750...(June 3rd, 2024)
• Weiand 2991-2993 Big Block Chev 2991 2993 Tunnel Ram Holley Dominator Top (31.3% similar) Weaned dominator 4500 tunnel ram top used good condition 2991 2993...(June 3rd, 2024)
• Holley 300-213 Hi-ram Lower Manifold Gm Ls3 l92 (30.9% similar) 300-213 Holley hi-ram lower manifold - gm LS3/L92: carburetors base only plenum-top-mounting fabrication flange available ;plenum top gasket type 3/32 round o-ring cord; mounting standard LS3 molded o-ring; port size 2.49 height x 1.21 wide; runner length 6.50, as-cast cross-sectional area...(June 6th, 2024)
• Holley 300-113 Hi-ram Intake Gm Ls3 l92 (33.3% similar) Coupling this hi-ram intake with the high flowing LS3/L92 cylinder heads has outstanding potential for n/a and forced induction applications at a budget-minded cost. The base is designed to be modular in configuration accept a wide range of carburetors and efi tops attractive builders...(June 8th, 2024)
• Holley 300-226 Hi Compatible With replacement For Ram Itake Base Carb Ls1 ls2 ls6 (30.6% similar) Style: tunnel ram. Operating range high: 8000 rpm. Port size height : 2.49 in. Engine deck: oem. Hardware included: no. Holley hi ram intake base - carb LS1/LS2/LS6 300-226. Base only: yes. Cast/fabricated: cast. Gaskets included: no. Finish: natural. Material: aluminum...(June 8th, 2024)
• Holley 300-226bk Hi-ram Lower Manifold Gm Ls1 ls2 ls6-black (31.1% similar) A signature is required on all ups orders over $750. Buyer pays return shipping. 300-226BK Holley hi-ram lower manifold - gm LS1/LS2/LS6-BLACK: LS1/LS2/LS6 cathedral port carburetors base only plenum-top-mounting fabrication flange available ;port size 2.49 height x 1.21 wide; mounting gasket...(June 9th, 2024)
• Holley Sniper 820102-1 Ls Fabricated Intake Low Pro With 92mm T-body Ls1 Ls2 Ls6 5.3 6.0 Cathedral (32.7% similar) ...(June 12th, 2024)
• Holley 300-303 86-95 Mustang Gt 5.0 Sbf Hi-ram Intake Manifold Top Plate 95mm (36.2% similar) It is in perfect working order. All threaded holes and gasket surfaces are perfect. Shipping is free of charge. 1986 -1995 mustang 5.0L Holley 95MM hi-ram side mount top plate. Please view the pictures provided as it will come exactly shown...(June 15th, 2024)
• Holley 701r 16 300 Olds Cutlass 307 350 403 Street Dominator Sandblasted (43.6% similar) The manufacturer part number for this intake manifold is 701R 16 300. This Holley intake manifold is designed for use with Oldsmobile cutlass 307, 350, and 403 model's. The sandblasted finish gives it a sleek look that will complement any engine...(June 22nd, 2024)
• Chevrolet 3886948 Camaro Corvette Chevelle Bbc Intake Manifold Holley (9.2% similar) This is the original Holley iron manifold by Chevrolet. Original on my 68 375 horse Camry but was used the shovelled corvette high oval port motors...(June 27th, 2024)
• Holley 701r-7 Mopar Street Dominator Intake Manifold 4b Aluminum Small Block318 340 360 (40.5% similar) This is a good used holly intake for small block Mopar all thread ls are in shape, it dose have couple layers of paint but would clean up nice...(June 27th, 2024)