The original Dominator® revolutionized carburetion back in 1969, crafted specifically for the high-octane world of NASCAR® racing. Over the years, it has undergone numerous refinements, culminating in its most significant transformation yet. Introducing the Gen 3 Ultra Dominator, featuring a completely redesigned main body, cutting-edge calibrations, high-capacity fuel bowls, and options that soar up to 1475 CFM!

The innovative GEN 3 main body stands 5/16" taller than its predecessors! This added height allows for larger radius air entries, meticulously optimized using Computational Fluid Dynamics (CFD) software to ensure a smoother flow into the newly fully machined, big bore venturi.

Additionally, the main body comes equipped with an integrated idle bypass valve, enabling you to adjust the idle while keeping the throttle plate to transfer slot relationship just right. Plus, the extended air cleaner flange makes it a breeze to attach an air scoop with the available scoop adapter.

The Gen 3 also boasts high-capacity fuel bowls that offer 20% more fuel capacity, effectively eliminating starvation issues. With an integrated fuel shelf to reduce aeration and internal baffling to manage fuel slosh, you can trust this carburetor to perform. It features a lightweight all-aluminum construction, 12-hole billet booster inserts, fully tunable billet metering blocks, adjustable external linkage, throttle position sensor mounting points, and knurled (hand adjustable) curb idle screws.

Every calibration has been rigorously tested on both the dyno and the track to ensure you receive nothing short of proven performance!

• Instructions for Part# 0-80901RD
• Carburetor Numerical Listing for Part #0-80901RD

• Constructed entirely of aluminum, shedding 3.8 lbs compared to original models (a 28% weight reduction)
• Eye-catching shiny finish with red anodized billet aluminum metering block and booster inserts
• Perfectly designed for Drag racing, Pro Street, or any high horsepower engines
• Calibrations tailored for today’s larger race engines and modern fuels
• Fully machined from venturi throat to throttle bore for consistent and reliable performance
• Integrated idle bypass valve for idle adjustments while keeping the throttle plate to transfer slot relationship intact
• 12-hole billet booster inserts for exceptional atomization and responsive throttle
• Durable metering blocks with true gasket sealing and fully adjustable features (emulsion bleeds, power valve channel restrictors & idle feed restrictors)
• Dual 50cc accelerator pumps deliver the ideal amount of fuel from idle to full throttle
• Fuel bowls with 20% increased capacity and internal baffling to manage slosh
• Clear sight windows on both sides of the bowls for easy and safe fuel level monitoring
• Convenient drain plug located at the front center of the bowl for quick access to empty its contents
• -8 (o-ringed) inlet threads offer a wide array of plumbing options, plumbable from either side
• Factory-ready TPS mounting points compatible with data acquisition systems (Holley TPS P/N 534-214 available)
• Knurled (hand adjustable) primary and secondary curb idle screws for effortless idle adjustments
• Contoured hex head squirter screws designed for streamlined airflow
• 100% wet-flow tested by Holley technicians to ensure it’s ready to run right out of the box!
• Fully adjustable stainless steel external linkage for 1:1 progressive or soft progressive throttle activation, with no linkage parts under the carburetor

• Barrels: 4
• Billet Color: Shiny with Red Billet
• Booster: Annular Billet Insert w/ Skirt
• CFM: 950
• Choke: None
• Circuit: 2
• Emission Code: 4
• Finish: Shiny
• Fuel: Gasoline
• Fuel Inlet: Dual
• High Speed Air Bleed: 36
• Idle Air Bleed Size: 63
• Material: Aluminum
• Model: 4500
• Needle and Seat Size: 120;120
• Primary Main Jet: 80
• Primary Power Valve: 5.5
• Primary Pump Nozzle Size: 35
• Product Type: Carburetor
• Secondaries: Mechanical
• Secondary Main Jet: 90
• Secondary Pump Nozzle Size: 35
• Supercharged Application: No
• Throttle Bore: 2.000 inch
• Venturi Size: 1.690 inch
• Warranty: Limited 90 Day

• New or modified fuel lines are necessary if you're replacing an existing Holley Dominator 4500 series carburetor. Previous bowl machining was 7/8-20. The Aluminum Ultra Dominator carburetors come assembled with -6AN to SAE 8 port fittings. The center-to-center fuel inlet measurement is now 11.5".