Holley 4500 1150 CFM 3 CIR - HARD BLACK

The original Dominator® revolutionized carburetion back in 1969, specifically crafted for the high-octane world of NASCAR® racing. Over the years, it has undergone significant refinements, culminating in the most substantial update yet with the Gen 3 Ultra Dominator. This powerhouse now features a completely redesigned main body, cutting-edge calibrations, and high-volume fuel bowls, with sizes reaching an impressive 1475 CFM!

One of the standout features of the patent-pending GEN 3 main body is its added height of 5/16" compared to its predecessor. This increased elevation allows for larger radius air entries, which have been meticulously optimized using Computational Fluid Dynamics (CFD) software to ensure a smoother flow into the newly machined, big bore venturi.

Another innovation is the integrated idle bypass valve, which enables you to adjust the idle while keeping the throttle plate and transfer slot relationship intact. Plus, the extended air cleaner flange simplifies air scoop attachment when paired with the available air scoop adapter.

The Gen 3 also boasts high-capacity fuel bowls that provide 20% more fuel capacity to prevent starvation. With an integrated fuel shelf to reduce aeration and internal baffling to manage fuel slosh, this carburetor is built for performance. Other noteworthy features include durable 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 the dyno and at the track, ensuring you get proven performance right out of the box!

• Instructions for Part# 0-80906HB
• Carburetor Numerical Listing for Part #0-80906HB

• All aluminum construction saves 3.8lbs over original models (28% weight savings)
• Hard Core Gray finish with black anodized billet aluminum metering block and booster inserts
• Perfectly designed for Drag racing, Pro Street, or any high horsepower applications
• Calibrations tailored for today’s larger race engines and modern fuels
• Fully machined from venturi throat to throttle bore for reliable and consistent performance
• Integrated idle bypass valve for idle adjustments while keeping the throttle plate to transfer slot relationship accurate
• 12-hole billet booster inserts for excellent atomization and quick throttle response
• Durable metering blocks with true gasket sealing and full adjustability (emulsion bleeds, power valve channel restrictors & idle feed restrictors)
• Dual 50cc accelerator pumps ensure the ideal amount of fuel from idle to full throttle
• Fuel bowls with 20% increased capacity and internal baffling to control slosh
• Clear sight windows on both sides of the bowls for easy and safe fuel level checks
• Convenient built-in drain plug at the front center of the bowl for effortless emptying
• -8 (o-ringed) inlet threads provide a variety of plumbing options and can be connected 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 simple idle adjustments without tools
• Contoured hex head squirter screws for optimized airflow
• 100% wet-flow tested by Holley technicians, ensuring it’s ready to run right away!
• Fully adjustable stainless steel external linkage can be set for 1:1 progressive or soft progressive throttle activation, with no linkage parts under the carburetor

• Barrels: 4
• Billet Color: Hard Core Gray with Black
• Booster: Annular Billet Insert
• CFM: 1150
• Choke: None
• Circuit: 3
• Emission Code: 4
• Finish: Hard Core Gray
• Fuel: Gasoline
• Fuel Inlet: Dual
• High Speed Air Bleed: 36
• Idle Air Bleed Size: 47
• Intermediate Air Bleed: 59
• Material: Aluminum
• Model: 4500
• Needle and Seat Size: 120;120
• Primary Main Jet: 92
• Primary Power Valve: 5.5
• Primary Pump Nozzle Size: 37
• Product Type: Carburetor
• Secondaries: Mechanical
• Secondary Main Jet: 102
• Secondary Pump Nozzle Size: 37
• Supercharged Application: No
• Throttle Bore: 2.000 inch
• Venturi Size: 1.830 inch
• Warranty: Limited 90 Day

• New or modified fuel lines are necessary if you're replacing an existing Holley Dominator 4500 series carburetor. The previous bowl machining was 7/8-20, while 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".