Holley Gen 3 Marine Ultra Dominator Carburetor - 0-80903HBM
$2,049.95
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The patent pending GEN 3 main–body is 5/16" taller than the previous generation! This new height allowed for larger radius air entries which were optimized using Computational Fluid Dynamics (CFD) software to deliver smoother flow into new fully machined, big bore venturii.
The main-body also features an integrated idle bypass valve that allows for idle adjustments while maintaining the correct throttle plate to transfer slot relationship as well as an extended air cleaner flange for easy air scoop attachment when using the available air scoop adapter.
The Gen 3 utilizes high capacity fuel bowls which feature 20% more fuel capacity to eliminate starvation, integrated fuel shelf to minimize fuel aeration and internal baffling to control fuel slosh.
Other features include 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. Each calibration has been dyno tested to deliver proven performance!
Holley Gen 3 Marine Ultra Dominator Carburetor - 0-80903HBM
$2,049.95
Features:
- All aluminum construction saves 3.8lbs. over original models (28% weight savings)
- Gray anodized finish with black anodized billet aluminum metering block and booster inserts
- Designed for use on Marine high horsepower engines
- Fully machined from venturi throat to throttle bore for predictable & repeatable performance
- Integrated idle bypass valve allows for adjustment of idle while maintaining correct throttle plate to transfer slot relationship
- 12 hole billet booster inserts for superior atomization and crisp throttle response
- Metering blocks feature improved durability, true gasket sealing and fully adjustable (emulsion bleeds, power valve channel restrictors & idle feed restrictors)
- Dual 50cc accelerator pumps provide the perfect amount of fuel from idle to full throttle
- Fuel bowls provide 20% more fuel capacity while controlling slosh with internal baffling
- Clear sight windows on both sides of bowls for easy and safe fuel level adjustments
- Built in drain plug in front center of bowl provides easy access to empty contents of bowl
- 8 (o-ringed) inlet threads offer a large variety of plumbing options and can be plumbed from either side
- Factory ready TPS mounting points for use with data acquisition systems (Holley TPS P/N 534-214 available)
- Knurled (hand adjustable) primary and secondary curb idle screws allow for easy idle adjustment without the use of tools
- Contoured hex head squirter screws for streamlined airflow
- Fully adjustable stainless steel external linkage can be adjusted for 1:1 progressive, or soft progressive throttle activation. No linkage parts under the carburetor
- 100% wet-flow tested by Holley technicians to assure it arrives ready to run!
- J-Style vent tubes
Product Specifications:
- Product Details: 1050 CFM - 4500 - Mechanical Secondaries - Hard Core Gray - Gasoline
- Adjustable Air Bleeds: Yes
- Adjustable Emulsion Bleeds: Yes
- Adjustable Idle Feed Restrictors: Yes
- Air Cleaner Flange Diameter: 7 1/4
- Barrel Quantity: 4
- Barrels: 4
- Barrels Quantity: 4
- Billet Color: Hard Core Gray with Black
- Body Color: Hard Core Gray
- Body Finish: E-Coated
- Body Material: Aluminum
- Booster: Annular
- Booster Design: Annular
- Carburetor Material: Aluminum
- Carburetor Use: Marine
- CFM: 1050
- CFM Rating: 1050
- Choke: None
- Choke Type: None
- Circuit Count: 3
- Color: Hard Coat Gray
- Condition: New
- Cubic Feet Per Minute Rating: 1050
- Finish: Hard Core Gray
- Flange Shape: Square
- Flange Type: Dominator/4500
- Float Level: Externally Adjustable
- Fuel: Gasoline
- Fuel Inlet: Dual
- Fuel Inlet Center to Center: 11.5
- Fuel Inlet Count: Dual
- Fuel Inlet Type: -8 ORB
- Fuel Type: Gasoline
- Gasket Or Seal Included: Yes
- Grade Type: Race
- High Speed Air Bleed: 43
- Idle Air Bleed Size: 65
- Intermediate Air Bleed: 71
- Linkage Attached: Yes
- Marine Approved: Yes
- Marine Engine Size: Universal
- Marine Use: Yes
- Material: Aluminum
- Meter Block Material: Billet Aluminum
- Metering Block Color: Black
- Model: 4500
- Mounting Hardware Included: No
- Mounting Hole Quantity: 4
- Needle and Seat Size: 120;120
- Part Type: Carburetor
- Primary Float Type: Center Hung Nitrophyl
- Primary Jet Diameter: 84
- Primary Main Jet Size: 84
- Primary Power Valve: 6.5
- Primary Pump Nozzle Size: 35
- Primary Throttle Bore Diameter: 2
- Primary Venturii Diameter: 1.69
- Product Type: Marine Carburetor
- Secondaries: Mechanical
- Secondary Barrel Type: Mechanical
- Secondary Float Type: Center Hung Notched Nitrophyl
- Secondary Jet Extensions: No
- Secondary Main Jet Size: 84
- Secondary Pump Nozzle Size: 35
- Secondary Throttle Bore Diameter: 2.000
- Series: Gen 3 Dominator
- Spacer Included: No
- Supercharged Application: No
- Throttle Bore Diameter: 2.000 inch
- Vacuum Ports: None
- Venturii Size: 1.690 inch
Installation Notes:
New or modified fuel lines are required (if replacing existing Holley Dominator 4500 series carburetor - previous bowl machining was 7/8-20, Aluminum Ultra Dominator carburetors come assembled with -6AN to SAE 8 port fittings). 0-80903HBM center to center fuel inlet measurement is now 11.5"