Holley 0-80901HB Gen 3 Ultra Dominator® HP Race Carburetor

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 and track tested to deliver proven performance!

Resources

Installation Instructions

Barrel	Four
Billet Color	Hard Core Gray with Black
Booster Type	Annular Billet Insert w/ Skirt
Carburetor Type	4500
CFM	950
Choke	None
Circuit	2
Description_ASC	Holley Performance Emission Code 4: This part is legal for sale or use on Racing Use Only Vehicles. The following vehicles are considered Racing Use Only Vehicles: Racing Use Only Vehicles are vehicles that are used exclusively for competition that are not registered and that may never be used on the street. WARNING: It is against the law to install this part on an Emissions Controlled Vehicle
Description_ASM	1 x 4 Gas 2-Circuit Metering
Description_DEF	Carburetor
Description_DES	Gen 3 Ultra Dominator® HP Race Carburetor
Description_EXT	Gen 3 Ultra Dominator® HP Race Carburetor; 4 bbl; 950 cfm; 2 Circuit Metering; Model 4500UHP; 1x4 Gas; No Choke; Dual Fuel Inlet; Gray w/Black Metering Blocks/Booster Inserts;
Description_FAB	12 Hole Billet Booster Superior Atomization/Throttle Response
Description_FAB	28% Weight Savings
Description_FAB	All Aluminum Construction Saves 3.8 lbs. Over Original Models
Description_FAB	Calibrations For Todays Larger Race Engines and New Fuels
Description_FAB	Clear Sight Windows On Sides Of Bowl For Fuel Level Adjustments
Description_FAB	Contoured Hex Head Squirter Screws For Streamlined Airflow
Description_FAB	Drain Plug On Bowl Provides Easy Access To Empty Bowl
Description_FAB	Dual 50CC Accelerator Pumps Fuel From Idle To Full Throttle
Description_FAB	Fuel Bowl Provides 20% More Fuel Capacity Controls Slosh
Description_FAB	Fully Machined From Venturi Throat To Throttle Bore
Description_FAB	Integrated Idle Bypass Valve Allows For Adjustment Of Idle
Description_FAB	Metering Blocks Feature Improved True Gasket Sealing
Description_INV	4500 950 CFM 2 CIR-HARD BLACK
Description_LAB	Proposition 65
Description_MKT	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 and track tested to deliver proven performance!
Description_MKT	The original Dominator(R) took carburetion to another level in 1969 when it was developed for NASCAR(R) racing. It has been refined over the years and has received its biggest change ever. The Gen 3 Ultra Dominator features a brand new main body, brand new state of the art calibrations, high volume fuel bowls and sizes up to 1475 CFM!The patent pending GEN 3 main body is 5/16 in. 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 and track tested to deliver proven performance!
Description_SHO	Carburetor
Emission	Without EGR
finish	Hard Core Gray
Flange	4500
Fuel Inlet	Dual
Fuel Type	Gasoline
height	9.5
High Speed Air Bleed	36
Idle Air Bleed Size	63
length	14.5
LTL	N
Material	Aluminum
Needle and Seat Size	120;120
Primary Main Jet	80
Primary Power Valve	5.5
Secondary Main Jet	90
Secondary Pump Nozzle Size	35
Secondary Type	Mechanical
Supercharged Application	No
Throttle Bore	2.000 in.
Type	Automotive
Usage	Racing
Venturii Size	1.690 in.
WARNING CA Proposition 65	Yes
WARNING CA Proposition 65 Message	WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
weight	10.65
width	12.6