0-4412HBX Holley Ultra XP 2BBL Carburetor

736.16

500 CFM - 2300 - Hard Core Gray - Gasoline;

500 CFM - 2300 - Hard Core Gray - Gasoline;All aluminum construction - for nearly 50% weight savings over zinc version; Hard Core Gray with Black™ billet aluminum metering block and base plate; No choke tower for unobstructed airflow; Air bleeds moved outward to allow a smoother transition of airflow; Air cleaner flange centered over venturii for improved airflow and performance. 5/16-18 bent air cleaner stud included; Down-leg boosters for improved fuel signal; Contoured hex head squirter screw for streamlined airflow; Internal pump passage on metering block equipped with tunable bleed off; Same 1-3/8” Venturii & 1-11/16” Throttle Bore size and Throttle Plate/Throttle Shaft size of original 0-4412; Fuel bowl provides 20% more fuel capacity while controlling slosh with internal baffling; Clear sight windows on both sides of bowl for easy & safe fuel level adjustments; Fuel trough designed into floor of bowl to route fuel flow directly to the jets and assists in keeping jets covered by fuel; Built in drain plug provides easy access to empty contents of bowl; -8 (O-ring) inlet threads offer a large variety of plumbing options (come with an extended -8 O-ring to -8AN male adapter and -8 plug). Can be plumbed from either side; Throttle shaft rides in oil impregnated sintered bronze bushings for smooth throttle actuation; Throttle shaft capped to prevent entry of debris & contaminates; 30cc pump with metal lever. Anti-siphon valve in mainbody to reduce pump pull over; Dedicated race-only throttle lever with all unnecessary street attachment points & tangs removed; Knurled (hand adjustable) curb idle screw allows for easy idle adjustment without the use of tools; Set screw for wide open throttle stop adjustment; Wedge float provides fuel control while cornering; 100% wet-flow tested by Holley technicians to assure it arrives ready to run!;

• All aluminum construction - for nearly 50% weight savings over zinc version
• Hard Core Gray with Black™ billet aluminum metering block and base plate
• No choke tower for unobstructed airflow
• Air bleeds moved outward to allow a smoother transition of airflow
• Air cleaner flange centered over venturii for improved airflow and performance. 5/16-18 bent air cleaner stud included
• Down-leg boosters for improved fuel signal
• Contoured hex head squirter screw for streamlined airflow
• Internal pump passage on metering block equipped with tunable bleed off
• Same 1-3/8” Venturii & 1-11/16” Throttle Bore size and Throttle Plate/Throttle Shaft size of original 0-4412
• Fuel bowl provides 20% more fuel capacity while controlling slosh with internal baffling
• Clear sight windows on both sides of bowl for easy & safe fuel level adjustments
• Fuel trough designed into floor of bowl to route fuel flow directly to the jets and assists in keeping jets covered by fuel
• Built in drain plug provides easy access to empty contents of bowl
• -8 (O-ring) inlet threads offer a large variety of plumbing options (come with an extended -8 O-ring to -8AN male adapter and -8 plug). Can be plumbed from either side
• Throttle shaft rides in oil impregnated sintered bronze bushings for smooth throttle actuation
• Throttle shaft capped to prevent entry of debris & contaminates
• 30cc pump with metal lever. Anti-siphon valve in mainbody to reduce pump pull over
• Dedicated race-only throttle lever with all unnecessary street attachment points & tangs removed
• Knurled (hand adjustable) curb idle screw allows for easy idle adjustment without the use of tools
• Set screw for wide open throttle stop adjustment