CARBURETOR,4150,600CFM,ULTRA XP,HARD BLACK

BRAND NEW HOLLEY ULTRA XP CARBURETOR, HARD CORE GRAY WITH BLACK FINISH, 600 CFM, MECHANICAL SECONDARIES, NO CHOKE, COMPATIBLE WITH GASOLINE

UP TO 38% LIGHTER THAN TRADITIONAL RACE CARBS & HAVE FUEL CAPACITY THAT IS 20% GREATER. HARD CORE GRAY HARD COAT ANODIZED FINISH WITH BLACK BILLET FOR IMPROVED PROTECTION. OTHER FEATURES INCLUDE ALL ALUMINUM CONSTRUCTION, FULLY TUNABLE BILLET METERING BLOCKS, BILLET BASE PLATE, ADJUSTABLE SECONDARY LINKAGE AND KNURLED (HAND ADJUSTABLE) CURB IDLE SCREWS.

HOLLEY ULTRA XP CARBURETORS OFFER NEW FEATURES SUCH AS AN INTEGRATED IDLE BYPASS VALVE THAT ALLOWS FOR IDLE ADJUSTMENTS WHILE MAINTAINING THE CORRECT THROTTLE PLATE TO TRANSFER SLOT RELATIONSHIP, 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.

NOTE: THIS CARBURETOR HAS SQUARE BORE FLANGE BOLT PATTERN. IT REPLACES HOLLEY, EDELBROCK, CARTER AFB & AUTOLITE STYLE CARBURETORS WITH 5 3/16" X 5 5/8" BOLT PATTERN. IF YOU HAVE A SPREADBORE STYLE INTAKE MANIFOLD, YOU NEED AN ADAPTER TO INSTALL THIS CARBURETOR, SIMILAR TO MR. GASKET #1932.

FEATURES:

• HARD CORE GRAY WITH BLACK ANODIZED BILLET ALUMINUM METERING BLOCK & BOOSTER INSERTS
• CONTOURED VENTURRI INLET OFFERS BALANCED AIRFLOW FOR INCREASED HP
• AIR BLEEDS MOVED OUTWARD TO ALLOW SMOOTHER TRANSITION OF AIRFLOW FROM THE TOP OF CARBURETOR INTO VENTURII
• METERING BLOCKS FEATURE IMPROVED DURABILITY, TRUE GASKET SEALING & FULLY ADJUSTABLE (EMULSION BLEEDS, POWER VALVE CHANNEL RESTRICTORS & IDLE FEED RESTRICTORS)
• INTEGRATED IDLE BYPASS VALVE ELIMINATES NEED FOR HOLES IN THROTTLE PLATES & ALLOWS PROPER ADJUSTMENT OF IDLE WHILE MAINTAINING CORRECT THROTTLE PLATE TO TRANSFER SLOT RELATIONSHIP
• DUAL 30CC 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 FUEL LEVEL ADJUSTMENTS
• BUILT IN DRAIN PLUG IN FRONT CENTER OF BOWL PROVIDES EASY ACCESS
• 8AN (O-RINGED) INLET THREADS - CAN BE PLUMBED FROM EITHER SIDE
4 CORNER IDLE
• MECHANICAL SECONDARIES
• ELONGATED (DUAL PATTERN) MOUNTING HOLES ALLOW FITMENT ON INTAKES WITH SQUARE FLANGE (HOLLEY 4150 STYLE) OR LARGE FLANGE (HOLLEY DOMINATOR STYLE)
• KNURLED (HAND ADJUSTABLE) PRIMARY AND SECONDARY CURB IDLE SCREWS ALLOW FOR EASY IDLE ADJUSTMENT WITHOUT THE USE OF TOOLS
• PRIMARY THROTTLE SHAFT CAPPED TO PREVENT ENTRY OF DEBRIS
• FACTORY MACHINED ACCESSORY MOUNTING HOLE FOR EASY ADDITION OF ADJUSTABLE PRIMARY THROTTLE STOP. SECONDARY PUMP CAM LEVER PROVIDES POSITIVE THROTTLE STOP ON SECONDARY SIDE
• STAINLESS STEEL ADJUSTABLE SECONDARY LINK PROVIDES CHOICE OF 1:1 OR PROGRESSIVE SECONDARY THROTTLE ACTUATION FOR CONTROL OF SECONDARY OPENING RATE
• BASEPLATE DESIGNED WITH BOSS CAN BE CONSUMER MACHINED FOR VACUUM SOURCE
• INCLUDES NOTCHED FLOAT & JET EXTENSIONS
• 100% WET-FLOW TESTED BY HOLLEY TECHNICIANS

SPECS:

• BARRELS: 4
• BILLET COLOR: HARD CORE GRAY WITH BLACK
• BOOSTER: DOWN LEG
• CARBURETOR USE: PROFESSIONAL RACE
• CFM: 600
• CHOKE: NONE
• CIRCUIT: 2
• FUEL: GASOLINE
• FUEL INLET: DUAL
• MATERIAL: ALUMINUM
• MODEL: 4150
• PRIMARY MAIN JET: 68
• PRIMARY POWER VALVE: 6.5
• PRIMARY PUMP NOZZLE SIZE: 32
• PRODUCT TYPE: CARBURETOR
• SECONDARIES: MECHANICAL
• SECONDARY MAIN JET: 68
• SECONDARY PUMP NOZZLE SIZE: 32
• SUPERCHARGED APPLICATION: NO
• THROTTLE BORE: 1.563 INCH
• VENTURII SIZE: 1.250 INCH

YOU CAN VIEW AND DOWNLOAD THE COMPLETE ASSEMBLY INSTRUCTION BOOKLETS FOR THIS CARBURETOR HERE.