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
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.
