Skip to product information
1 of 4

CARBURETOR,4150,650CFM,ULTRA XP,C/T,SHINY/BLACK

CARBURETOR,4150,650CFM,ULTRA XP,C/T,SHINY/BLACK

SKU:HOL 0-80812BKX

Regular price $1,056.95
Regular price Sale price $1,056.95
View full details

BRAND NEW HOLLEY ULTRA XP CIRCLE TRACK CARBURETOR, SHINY & BLACK FINISH, 650 CFM, MECHANICAL SECONDARIES, NO CHOKE, COMPATIBLE WITH GASOLINE

SPECIFICALLY CALIBRATED FOR CIRCLE TRACK & FEATURES ANTI-SIPHON VALVE IN MAIN BODY, HIGH CAPACITY FUEL BOWLS WITH 20% MORE FUEL CAPACITY TO ELIMINATE STARVATION, INTEGRATED FUEL SHELF TO MINIMIZE FUEL AERATION & INTERNAL BAFFLING TO CONTROL FUEL SLOSH. ALL ALUMINUM CONSTRUCTION, FULLY TUNABLE BILLET METERING BLOCKS, BILLET BASE PLATE, WEDGE FLOATS, ADJUSTABLE SECONDARY LINKAGE & KNURLED (HAND ADJUSTABLE) CURB IDLE SCREWS. 100% WET-FLOW TESTED BY HOLLEY TECHNICIANS.

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:

  • CALIBRATED SPECIFICALLY FOR CIRCLE TRACK
  • SET SCREW IN BASE PLATE FOR WIDE OPEN THROTTLE STOP ADJUSTMENT
  • PTFE COATED THROTTLE SHAFTS RIDES IN OIL IMPREGNATED BRONZE BUSHINGS FOR SMOOTH THROTTLE ACTUATION
  • ANTI-SIPHON VALVE IN MAIN BODY TO REDUCE PUMP PULLOVER
  • CONTOURED VENTURRI INLET FOR BALANCED AIRFLOW FOR INCREASED HP
  • AIR BLEEDS MOVED OUTWARD ALLOWING SMOOTHER TRANSITION OF AIRFLOW FROM TOP OF CARB INTO VENTURII
  • METERING BLOCKS - 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 FOR PROPER ADJUSTMENT OF IDLE WHILE MAINTAINING CORRECT THROTTLE PLATE TO TRANSFER SLOT RELATIONSHIP
  • DUAL 30CC ACCELERATOR PUMPS PROVIDE 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 FOR EASY ACCESS TO EMPTY CONTENTS
  • -8 (O-RINGED) INLET THREADS OFFER VARIETY OF PLUMBING OPTIONS & CAN BE PLUMBED FROM EITHER SIDE - COMES FROM FACTORY WITH 8AN INLET FITTINGS
  • 4 CORNER IDLE TO CONTROL YOUR IDLE SYSTEM
  • INTERNAL PUMP PASSAGE IN METERING BLOCK EQUIPPED WITH TUNABLE BLEED OFF FOR FURTHER ACCELERATOR PUMP TUNING
  • KNURLED (HAND ADJUSTABLE) PRIMARY & SECONDARY CURB IDLE SCREWS ALLOW FOR IDLE ADJUSTMENT WITHOUT TOOLS
  • PRIMARY THROTTLE SHAFT CAPPED
  • FACTORY MACHINED ACCESSORY MOUNTING HOLE FOR ADDITION OF ADJUSTABLE PRIMARY THROTTLE STOP. NEW SECONDARY PUMP CAM LEVER PROVIDE POSITIVE THROTTLE STOP ON SECONDARY SIDE
  • SET UP WITH 1:1 THROTTLE ACTUATION
  • BASEPLATE - BOSS THAT CAN BE CONSUMER MACHINED FOR VACUUM SOURCE
  • INCLUDES WEDGE FLOATS

SPECS:

  • BARRELS: 4
  • BILLET COLOR: SHINY WITH BLACK BILLET
  • BOOSTER: DOWN LEG
  • CARBURETOR USE: PRO RACE CIRCLE TRACK
  • CFM: 650
  • CHOKE: NONE
  • CIRCUIT: 2
  • FUEL: GASOLINE
  • FUEL INLET: DUAL
  • MATERIAL: ALUMINUM
  • MODEL: 4150
  • PRIMARY MAIN JET: 74
  • PRIMARY POWER VALVE: 6.5
  • PRIMARY PUMP NOZZLE SIZE: 32
  • PRODUCT TYPE: CARBURETOR
  • SECONDARIES: MECHANICAL
  • SECONDARY MAIN JET: 82
  • SECONDARY PUMP NOZZLE SIZE: 31
  • SUPERCHARGED APPLICATION: NO
  • THROTTLE BORE: 1.688 INCH
  • VENTURII SIZE: 1.250 INCH

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