About this product
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.
Description supplied by Southwest Speed through its current Shopify listing. Product, performance, and health claims are the seller’s and have not been independently verified by StorkScout.
