BRAND NEW HOLLEY ULTRA XP CARBURETOR, 850 CFM, SHINY WITH RED BILLET, MECHANICAL SECONDARIES, 4150, COMPATIBLE WITH GASOLINE
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.
INTEGRATED IDLE BYPASS VALVE ELIMINATES THE NEED FOR HOLES IN THROTTLE PLATES AND ALLOWS FOR PROPER ADJUSTMENT OF IDLE WHILE MAINTAINING CORRECT THROTTLE PLATE TO TRANSFER SLOT RELATIONSHIP. HELPS MAINTAIN GOOD IDLE CONTROL WHEN USING RADICAL CAMSHAFTS.
OTHER FEATURES INCLUDE ALL ALUMINUM CONSTRUCTION, FULLY TUNABLE BILLET METERING BLOCKS, BILLET BASE PLATE, ADJUSTABLE SECONDARY LINKAGE AND KNURLED (HAND ADJUSTABLE) CURB IDLE SCREWS. FACTORY MACHINED ACCESSORY MOUNTING HOLE FOR EASY ADDITION OF ADJUSTABLE PRIMARY THROTTLE STOP. NEW SECONDARY PUMP CAM LEVER DESIGNED TO PROVIDE POSITIVE THROTTLE STOP ON SECONDARY SIDE.
NOTE: THIS CARB HAS SQUARE BORE FLANGE BOLT PATTERN. 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:
ALUMINUM CONSTRUCTION
SHINY WITH RED ANODIZED BILLET ALUMINUM METERING BLOCKS & BASE PLATE
DRAG RACE, CIRCLE TRACK, OR ANY HIGH HP ENGINES
CONTOURED VENTURRI INLET
AIR BLEEDS MOVED OUTWARD TO ALLOW SMOOTHER TRANSITION OF AIRFLOW FROM TOP OF CARBURETOR INTO VENTURII
