CARBURETOR,4150,950CFM,ULTRA XP,SHINY/BLACK

Brand New Holley Ultra XP Carburetor, Black Billet & Aluminum Finish, 950 CFM, No Choke, Mechanical Secondaries, Compatible with 4150 Model (Part #0-80805BKX).

Ultra XP carbs are up to 38% lighter than our traditional race carbs, have fuel capacity that is 20% greater and 30 other new features! 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. Other features include all aluminum construction, fully tunable billet metering blocks, billet base plate, adjustable secondary linkage and knurled (hand adjustable) curb idle screws.

NOTE: This model of carburetor has the square bore flange bolt pattern. It can replace Holley, Edelbrock, Carter AFB, and Autolite style carburetors with 5 3/16" x 5 5/8" bolt pattern. If you have a spreadbore style intake manifold, you will need an adapter to install this carburetor. Similar to the Mr. Gasket #1932.

Features:

• Shiny with black anodized billet aluminum metering blocks & base plate
• Designed for use on Drag race, circle track, or any high HP engines
• Contoured venturri inlet offers balanced airflow for increased HP
• Air bleeds moved outward to allow smoother transition of airflow from top of carburetor into the venturii
• Metering blocks feature improved durability, true gasket sealing and fully adjustable
• Integrated idle bypass valve
• Dual 30cc accelerator pumps
• Fuel bowls provide 20% more fuel capacity & control slosh with internal baffling
• Clear sight windows on both sides of bowls
• Built in drain plug in front center of bowl provides easy access to empty contents of bowl
• 8AN (o-ringed) inlet threads
• 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 & secondary curb idle screws for easy idle adjustment
• Primary throttle shaft capped
• Throttle shaft is slabbed & undercut for improved airflow
• Factory machined accessory mounting hole
• Stainless steel adjustable secondary link. Provides choice of 1:1 or progressive secondary throttle actuation
• Baseplate designed with boss that can be consumer machined for vacuum source
• Includes notched float & jet extensions
• 100% wet-flow tested

Specs:

• Barrels: 4
• Billet Color: Shiny with Black Billet
• Booster: Down Leg
• CFM: 950
• Choke: None
• Circuit: 2
• Fuel: Gasoline
• Fuel Inlet: Dual
• Material: Aluminum
• Model: 4150
• Primary Main Jet: 92
• Primary Power Valve: 4.5
• Primary Pump Nozzle Size: 32
• Product Type: Carburetor
• Secondaries: Mechanical
• Secondary Main Jet: 92
• Secondary Pump Nozzle Size: 32
• Supercharged Application: No
• Throttle Bore: 1.750 inch
• Venturii Size: 1.600 inch

You can view and download the complete assembly instruction booklet here.