Holley 650 CFM XP Carburetor Mechanical Secondary Tunable Billet Metering Blocks

Description

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Product Description
Holley 650 CFM XP Carburetor Mechanical Secondary Tunable Billet Metering Blocks
Xtreme Performance - Holley Ultra XP? carburetors! 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! They're available in our all-new Hard Core Gray? hard coat anodized finish with Black? billet for improved corrosion protection. They're also available in natural tumble-polished aluminum with your choice of Black? or Red? metering blocks and base plate. The Aluminum Ultra XP comes in 600, 650, 750, 850, and True 950-CFM. 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. Holley Ultra XP carburetors are the ultimate in square bore race carburetors!
Features:
Aluminum Construction (saves 4.5 lbs - 38% weight savings)
Hard Core Gray with black anodized billet aluminum metering block and booster inserts
Designed for use on Drag race, circle track, or any high horsepower engines
Contoured venturri inlet offers balanced airflow for increased horsepower
Air bleeds moved outward to allow a smoother transition of airflow from the top of the carburetor into the venturii
Metering blocks feature improved durability, true gasket sealing and fully adjustable (emulsion bleeds, power valve channel restrictors & idle feed restrictors)
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.
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 easy and safe fuel level adjustments
Built in drain plug in front center of bowl provides easy access to empty contents of bowl
8AN (o-ringed) inlet threads offer a large variety of plumbing options and can be plumbed from either side
4 corner idle allows you to precisely control your idle system
Specs:
Barrels: 4
Billet Color: Hard Core Gray with Black
Booster: Down Leg
Brand: Holley
CFM: 650
Choke: None
Circuit: 2
Emission Code: 3
Finish: Hard Core Gray
Fuel: Gasoline
Fuel Inlet: Dual
Material: Aluminum
Model: 4150
Primary Main Jet: 70
Primary Power Valve: 6.5
Primary Pump Nozzle Size: 32
Product Type: Ultra XP Carburetor
Secondaries: Mechanical
Secondary Main Jet: 70
Secondary Pump Nozzle Size: 32
Supercharged Application: No
Throttle Bore: 1.688 inch
Venturii Size: 1.250 inch
Part Number: 0-80802HBX
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