This carburetor was designed with a dual mounting pattern, so that it can be installed on a manifold machined for a 4150 or 4500 series carburetor.
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 Methanol specific calibration 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 50cc 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 .150" stainless needle & seats to control the demand of E-85 4 corner idle allows you to precisely control your idle system Mechanical Secondaries for perfect off the line launches 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 and secondary curb idle screws allow for easy idle adjustment without the use of tools Primary throttle shaft capped to prevent entry of debris & contaminates Throttle shaft is slabbed and undercut for improved airflow 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 Stainless steel adjustable secondary link. Provides choice of 1:1 or progressive secondary throttle actuation for ultimate control of secondary opening rate Baseplate designed with a boss that can be consumer machined for vacuum source Stainless steel throttle plates 100% wet-flow tested by Holley technicians to assure it arrives ready to run!Product Description:
Carburetor Ultra XP 4-Barrel 750 CFM Holley Flange No Choke Dual Inlet Black Anodized Methanol Sold IndividuallyFor over a century Holley has driven the cutting edge of fuel-system design. That work continues today through Holley’s market-leading EFI products as well as through Holley’s family of best-in-industry brands. Top brands like MSD, Flowmaster, Hurst, Accel, and many more make up the industry’s leading offering of enthusiast-driven products to deliver robust, complete performance solutions for builders, racers, and drivers. From propelling the LS-, Coyote-, and Gen 3 Hemi-swap trends, to continuously innovating late-model and vintage vehicle performance, Holley’s commitment to its customers and their cars is at the core of everything we do.
