{"product_id":"0-80835hbx-1","title":"Holley 950 CFM 4150 ALUM ULTRA XP (Hard Core Gray™) METHANOL","description":"\u003cdiv class=\"billy_features_content\"\u003e\n  \u003ch3\u003eOverview\u003c\/h3\u003e\n  \u003cdiv\u003e\n    \u003cp\u003eXtreme 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!\u003c\/p\u003e\n    \u003cp class=\"mt-2\"\u003eMechanical Secondary Calibrated for Methanol-4150\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003chr\u003e\n  \u003ch3\u003eFeatures\u003c\/h3\u003e\n  \u003cdiv\u003e\n    \u003cul\u003e\n      \u003cli\u003eAluminum Construction (saves 4.5 lbs - 38% weight savings)\u003c\/li\u003e\n      \u003cli\u003eHard Core Gray with black anodized billet aluminum metering block and booster inserts\u003c\/li\u003e\n      \u003cli\u003eDesigned for use on Drag race, circle track, or any high horsepower engines\u003c\/li\u003e\n      \u003cli\u003eMethanol specific calibration\u003c\/li\u003e\n      \u003cli\u003eContoured venturri inlet offers balanced airflow for increased horsepower\u003c\/li\u003e\n      \u003cli\u003eAir bleeds moved outward to allow a smoother transition of airflow from the top of the carburetor into the venturii\u003c\/li\u003e\n      \u003cli\u003eMetering blocks feature improved durability, true gasket sealing and fully adjustable (emulsion bleeds, power valve channel restrictors \u0026amp; idle feed restrictors)\u003c\/li\u003e\n      \u003cli\u003eIntegrated 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.\u003c\/li\u003e\n      \u003cli\u003eHelps maintain good idle control when using radical camshafts.\u003c\/li\u003e\n      \u003cli\u003eDual 50cc accelerator pumps provide the perfect amount of fuel from idle to full throttle\u003c\/li\u003e\n      \u003cli\u003eFuel bowls provide 20% more fuel capacity while controlling slosh with internal baffling\u003c\/li\u003e\n      \u003cli\u003eClear sight windows on both sides of bowls for easy and safe fuel level adjustments\u003c\/li\u003e\n      \u003cli\u003eBuilt in drain plug in front center of bowl provides easy access to empty contents of bowl\u003c\/li\u003e\n      \u003cli\u003e8AN (o-ringed) inlet threads offer a large variety of plumbing options and can be plumbed from either side\u003c\/li\u003e\n      \u003cli\u003e.150\" stainless needle \u0026amp; seats to control the demand of E-85\u003c\/li\u003e\n      \u003cli\u003e4 corner idle allows you to precisely control your idle system\u003c\/li\u003e\n      \u003cli\u003eMechanical Secondaries for perfect off the line launches\u003c\/li\u003e\n      \u003cli\u003eElongated (dual pattern) mounting holes allow fitment on intakes with square flange (Holley 4150™ style) or large flange (Holley Dominator® style)\u003c\/li\u003e\n      \u003cli\u003eKnurled (hand adjustable) primary and secondary curb idle screws allow for easy idle adjustment without the use of tools\u003c\/li\u003e\n      \u003cli\u003ePrimary throttle shaft capped to prevent entry of debris \u0026amp; contaminates\u003c\/li\u003e\n      \u003cli\u003eThrottle shaft is slabbed and undercut for improved airflow\u003c\/li\u003e\n      \u003cli\u003eFactory 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\u003c\/li\u003e\n      \u003cli\u003eStainless steel adjustable secondary link. Provides choice of 1:1 or progressive secondary throttle actuation for ultimate control of secondary opening rate\u003c\/li\u003e\n      \u003cli\u003eBaseplate designed with a boss that can be consumer machined for vacuum source\u003c\/li\u003e\n      \u003cli\u003eStainless steel throttle plates\u003c\/li\u003e\n      \u003cli\u003eIncludes notched float and jet extensions\u003c\/li\u003e\n      \u003cli\u003e100% wet-flow tested by Holley technicians to assure it arrives ready to run!\u003c\/li\u003e\n    \u003c\/ul\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e","brand":"Holley","offers":[{"title":"Default Title","offer_id":53094424674598,"sku":"0-80835HBX","price":1096.15,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0741\/1666\/1542\/files\/0-80835hbx.jpg?v=1777046044","url":"https:\/\/billysspeedshop.com\/fr\/products\/0-80835hbx-1","provider":"Billys Speed Shop","version":"1.0","type":"link"}