SKU: 82013812639

750CFM Ultra XP Carburetor - 0-80803HBX

Sale price$607.48 Regular price$674.98
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Ships within 48 hours · Estimated delivery Jul 16 - Jul 21

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Description

750CFM Ultra XP Carburetor - 0-80803HBXOverview: 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

Overview:

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
  • 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
  • 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 progressivesecondary throttle actuation for ultimate control of secondary opening rate
  • Baseplate designed with a boss that can be consumer machined for vacuum source
  • Includes notched float and jet extensions
  • 100% wet-flow tested by Holley technicians to assure it arrives ready to run!

 

Application:

Year Make Model Submodel Engine Size
Universal

 

Specs:

Barrels 4
Billet Color Hard Core Gray with Black
Booster Down Leg
Brand Holley
Carburetor Use Professional Race
CFM 750
Choke None
Circuit 2
Condition New
Emission Code 3
Finish Hard Core Gray
Fuel Gasoline
Fuel Inlet Dual
Marine Use No
Material Aluminum
Model 4150
Primary Main Jet 76
Primary Power Valve 6.5
Primary Pump Nozzle Size 32
Product Type Ultra XP Carburetor
Secondaries Mechanical
Secondary Main Jet 76
Secondary Pump Nozzle Size 32
Supercharged Application No
Throttle Bore 1.688 inch
Venturii Size 1.376 inch
Warning California Proposition 65
Warranty Limited 90 Day
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 82013812639

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Kindle Customer
Lake Worth, US
★★★★★ 5
Fantastic
Size: Ultra Slim (2.75-Inch Height), Color: Blue
This pillow is very soft and comfortable, and the cool side of the pillowcase works wonderfully.
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Reviewed in the United States on May 25, 2026
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Christopher Watson
Grantham, US
★★★★★ 5
Great and ubex
Size: Ultra Slim (2.75-Inch Height), Color: Blue
Wonderful product. Light and very comfortable. I use it to support my bad back and it has helped a great deal.
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Reviewed in the United States on May 30, 2026
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Lisa A
Boise, US
★★★★★ 3
Thin but dense
Size: Ultra Slim (2.75-Inch Height), Color: Blue
i like the thin size but it's very dense -- if you like that. i prefer more fluff/air
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Reviewed in the United States on March 21, 2026
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Katerina W.
Battle Creek, US
★★★★★ 5
Perfect Pillow!
Size: Ultra Slim (2.75-Inch Height), Color: Blue
I have spent so much money trying to find the right pillow. As a side sleeper I would always wake up with a stiff neck but not with this pillow! It’s a perfect height and the pillow stays fairly cool. It’s totally my Goldilocks pillow!❤️
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Reviewed in the United States on May 29, 2026
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linda earthsong
Lowell, US
★★★★★ 5
Great!
This SUPA MODERN Reading Pillow is absolutely what I have been searching for. I added a thick mattress topper to my twin bed and suddenly the wedge pillow I had was below the top of the mattress so I needed something else to put against the rails at the head. This reading pillow is almost exactly the same width as this standard twin. The pillow was shipped vacuum packed and looked so lumpy I was fearful it would never be comfortable but I followed the instructions and left it alone except for an occasional shake to fluff it for 72 hours. As often as I get stuff that’s vacuum packed I was still amazed by how this turned out. It’s very full and firm I’m sure some folks will like that you can remove some of the filler to soften it but I find it very comfortable as is. The shape does give it a little more lumbar support than similar pillows I have had in the past. The fabric cover is super soft but has yet to make me overheat. It does have pockets on the arms but they’re not very big I wouldn’t put much in there I was worried about falling. This is not the cheapest reading pillow but it’s far and away not the most expensive. As I was writing this review I saw that it has been marked down 20% PLUS there’s a 30% off coupon. That puts it down around the cheapest price point for a far superior pillow. Go get one NOW!!! I highly recommend this Reading Pillow!
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Reviewed in the United States on November 30, 2024

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