SKU: 27490944330

650CFM Ultra XP Carburetor - 0-80802HBX

Sale price$607.48 Regular price$674.98
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Ships within 48 hours · Estimated delivery Jul 13 - Jul 18

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Description

650CFM Ultra XP Carburetor - 0-80802HBXOverview: 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 650
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 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
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: 27490944330

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Lovey
Belleville, US
★★★★★ 4
Almost perfect!
Color: Green
I'm going to be traveling for over 30 hours next week. I've had my eye on this bag for a few months and decided that it would be perfect for my bag I keep under the seat in front of me. I take as little onboard as possible. I check everything. This holds my 13" MacBook Air easily along with my makeup bag, regular purse junk with room left for a pile of snacks. It did have a strong odor when I took it out of the box but I've had it about a week and it seems to have disapated. I wish the handles were a little longer so I could throw it over my shoulder, I'm not someone who will use the strap. Straps and handles are just weird to me. There are tons of pockets though! Definitely a good purchase!
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Reviewed in the United States on March 26, 2026
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Karin Walford
New York, US
★★★★★ 5
Beautiful Large Purse
Color: Light Brown
5 STARS !! Love this purse. I have had expensive name brands and this I has been my favorite. Love the size, the hardware, the long strap, stong handles, the feet on the bottom the color is beautiful. Great quality so far 6 months. Even got sprinkled on in the rain dried no spots. The large is large so if you like large bags it is it. I have always wanted a I guess you would call it a medical bag. As you can tell from this I really love the bag
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Reviewed in the United States on April 10, 2026
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Cal
New York, US
★★★★★ 5
Great choice
Color: Light Brown
I probably lost a good 40 bags in a house fire and am just now able to begin to replace them. I made a good choice starting with Iswee! The quality and craftsmanship is top notch! Easy to get into and find items right away! The leather is soft and sturdy and the color is great! I would have rather the hardware be done in an antique finish rather than a shiny silver but it’s okay. I’m going to enjoy carrying this bag! Thank you
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Reviewed in the United States on May 17, 2026
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Bobbette Jamison Smith
Draper, US
★★★★★ 5
YOU MUST BUY!!
Color: Green, Color: Green
Hello, This is the first ever review that I’ve ever written. I couldn’t wait for this bag to arrive, and it came today as scheduled. It IS THE MOST - ABSOLUTELY BEAUTIFUL - as soon as I opened the packaging I could smell the leather! - the “colour” lol is RICH! I am a GREEN everything person, and this green is STUNNING! The QUALITY is great and appears to be VERY DURABLE. The inside is EXTREMELY roomy and deep, which is good for me because I’m lazy about zipping my purse up. BUT the zipper glides with ease. It’s a medium weight purse, so be aware of what you’re putting in there lol Value wise, it’s definitely worth the money and it looks MUCH MORE EXPENSIVE than it actually costs! I took the strap through and made it a shoulder strap also. I WILL definitely be buying the burgundy one next! Thank You ISWEE BOBBETTE
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Reviewed in the United States on January 4, 2026
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K H
Cuba, US
★★★★★ 5
Great Tote Bag
Color: Navy Blue
This a really nice bag! I can't wait to go on my trip. It is just the right size, not too big, not too small. It holds a lot of things and I can reach in and see all of it. I like that it has the shoulder strap that you can either keep on or take off. The leather is so soft and looks beautiful. Seems to be really well made and I will have it for a long time and plan on using it every time we travel.
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Reviewed in the United States on February 25, 2026

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