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Ships within 48 hours · Estimated delivery Jul 9 - Jul 14
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Description
950CFM Ultra XP Carburetor - 0-80805HBXOverview: 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
- 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 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 | 950 |
| 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 | 92 |
| Primary Power Valve | 4.5 |
| Primary Pump Nozzle Size | 32 |
| Product Type | Ultra XP Carburetor |
| Secondaries | Mechanical |
| Secondary Main Jet | 92 |
| Secondary Power Valve | 4.5 |
| Secondary Pump Nozzle Size | 32 |
| Supercharged Application | No |
| Throttle Bore | 1.750 inch |
| Venturii Size | 1.600 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:
- 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
4.8 ★★★★★
Based on 166 reviews
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Product Reviews
★★★★★ 5
Joy restored!
Format: Paperback
Now, to be honest, I've been a John & Stasi Eldredge reader for a long time. I love their books and their writing styles. But more than their skills with language is their transparency and candor. If you get the chance to meet them, you'll see that who they are in person is just how they portray themselves in their books. They're honest. They're kind--both with themselves and with others and they're consistently dedicated to telling the truth--no hype. No bait and switch.
Now, to Defiant Joy. This is a book for those who have lost joy. This is a book for those who have been blinded to the subtle creep of disappointment and cynicism that has tragically become the filter through which they see life. Let's be honest. Life can really suck sometimes. And it's both understandable and inevitable that joy is harder and harder to find...much less experience. Stasi has lived enough life to understand that condition. She shares her own struggles and disappointments--all of which give her credibility when she invites her readers to consider seeking joy in the midst of less than joyful circumstances.
"Defiant Joy" is a fitting title for those who don't want to give up yet; who don't want to give in to resignation. And that's the invitation Stasi gently offers--there is another option beside resignation, cynicism, depression and disillusionment. Joy! Who would have thought?
Stasi writes like she talks. Reading her work is like sitting down with a good friend for an honest and frank conversation about what really matters. She's the kind of friend we all long to have--one who tells us what we need to hear instead of what we want to hear; one who tells us the truth, even when we've lost hope of ever finding it. You won't find any relativism or warm-fuzzy self-talk. This is not a self-help book. Stasi has suffered too much to offer simplistic answers to some of the most difficult questions.
I highly recommend this book. It's on my suggested reading list for the community I lead. Stasi is one battle-experienced traveler who's offering other weary travelers hope for the journey ahead. I'll bet money you'll discover joy again.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 18, 2019
★★★★★ 5
You can experience joy!
Format: Paperback, Format: Paperback
What is joy? How does it compare to happiness? From where does joy come? How can we experience joy every day despite the pain and sorrow that we all experience?
Stasi Eldredge writes honestly and poignantly from places of pain and sorrow in her own life - but doesn't leave us there. She leads us into hope, into beauty and into a new depth of life in God. She teaches us how to cultivate joy in really practical - and achievable - ways.
I was especially struck by her walking through St. Patrick's Breastplate - an ancient prayer - and how I can turn from a place of failure and shame based on my performance to the King and His character and hide myself in Him.
"I need mercy, and I know it. In that knowing comes a great gift. I turn my heart again to my kind and understanding God and confess to Him that I need mercy. His answer swamps my heart with a too-good-to-be-true reality that leads to a crumbling of hopelessness and shame. My self-loathing collapses into His love. My self-condemnation melts into His arms that welcome and soothe. I have blown it. The blowing now has become the wind of the Holy Spirit. Ruah is here. His breath shepherds my heart into my Father's, and there mercy triumphs over judgment."
I encourage you to read this book. God will use it to restore your soul, to bring water to your dry and weary soul, and to help you find rest in His strong arms. You will not feel condemned, but encouraged. I found hope in its pages.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 17, 2018
★★★★★ 5
Good
Format: Paperback
Good
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 15, 2026
★★★★★ 4
Excellent, inspirational, challenging
Format: Kindle
Stasi doesn't just support her vision that God wants us live joyously with scripture, she acknowledges the challenges to that, the pain we experience in life, and then gives us practical advice for applying God's love through those times to become deeper, better, more loving individuals on the other side. I wish I had read this book before my Daddy was called home, but I guess I wouldn't have been the same person if I hadn't experienced that pain alone. Defiant Joy leads you beyond surface Christianity and challenges you to see God more closely.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on July 18, 2019
★★★★★ 5
Love itttt
Format: Paperback
Such a great book! Everyone should read it
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 5, 2025
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