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Ships within 48 hours · Estimated delivery Jul 12 - Jul 17
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Description
4150 600Cfm Xp Alum Dp Sc W Black Billet-0-80575SABy popular demand, Holley is expanding the draw thru supercharger carburetor line to now include the XP series. Like the existing HP line, these are available in 600, 750, and 950 CFM flow rates and standard polished with black accents. The feature laden XP includes a contoured venturi inlet for balanced air flow, screw in air bleeds for precision tuning capabilities, high flow billet metering blocks, billet base plate, and Dominator style fuel bowls
By popular demand, Holley is expanding the draw-thru supercharger carburetor line to now include the XP series. Like the existing HP line, these are available in 600, 750, and 950 CFM flow rates and standard polished with black accents. The feature-laden XP includes a contoured venturi inlet for balanced air flow, screw in air bleeds for precision tuning capabilities, high flow billet metering blocks, billet base plate, and Dominator style fuel bowls which allow plumbing from either side. Supercharger XP carburetors also have a unique capability that allows their power valves to reference the intake manifold vacuum below the supercharger. This allows the power valve to operate as it should, based off intake manifold vacuum. A power valve provides further enrichment to the main metering system under load (low vacuum) conditions. Holley XP carburetors are the standard for square bore race carburetors. Race-Ready out of the box!
Features:
- Tumble polished shiny finish for good looks
- Chevrolet small block 2x4, 671 blower calibration
- Contoured venturri inlet offers balanced airflow for increased horsepower
- Screw in air bleeds for precision tuning capabilities
- Dual 50cc accelerator pumps for additional fuel under initial acceleration
- Dual feed fuel inlets for constant high volume fuel delivery
- 4 corner idle allows you to precisely control your idle system
- Mechanical Secondaries for perfect off the line launches
- Boost referenced power valve for proper enrichment under acceleration
- Throttle lever cut off for clearance on a sideways application
- 100% wet-flow tested by Holley technicians to assure it arrives ready to run!
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4.7 ★★★★★
Based on 581 reviews
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Product Reviews
★★★★★ 5
More Secrets to Healthy Child Rearing in These Times by Dr. Borba!
Format: Hardcover, Format: Hardcover
Thrivers by Dr. Michelle Borba is a must have book. As a practicing licensed psychotherapist, this book is a must have for working with families and children to integrate into sessions. Dr. Borba has perfected the art of simplifying the complexity of child rearing into steps and formulas for the best outcomes and challenging behaviors. If you are a parent/guardian, grandparent, work with children/adolescents/families or have kids you love in your life, order Thrivers to increase your skill and education. You won't be sorry you did.
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Reviewed in the United States on April 21, 2021
★★★★★ 5
Insightful, wise and practical!
Format: Hardcover
A highly readable mix of practical strategies, engaging anecdotes and research-based insights, Thrivers underscores the importance of our kids' innate character strengths for their success and happiness. I found this book perfectly timed, given all the pandemic-related stress our teens have had on top of everything else! Borba’s advice on recognizing and nurturing what really matters makes this book a parenting must-have (and I’ve read plenty of them).
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Reviewed in the United States on March 23, 2021
★★★★★ 3
Helpful pinpointing which traits to focus on
Format: Hardcover
I loved the format of the book, how are you take a diagnostic test and then read the sections that pertain to the character traits that you want to strengthen in your child. But when I read the chapters, I was disappointed. I was hoping for new information. If I had never read a book on how to support my child’s development and education, I would have been delighted.
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Reviewed in the United States on June 24, 2021
★★★★★ 5
Great Tool
Format: Cards
My kid loves practicing her Spanish sounds and learning new animal names with these cards. I like the phonetic sounds sheet as well
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Reviewed in the United States on January 5, 2026
★★★★★ 5
impressed with the quality and design
Format: Cards
much sturdier and better made than other flash cards we've tried. our son loves the size and reaches for these to play with frequently. nice to have a thicker box for bringing them with us to restaurants / travel that doesn't get ripped on the first usage.
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Reviewed in the United States on July 24, 2025