The Legacy of Performance Excellence
When it comes to high-performance carburetors, few names command the same level of respect and recognition as Demon Carburetor®. For decades, we’ve been at the forefront of fuel delivery innovation, crafting precision-engineered carburetors that transform ordinary engines into extraordinary powerhouses. Our commitment to excellence, attention to detail, and unwavering dedication to performance have made us the trusted choice for racing professionals, automotive enthusiasts, and weekend warriors alike.
At demoncarburetor.us, we don’t just sell carburetors—we deliver dreams of speed, power, and mechanical perfection. Every Demon Carburetor® 750, 650, 850, and 625 model represents countless hours of research, development, and real-world testing. These aren’t merely components; they’re the culmination of automotive passion translated into tangible performance gains.
Our Story: Born from a Passion for Performance
The Demon Carburetor® brand emerged from a simple yet powerful philosophy: performance enthusiasts deserve equipment that matches their ambition. In an era where fuel delivery can make or break a vehicle’s potential, we recognized the need for carburetors that could deliver consistent, reliable, and exceptional performance across a wide range of applications.
Our journey began with a team of engineers, racers, and automotive purists who understood that the carburetor isn’t just another part—it’s the heart of an engine’s breathing system. They spent countless hours on racetracks, in workshops, and at testing facilities, refining designs and pushing boundaries. The result? A line of carburetors that has become synonymous with quality, precision, and unbridled power.
From grassroots drag racing to professional motorsports, from street performance to all-out competition builds, Demon Carburetor® products have proven themselves time and again. Our reputation wasn’t built overnight; it was earned through consistent performance, innovative design, and an unwavering commitment to our customers’ success.
The Demon Difference: Engineering Excellence in Every CFM
Precision Manufacturing
What sets Demon Carburetor® apart from the competition? It starts with our manufacturing process. Every carburetor that leaves our facility undergoes rigorous quality control procedures. We don’t believe in “good enough”—we believe in perfection. Our high-performance carburetors are machined to exacting tolerances, assembled by skilled technicians, and tested to ensure they meet our stringent performance standards.
The bodies of our carburetors are crafted from high-grade aluminum, chosen specifically for its strength-to-weight ratio and heat dissipation properties. Every air horn, every venturi, every passage is designed with computational fluid dynamics in mind, ensuring optimal air and fuel mixing for maximum power output.
Innovation Through Technology
While we respect the traditional art of carburetor design, we’re not afraid to embrace modern technology. Our engineering team utilizes state-of-the-art computer modeling, flow bench testing, and dyno validation to refine our designs continually. This marriage of classic mechanical principles and cutting-edge technology allows us to create carburetors that deliver consistent performance across varying conditions.
The Demon Carburetor® 750, 650, 850, and 625 models each represent specific engineering solutions for different performance requirements. Whether you’re building a street machine that needs docile low-speed manners with explosive top-end power, or a dedicated race engine that demands maximum airflow, we have the perfect solution.
Product Line: Power for Every Application
The Demon Carburetor® 750: The Versatile Performer
Our 750 CFM carburetor has become a legend in its own right. This model represents the sweet spot for many performance applications, offering substantial airflow capacity without overwhelming smaller displacement engines. The 750 is the go-to choice for street/strip applications, muscle car restorations, and serious street performance builds.
What makes the 750 special? It’s the perfect balance of features and functionality. With its precisely calibrated jetting, responsive throttle linkage, and efficient fuel delivery system, this carburetor transforms engine response. Whether you’re launching from a stoplight or making a pass down the quarter-mile, the 750 delivers consistent, predictable power that you can feel in your seat.
The 750’s design incorporates features that enthusiasts demand: easily adjustable air/fuel mixture screws, replaceable air bleeds for fine-tuning, and a robust construction that withstands the rigors of high-performance use. It’s equally at home on a weekend cruiser or a bracket racing machine.
The Demon Carburetor® 650: Precision for Smaller Displacements
Not every engine needs massive airflow, and that’s where the 650 CFM carburetor shines. Designed for smaller displacement engines and applications where throttle response and drivability are paramount, the 650 delivers performance without compromise. This model is perfect for 302-350 cubic inch engines, particularly those used in street applications where low-end torque and crisp acceleration matter most.
The 650 features all the precision engineering of its larger siblings but in a package optimized for engines that don’t require massive CFM ratings. This carburetor proves that bigger isn’t always better—it’s about matching the right tool to the job. Street enthusiasts particularly appreciate the 650’s excellent fuel economy characteristics combined with its performance potential.
With the 650, we’ve focused on delivering smooth power delivery across the entire RPM range. The venturi sizing and throttle bore dimensions are specifically calculated to maintain high air velocity even at lower engine speeds, ensuring crisp throttle response and strong mid-range punch.
The Demon Carburetor® 850: Maximum Flow for Maximum Power
When serious power is the goal, the 850 CFM carburetor answers the call. This beast is designed for big-block engines, forced induction applications, and any situation where maximum airflow is essential. The 850 doesn’t just feed your engine—it unleashes its full potential.
Built to handle the demands of high-horsepower applications, the 850 features oversized throttle bores and venturis that minimize restriction while maintaining excellent signal strength. This carburetor is the choice of serious racers who understand that horsepower is made in the details. Every passage, every transition, every surface is optimized for flow efficiency.
The 850 isn’t just about raw numbers—though it certainly delivers those. It’s about providing reliable, consistent fuel delivery even under extreme conditions. Whether you’re making back-to-back dyno pulls or running consecutive passes at the drag strip, the 850 maintains its composure and continues delivering the air and fuel mixture your engine craves.
The Demon Carburetor® 625: Specialized Performance
The 625 CFM carburetor represents our commitment to serving specialized performance needs. This model occupies a unique position in our lineup, offering slightly less airflow than the 650 but with characteristics that make it ideal for specific applications. The 625 excels in situations where precise fuel metering and exceptional throttle response are critical.
Many enthusiasts choose the 625 for engines that fall into that perfect displacement range where a 650 might be slightly too much, but a smaller carburetor would leave power on the table. It’s particularly popular in circle track racing, where consistency and predictability trump peak horsepower numbers.
Engineering Philosophy: Performance Through Science
Airflow Dynamics
At the core of every Demon Carburetor® is an understanding of airflow dynamics. We recognize that a carburetor’s job is to atomize fuel and mix it with air in precise proportions. This seemingly simple task becomes incredibly complex when you consider the variables: engine speed, load, temperature, altitude, and countless other factors.
Our engineers spend significant time optimizing the internal geometry of each carburetor. The shape of the venturis, the angle of the boosters, the position of the discharge nozzles—every element is calculated to create the ideal air/fuel mixture. We use flow benches to validate our designs, ensuring that theoretical performance translates to real-world results.
The venturi design in our high-performance carburetors deserves special mention. We’ve refined these critical components to maximize air velocity while minimizing restriction. This creates a strong vacuum signal that pulls fuel from the metering system efficiently, resulting in excellent atomization and distribution.
Fuel Metering Precision
A carburetor is only as good as its ability to meter fuel accurately. Our metering systems incorporate high-quality components that ensure precise fuel delivery across all operating conditions. From the needle and seat assemblies that control fuel level to the jets that meter fuel flow, every component is manufactured to exacting specifications.
We understand that tuning is part of the performance equation. That’s why our carburetors feature easily accessible adjustment points. Air/fuel mixture screws allow quick tuning changes, while our interchangeable jet system makes it simple to dial in the perfect calibration for your specific application.
The float system in each Demon Carburetor® is designed for consistent fuel level maintenance, even under high g-force conditions. This ensures that whether you’re accelerating hard down the straight or cornering at the limit, your engine receives a steady supply of properly metered fuel.
Application Versatility: One Brand, Infinite Possibilities
Street Performance
For street enthusiasts, our Demon Carburetor® 750, 650, 850, and 625 models offer the perfect blend of performance and drivability. We understand that street cars need to start reliably, idle smoothly, and deliver crisp throttle response in traffic—all while having the capability to unleash serious power when the road opens up.
Our carburetors excel in street applications because we design them with real-world driving in mind. The transition from idle to main metering is smooth and progressive, eliminating the flat spots and stumbles that plague lesser carburetors. The choke systems (on equipped models) are designed for reliable cold starting, making your performance machine a viable daily driver.
Street performance builds benefit from our careful attention to fuel economy as well. While we’re known for power, we also understand that excessive fuel consumption diminishes the enjoyment of any street car. Our precise metering ensures that you’re not wasting fuel while cruising, saving that precious gasoline for when you really need to accelerate.
Drag Racing Excellence
The drag strip is where Demon Carburetor® products truly prove their worth. In an environment where thousandths of a second matter, where every horsepower counts, our carburetors deliver the consistent performance that racers demand. Whether you’re competing in bracket racing, heads-up classes, or just trying to set a personal best, our products give you the competitive edge.
Drag racers appreciate the instant throttle response our carburetors provide. When the tree drops and you mash the throttle, there’s no hesitation, no stumble—just immediate, aggressive power delivery. The accelerator pump circuits are calibrated to provide the perfect shot of fuel during launch, preventing bog while ensuring you don’t waste time spinning the tires.
Many professional drag racing teams choose Demon Carburetor® products because of their consistency. Round after round, pass after pass, our carburetors maintain their calibration and continue delivering repeatable performance. In a sport where consistency often beats peak numbers, this reliability is invaluable.
Circle Track and Road Racing
While drag racing gets much of the glory, our high-performance carburetors also excel in road racing and circle track applications. These disciplines present unique challenges: sustained high-speed operation, constant throttle transitions, and the lateral g-forces that can upset lesser fuel systems.
Our carburetors feature design elements specifically beneficial for these applications. The float systems resist fuel starvation during cornering, while the metering circuits deliver smooth, progressive power delivery through the corner exit. The throttle bores and venturis are sized to maintain excellent signal strength across the RPM range, ensuring consistent power whether you’re at minimum corner speed or maximum straightaway velocity.
Road racers particularly appreciate the tuning flexibility our carburetors offer. The ability to fine-tune fuel delivery for specific tracks, weather conditions, or tire compounds allows racers to optimize their setup for maximum performance.
Marine and Off-Road Applications
Performance isn’t limited to paved surfaces, and neither are our carburetors. Marine enthusiasts and off-road racers face unique challenges—exposure to harsh environments, sustained wide-open-throttle operation, and the need for absolute reliability in remote locations.
The robust construction of Demon Carburetor® 750, 650, 850, and 625 models makes them suitable for these demanding applications. The corrosion-resistant materials and durable finishes withstand exposure to water, dust, and debris. The internal components are designed for longevity, even under the constant high-load operation common in marine and off-road use.
Technical Excellence: The Details That Matter
Quality Components
Every component in a Demon Carburetor® is selected for performance and durability. We don’t cut corners or use inferior materials. The throttle shafts are precision-ground and supported by quality bearings, ensuring smooth operation and long life. The throttle plates are carefully fitted to minimize air leaks while allowing free movement.
Our needle and seat assemblies use high-quality materials that resist wear and maintain precise fuel level control. The jets are manufactured to exacting specifications, ensuring that the numbers stamped on them accurately reflect their flow characteristics. Even seemingly minor components like gaskets and O-rings are sourced from quality suppliers.
The baseplate and main body castings are carefully designed to eliminate restrictions and promote smooth airflow. We pay attention to details like the smoothness of internal surfaces, the radius of transitions, and the alignment of passages. These details, while invisible to the casual observer, make a significant difference in performance.
Finish Quality
A high-performance carburetor should look as good as it performs. Our finish quality reflects our commitment to excellence. Whether it’s the classic dichromate finish, a polished aluminum look, or a special coating, every Demon Carburetor® looks stunning under the hood.
We understand that enthusiasts take pride in their engine compartments. A beautifully finished carburetor contributes to the overall aesthetic of a performance build. Our attention to cosmetic detail doesn’t come at the expense of performance—it’s simply another way we demonstrate our commitment to quality.
Tuning and Support: Empowering Our Customers
Comprehensive Documentation
We believe that our customers should understand their carburetors. That’s why we provide comprehensive documentation with every product. Our tuning guides explain how to adjust mixture screws, change jets, and optimize performance for specific applications. We don’t believe in secrets—we want our customers to get the maximum performance from their investment.
The documentation we provide goes beyond basic installation instructions. We explain the theory behind carburetor operation, helping enthusiasts understand what’s happening inside their carburetor. This knowledge empowers them to make informed tuning decisions and diagnose any issues that might arise.
Extensive Parts Support
A carburetor is a tunable device, and we support that tunability with an extensive parts catalog. Need different jets? We have them. Want to try alternative power valves? We stock them. Looking for rebuild kits or replacement components? They’re available.
Our parts support extends beyond just offering components—we provide guidance on what parts to use for different applications. Our technical resources help customers select the right components for their specific needs, whether they’re building a mild street cruiser or an all-out race engine.
Technical Assistance
While we design our carburetors to be user-friendly, we recognize that questions arise. Our technical support team consists of knowledgeable enthusiasts who understand both the theory and practice of carburetor tuning. They’re available to help customers troubleshoot issues, optimize performance, or simply understand how to get the most from their Demon Carburetor®.
We don’t believe in leaving customers to figure things out on their own. Whether you’re a seasoned engine builder or a first-time carburetor installer, we’re here to help ensure your success. Your success is our success, and we take that relationship seriously.
Innovation and Development: Never Standing Still
Continuous Improvement
The automotive performance industry never stops evolving, and neither do we. Our engineering team continuously works on improvements to our product line. We listen to customer feedback, analyze performance data, and stay current with industry trends. This commitment to continuous improvement ensures that Demon Carburetor® 750, 650, 850, and 625 models remain at the forefront of performance technology.
We conduct regular testing sessions, both on the dyno and in real-world applications. This testing isn’t just about validating existing products—it’s about discovering opportunities for improvement. Sometimes a small change in a passage dimension or a refinement in a circuit can yield noticeable performance gains. We pursue these improvements relentlessly.
Embracing New Technologies
While carburetor technology has a long history, there’s always room for innovation. We embrace new manufacturing technologies that allow us to create better products. Computer-aided design and advanced machining capabilities enable us to achieve tolerances and surface finishes that weren’t possible in earlier eras.
We also utilize modern testing equipment to validate our designs. Computational fluid dynamics software allows us to visualize airflow through our carburetors before we even build a prototype. Flow benches with sophisticated data acquisition systems provide detailed performance metrics. Dyno testing with wide-band oxygen sensors and sophisticated data logging helps us optimize calibrations.
Our Commitment: Performance You Can Trust
Quality Assurance
Every Demon Carburetor® that leaves our facility has passed rigorous quality control checks. We don’t just spot-check—we verify critical dimensions and functions on every unit. This commitment to quality assurance means that when you receive a Demon Carburetor®, you can install it with confidence, knowing it will perform as intended.
Our quality standards extend beyond just the manufacturing process. We carefully select our suppliers, ensuring that components we don’t manufacture in-house meet our exacting standards. We maintain relationships with suppliers who share our commitment to quality and who understand the performance industry’s demands.
Standing Behind Our Products
We stand behind every high-performance carburetor we sell. Our warranty reflects our confidence in our products and our commitment to customer satisfaction. If there’s a manufacturing defect, we’ll make it right. This isn’t just good business—it’s the right thing to do.
But our commitment goes beyond formal warranties. We want every customer to be thrilled with their Demon Carburetor®. If someone isn’t satisfied, we want to know why and how we can improve. This feedback loop helps us maintain the highest standards and ensures that we’re meeting the needs of the performance community.
The Community: More Than Just Products
Supporting Motorsports
We’re proud to support grassroots motorsports. From local drag strips to regional racing series, Demon Carburetor® products are there, helping racers chase their dreams. We understand that professional racers often started as weekend warriors, and we’re committed to supporting enthusiasts at all levels.
Our involvement in motorsports isn’t just about marketing—it’s about staying connected to the people who use our products. The feedback we receive from racers helps us improve our offerings and ensures we’re meeting the real-world needs of the performance community.
Educational Outreach
We believe in educating the next generation of automotive enthusiasts. Through our website, social media channels, and partnerships with automotive education programs, we share knowledge about carburetor technology, tuning principles, and performance theory. We want to help enthusiasts understand not just what works, but why it works.
This educational mission extends to our technical resources. We publish articles, create videos, and provide detailed information that helps enthusiasts make informed decisions. An educated customer is an empowered customer, and empowered customers build better cars.
Looking Forward: The Future of Performance
Adapting to Change
The automotive world is changing rapidly, but the demand for performance remains constant. While electronic fuel injection dominates modern production vehicles, the carburetor remains relevant in performance applications, especially in vintage vehicles, racing applications, and situations where simplicity and tunability are valued.
We’re committed to remaining relevant as the industry evolves. This means continuing to refine our products, exploring new materials and manufacturing techniques, and staying attuned to the needs of our customer base. The Demon Carburetor® 750, 650, 850, and 625 models of tomorrow will build on the legacy of today’s products while incorporating improvements that push performance boundaries.
Maintaining the Tradition
Despite technological advances, there’s something special about a well-tuned carburetor. The mechanical simplicity, the tunability, the direct connection between driver input and engine response—these qualities ensure that carburetors will remain relevant for enthusiasts who value the pure, unfiltered driving experience.
We’re committed to maintaining the tradition of carburetor excellence. As long as there are enthusiasts who value performance, simplicity, and the satisfaction of tuning their own engines, there will be a place for Demon Carburetor® products.
Join the Demon Family
When you choose a Demon Carburetor®, you’re not just buying a component—you’re joining a community of enthusiasts who demand excellence. You’re aligning yourself with a brand that has earned its reputation through consistent performance and unwavering quality.
At demoncarburetor.us, we’re more than just a website—we’re your partner in performance. Whether you’re building your first performance engine or you’re a seasoned racer looking for that extra edge, we have the products, knowledge, and support to help you succeed.
Experience the Demon Difference
The difference between a good engine and a great engine often comes down to the details. The carburetor, as the heart of the fuel delivery system, represents one of those critical details. With Demon Carburetor® 750, 650, 850, and 625 models, you’re choosing components that have been engineered, tested, and proven in the most demanding applications.
Our high-performance carburetors represent the culmination of decades of experience, countless hours of development, and an unwavering commitment to excellence. They’re not the cheapest option on the market—they’re the best option. We believe that true enthusiasts recognize the value of quality and performance, and they’re willing to invest in components that deliver results.
Visit demoncarburetor.us today to explore our complete product line, access technical resources, and discover why serious enthusiasts choose Demon Carburetor®. Whether you need a 750 for your street/strip muscle car, a 650 for your vintage performance build, an 850 for your big-block monster, or a 625 for specialized applications, we have the perfect solution.
Conclusion: Performance Without Compromise
In a world where compromises are common, Demon Carburetor® stands as a testament to what’s possible when you refuse to settle. Our products don’t compromise performance for economy, quality for cost, or innovation for tradition. They deliver everything that serious enthusiasts demand: power, reliability, tunability, and the satisfaction that comes from using the best.
Every time you hit the throttle with a Demon Carburetor® feeding your engine, you’re experiencing the result of our passion for performance. You’re benefiting from our engineering expertise, our manufacturing excellence, and our commitment to your success. This is what separates Demon Carburetor® from the competition—we don’t just make carburetors, we enable dreams.
Thank you for considering Demon Carburetor® for your performance needs. We look forward to being part of your automotive journey, whether you’re chasing lap times, quarter-mile records, or simply the pure joy of a perfectly tuned engine. Welcome to the family. Welcome to performance without compromise. Welcome to Demon Carburetor®.