Supercharger Carburetor Size Calculator

Selecting the right carburetor size for a supercharged engine depends on factors like engine size, desired horsepower, and supercharger type. Generally, for moderate supercharged setups, a 750-850 CFM carburetor is suitable, while higher horsepower applications may require 950 CFM or larger. Consult with experts for precise sizing.

Supercharger Carburetor Size	Estimated Horsepower Range
600 CFM	Up to 350 HP
750 CFM	350 – 500 HP
850 CFM	500 – 650 HP
950 CFM	650 – 800 HP
1050 CFM	800 – 1000 HP
1150 CFM	1000+ HP

FAQs

How much horsepower will a 750 CFM carb support? A 750 CFM (cubic feet per minute) carburetor can typically support around 300-450 horsepower in a naturally aspirated engine, depending on various factors like engine efficiency, camshaft profile, and intake design.

How do I know what size carburetor I need? The size of the carburetor you need depends on your engine’s displacement, RPM range, and intended use. A rough estimate is to choose a carburetor that has a CFM rating close to 1.5 times your engine’s cubic inch displacement.

Do I need a special carburetor for a supercharger? For a supercharged engine, you often need a carburetor that’s specifically designed for forced induction applications. It should have provisions for boosting fuel delivery to match the increased air provided by the supercharger.

Is 600 CFM carb big enough? A 600 CFM carburetor is typically sufficient for engines producing 250-350 horsepower in naturally aspirated applications.

How many CFM do I need for 500 hp? For 500 horsepower, you’d generally want a carburetor with a CFM rating between 750 and 850.

Is 600 CFM carb big enough for a 350? Yes, a 600 CFM carburetor can work well for a 350 cubic inch engine, assuming it’s not heavily modified and falls within the 250-350 horsepower range.

What happens if the carburetor is too big? If the carburetor is too large for your engine, it can lead to poor low-end throttle response, decreased fuel efficiency, and potentially excessive fuel enrichment at idle and part-throttle, causing a rich condition.

Does a bigger carburetor mean more power? Not necessarily. A larger carburetor can provide more airflow, which may be beneficial for higher horsepower engines, but it won’t automatically result in more power. Proper matching of the carburetor to the engine’s needs is crucial.

Does a bigger carburetor mean more horsepower? Not directly. While a larger carburetor can support higher horsepower, other factors like engine components, camshaft, and exhaust also play a significant role in horsepower gains.

Can you just bolt on a supercharger? Adding a supercharger typically involves more than just bolting it on. You’ll need to modify various aspects of your engine, including the fuel and ignition systems, to accommodate the increased airflow and pressure.

Can you run a supercharger on a stock engine? You can run a supercharger on a stock engine, but it’s recommended to reinforce the internals, upgrade the fuel system, and ensure proper tuning to avoid engine damage and maximize performance.

What happens if you put a supercharger on a stock engine? Putting a supercharger on a stock engine without proper modifications and tuning can lead to engine damage due to increased stress and heat. It may also result in suboptimal performance gains.

Is 900 CFM too much? A 900 CFM carburetor is suitable for engines producing around 400-600 horsepower, depending on the engine’s characteristics and usage.

Is 1000 CFM too much? A 1000 CFM carburetor is typically used for engines producing 500-700+ horsepower, so it might be too much for lower-powered engines.

What happens if carb jets are too big? If carburetor jets are too big, it can result in a rich air-fuel mixture, leading to poor performance, fouled spark plugs, and reduced fuel efficiency.

How many CFM do I need to cool a V8? Cooling a V8 engine is not determined by CFM rating but by the capacity and efficiency of the cooling system (radiator, fan, water pump, etc.). CFM is relevant for carburetors, not cooling.

Is 5000 CFM a lot? 5000 CFM is a substantial airflow rating and would be suitable for large industrial applications, not automotive carburetors.

Is 6000 CFM a lot? 6000 CFM is also a very high airflow rating, well beyond what would be used in most automotive applications.

How many CFM is a Holley 600? A Holley 600 carburetor typically has a CFM rating of 600 cubic feet per minute.

Is higher CFM better for carburetor? A higher CFM can be beneficial for engines with higher horsepower levels, but it’s important to match the CFM rating to the engine’s requirements for optimal performance.

How many CFM is a 1405 Edelbrock carburetor? The Edelbrock 1405 carburetor has a CFM rating of 600 cubic feet per minute.

How do I know if my carburetor is too much air? If your engine runs too lean (too much air), you may experience symptoms like overheating, poor performance, backfires, and potentially engine damage. Proper tuning is essential.

Can a carburetor get too much air? Yes, a carburetor can deliver too much air if it’s oversized for the engine, leading to a lean condition.

How do I adjust my carburetor to get more power? To optimize your carburetor for more power, you may need to adjust air-fuel mixture, idle speed, and timing, as well as consider jetting changes and potentially a larger carburetor, depending on your engine’s needs.

Why use a double pumper carb? Double pumper carburetors provide an extra fuel shot when the throttle is quickly opened, improving throttle response in high-performance applications.

Do carburetors make more power than fuel injection? Carburetors and fuel injection systems can both make substantial power, but fuel injection is often more precise and efficient, especially in modern engines.

Does a 4-barrel carburetor add horsepower? A 4-barrel carburetor can contribute to increased horsepower, but it’s just one component of the engine’s overall performance. Other factors like intake manifold, camshaft, and exhaust also play crucial roles.

Do carb spacers add HP? Carburetor spacers can have a small impact on performance by altering the intake airflow dynamics. However, their effect on horsepower is typically minimal, often within a few horsepower.

How much HP does a bigger intake add? The horsepower gain from a larger intake manifold depends on the engine’s specific configuration. It can range from a few to several horsepower.

Are carburetors better for racing? Carburetors have been used in racing for decades and can be suitable for many applications. However, modern racing often utilizes fuel injection for precise control and performance advantages.

Does more air mean more horsepower? More air can contribute to more horsepower, but it must be balanced with the appropriate fuel mixture and other engine modifications.

Does the carburetor affect top speed? The carburetor’s size and tuning can impact top speed to some extent, but it’s not the only factor. Gear ratios, aerodynamics, and engine power are also crucial.

Does the carburetor affect acceleration? Yes, the carburetor’s tuning and size can significantly affect acceleration by controlling the air-fuel mixture and throttle response.

What is the downside of a supercharger? The downsides of a supercharger include increased heat generation, potential engine stress, and the need for additional modifications, along with increased fuel consumption.

How do I prepare my engine for a supercharger? Preparing your engine for a supercharger involves reinforcing internal components, upgrading the fuel and ignition systems, and ensuring proper tuning.

What to upgrade when adding a supercharger? When adding a supercharger, you may need to upgrade the pistons, connecting rods, crankshaft, fuel injectors, fuel pump, cooling system, and exhaust, among other components.

Can you run pump gas with a supercharger? You can run a supercharged engine on pump gas, but it requires proper tuning and possibly lower compression ratios to prevent detonation.

Can a stock transmission handle a supercharger? In some cases, a stock transmission can handle a supercharged engine, but it depends on the transmission’s strength and the level of power being produced. Upgrades may be needed for higher-powered setups.

How much HP does it take to spin a top fuel supercharger? Top Fuel superchargers can consume around 800-1,000 horsepower or more from the engine to drive the blower itself.

What can damage a supercharger? Damage to a supercharger can occur from excessive heat, overboosting, foreign object ingestion, or insufficient lubrication.

Do superchargers take away HP? Superchargers themselves do not take away horsepower; they are designed to increase it. However, the increased load on the engine can affect overall efficiency.

Can I run a supercharger without a tune? Running a supercharger without proper tuning can lead to engine damage, poor performance, and unsafe conditions. Tuning is essential when adding forced induction.

What is better, an 80 CFM or a 110 CFM? The choice between an 80 CFM and 110 CFM depends on your specific application and airflow requirements. Neither is inherently better; it depends on the context.

How many CFM carb do I need? The CFM carburetor you need depends on your engine’s size, type, and power output. A general rule of thumb is to aim for a CFM rating around 1.5 times your engine’s displacement for optimal performance.

Is 7000 CFM good? 7000 CFM is an extremely high airflow rating and is typically not used in automotive applications.

How strong is 1200 CFM? 1200 CFM is a very high airflow rating and would be suitable for specialized industrial or commercial purposes.

Is higher CFM louder? The CFM rating of a carburetor or blower does not directly correlate with noise level. Noise is influenced by many factors, including the engine’s design and exhaust system.

Do you want higher or lower CFM? The desired CFM depends on your engine’s specific requirements. Higher CFM may be necessary for high-performance applications, while lower CFM can be suitable for everyday driving.

Does a supercharger add value? Adding a supercharger can add value to a car for enthusiasts seeking increased performance. However, its impact on resale value may vary.

Can a car have both a turbo and a supercharger? Yes, some high-performance setups feature both a turbocharger and a supercharger (twin-charging) to maximize power output. This is typically found in specialized applications.

What happens if a supercharger is too small? A supercharger that’s too small for an engine may not provide enough airflow, limiting potential power gains.

Is 8000 CFM good? 8000 CFM is an exceptionally high airflow rating and is not commonly used in automotive applications.

How powerful is 900 CFM? A 900 CFM carburetor can support engines in the range of approximately 400-600 horsepower, depending on other factors.

How fast is 2000 CFM? CFM (cubic feet per minute) is a measure of airflow, not speed. It indicates how much air a device can move in a minute.

What happens if a carburetor is running too rich? If a carburetor is running too rich (excessive fuel), it can lead to poor fuel economy, fouled spark plugs, black smoke from the exhaust, and reduced performance.

How do you know if the main jet is too small? If the main jet in a carburetor is too small, the engine may run lean at higher RPMs, leading to overheating, detonation, and poor performance.

Is 900 CFM too much? A 900 CFM carburetor can be appropriate for engines in the 400-600 horsepower range, but it depends on your specific engine and application.

How many CFM does a 350 Chevy need? For a typical 350 cubic inch Chevy engine, a carburetor in the range of 600-750 CFM is often suitable.

Can CFM be too high? Yes, CFM can be too high for an engine, leading to poor low-end performance, inefficient fuel atomization, and reduced throttle response.

Does a higher CFM mean more airflow? Yes, a higher CFM rating indicates a greater airflow capacity for a carburetor or other air-handling device.

Is 80 CFM too much? 80 CFM is a relatively low airflow rating, and it would not be suitable for most automotive applications. It’s more in line with small computer cooling fans.

How much CFM do I need for 2000 square feet? CFM is not typically used to measure the airflow requirements for square footage in residential or commercial HVAC systems. Different factors are considered for HVAC sizing.

How much horsepower does a 750 CFM carb have? The CFM rating of a carburetor doesn’t directly correlate to horsepower. A 750 CFM carburetor can support different horsepower levels depending on the engine’s characteristics and tuning.

Is higher CFM better for carburetor? Higher CFM can be better for high-performance engines that require more airflow, but it should be matched to the engine’s needs for optimal performance.