* Engine modifications: A stock 440 will have different needs than a heavily modified engine with high compression, high-flow heads, and a performance camshaft.
* Intended use: A street-driven car will require a different carburetor than a race car.
* Desired performance characteristics: Are you looking for maximum horsepower, maximum torque, or a good balance of both?
* Fuel delivery system: The size and type of fuel lines, fuel pump, and fuel filter will also influence carburetor selection.
General Guidelines:
* Stock 440: A 750 CFM carburetor is a common and popular choice for stock or mildly modified 440s.
* Performance 440: For highly modified engines, you may need a larger carburetor, such as an 850 CFM or even a 1000 CFM.
* Multiple-barrel carburetors: 4-barrel carburetors are more common for performance applications, while 2-barrel carburetors are typically used for street-driven cars.
Here's a simplified breakdown:
| Engine Modification | Carburetor Size (CFM) |
|-----------------------------|-----------------------|
| Stock | 750 |
| Mildly modified | 750-850 |
| Heavily modified | 850-1000 |
Important Note: These are just guidelines. The best carburetor size for your 440 will depend on the specific details of your engine and application. It's important to consult with a knowledgeable engine builder or performance shop to determine the ideal carburetor for your needs.
