The primary difference between a 750 and 600 CFM carburetor is the maximum amount of fuel they can flow in cubic feet per minute (CFM). A 750 CFM carburetor can flow 750 cubic feet of air per minute, while a 600 CFM carburetor can flow 600 cubic feet of air per minute. This means that a 750 CFM carburetor will be able to supply more fuel to the engine, which will result in more power.
Engine Size
Another difference between a 750 and 600 CFM carburetor is the engine size they are best suited for. A 750 CFM carburetor is best suited for engines that are 350 cubic inches or larger, while a 600 CFM carburetor is best suited for engines that are 300 cubic inches or smaller. This is because a 750 CFM carburetor will provide too much fuel for a smaller engine, which will result in poor fuel economy and performance.
Throttle Response
Finally, a 750 CFM carburetor will have a slightly slower throttle response than a 600 CFM carburetor. This is because a 750 CFM carburetor has a larger throttle body, which means it takes more time for the air/fuel mixture to reach the engine. This can make a 750 CFM carburetor feel less responsive than a 600 CFM carburetor.
Conclusion
Ultimately, the best carburetor for your engine will depend on the engine size and power level. If you have a large engine that needs a lot of fuel, then a 750 CFM carburetor is a good option. If you have a smaller engine that does not need as much fuel, then a 600 CFM carburetor is a good option.
