Carburetor CFM Calculator
Free calculate carburetor cfm (cubic feet per minute) requirements based on engine displacement, rpm, and volumetric efficiency.
Input Parameters
Typical: 80-90% for street, 95%+ for race
Results
Enter parameters to calculate CFM requirements
CFM Calculation Formula
CFM Formula
CFM = (Displacement × RPM × VE) / 3456
For 4-stroke engines (displacement in cubic inches)
Typical CFM Ranges
- • Small engines: 200-400 CFM
- • V8 engines: 500-750 CFM
- • High-performance: 750-1000+ CFM
- • Race engines: 1000-1500+ CFM