Big Block Chevy EFI Conversion: Throttle Body Sizing, Intake Selection, and Tuning for 454 and 496 Builds
Big block Chevy EFI conversions require a minimum 90mm throttle body, injectors sized for at least 80% duty cycle at peak demand, and fuel delivery capable of sustaining 600 to 800-plus horsepower without pressure drop. A BBC does not tolerate the undersized hardware that works on a small block. The displacement, the airflow requirements, and […]
