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Two carbs were used on this 327, and the highest horsepower number was obtained with this AED Performance 950 HO carb. AED buys unmachined castings from Holley, then does all its machining in-house, does precise parts matching, and installs its own fuel curve and calibration, among other features. The 950 HO actually uses a 750-cfm HP body combined with an 850-cfm baseplate. Real-world flow, according to AED, is 825 cfm. The larger baseplate allows airflow for power up top, while the smaller body enhances responsiveness since the venturi controls the signal to the boosters.