Intake Port Flow

Increasing Intake Port Airflow by 1 CFM can produce .27 HP per cylinder or 2.7 HP in a V10 engine (50 CFM x .27 x 10 = 148 HP)

Exhaust Port Flow

Cylinder Head Porting Modifications performed by Ned Erkman and Cylinder Head Machining Modifications Performed by Serge Tourikian All Viper Cylinder Head Modifications and Flow Testing conducted at Rolling Thunderz * Flow test data rounded to the nearest 5 CFM and accurate to within 3 CFM on our Superflow 600 Flow Bench.