The bowls were shaped on a 3 axis CNC in an ovalized venturi shape and the intake ports were knocked out on the same machine about an inch deep. All of the ports were hand worked after that and all of the ports were flowed and balanced on the flowbench until they were as consistent as they could be. This took the better part of a month-some ports took several attempts even though they looked and measured the same. All ports flowed from lowest to highest of 292 cfm-298.5cfm @ 600"-.650" . Manley 2.08"/1.60" valves in a 5.220-5.250" length were used. J.Rob
