Stan Weiss' - Cylinder Head Flow Data at 28 Inches of ...
The flow numbers for Modern Cylinder Head were from a number of different sources, their Web Site updated Nov. '08. All flow numbers for MORGO Systems come from them Updated Sept. '13 — and were converted from 10" to 28". All flow numbers for NPS — Nordic Porting Service come from Marko Pirkonen their Web Site Updated April '12