Pump Gas Non Stroked 340, 537 Hp

The dip may have more to do with the fuel type than the intake and port. The dynamic ratio calculated by PipeMax is 9.3:1. That's kind of high for pump fuel. He even notes he thinks the fuel was limiting the low end pressure when they were trying to advance the cam and bring that number up. Th epower drops because the engine is detonating. That's why I'm interested in the burn pattern and BSFCs.