Well the good new is TrickFlow said they flow a max of around 300 and I think I got 301 on the first port I flowed. The bad news is I put the other head on a month ago as I was porting a Victor340 for a customer and I thought I would give him numbers from my head with his ported intake on. I wanted to test flow the head first and man the port went turbulent real bad. Too bad to test on. So I unbolted it and tried another port. That port maxed out at 290cfm so I did his flow testing. A week later I did some airspeed testing and found the problem was on the shortside. I spent about 8 minutes on it widening that area and found the 12 cfm. There’s more to be found there with more work. I’ll try to remember to measure that Speedmaster port after church tomorrow.