Small block TrickFlow heads part 1

Ok guys finally spent a little more time on this head tonight’s. I’m going to say I spent 10 minutes on the exhaust port. I held a stock Mr Gasket header gasket on the head and the lower part of the gasket cam to that line you can see on the exhaust port. I took about 1/2 that distance and you can see in the side by side. I removed the cnc cutter marks smoothing the port with a carbide burr. I knocked that lip off the valve seat and slightly shaped the short side widening it some. Airflow at .500 with a tube ( 2 inch) went from 221 to 239. At .550 went from 261 to 248cfm with the tube.