Speedmaster Small block porting tips and results Part 1

Thanks for the thanks but our other members that are contributing to this posts can answer valves angle questions better. I’m locked in th only being able to do old school 60-45-30-15-10 type of fixed angles. The Edelbrock and Edelbrock copies suck azz in the chamber but respond well to a 15 degree top cut. I hope the other guys chime in on this to help you more.
What are you using to cut your seats?