When the trick flow heads came out AndyF ,Icq,and another engine builder put out dyno and builds somewhere in the bbm section.Andyf did a intake flow and trickflow flowed the most out of the box.He sent a m1 to get ported and after that it flowed more.
I looked and the post is gone.Andyf and others gave a lot of free info away.I machine shop closed.I had bought lifters of him.I can't remember his name but like Andyf and another shop in Kalifornia was full of free help.