Highest flowing sbm heads?

pittsburghracer said
The problem with an Edelbrock head, Speedmaster, ProMaxx, and any other Edelbrock copied style head is they start out around 170 cc intake runner. After around 195 cc you run out of GOOD area to take material from. Several of the heads that were pushed much past this point without moving the pushrod raped the shortside which was already a piss poor design. You are really walking a tightrope because to shape it right you have to lower an already low area.

The floor is very flat on my Edelbrocks which surprised me but they managed 288 cfm on a 10 " bench. In my view there's more than enough airflow available to make power but actually using it is another story. Dan Smith has a set of Eddies running 9's but says he prefers the 587's himself and looking at how his car runs has no problem using everything the head provides.