Thanks guys, I'm playing with those clutch fans now. I've contacted a guy here on Moparts about one of his seven blade fans. I'm running a server duty thermal clutch fan now on the five blade, and really didn't see a difference.

I've got another thread on this with the clutch fans and post my questions in that thread. Learning here, please bare with me. I'm so used to running a direct fans, being the flex fans factory and non factory.