thanks again for all the input.
the 590 looks unobtainium at the moment,no biggy as i'm not ready yet.
Deaks,i know you have more comp but how does your motor/590 cam idle - way high?rough like a 509?
am i correct in thinking that i will need 6 - 8 degrees more duration on a solid to be somewhat equivilent to a hydro cam.hence from what some are saying i may really need closer to 260 or 265 to see a real gain,plus raise my peak power to around 6300 from 5800 now.is this what you are pointing out Greg ?
by the way i have 1 7/8 hooker comps into a 3"system to the diff with aero chambers.825 mighty demon on a M1 single plane.
Tex