Ill tell you right now that it will not shoot 366 right out of the box. My 356 is with a peep and loop. That would have put it right around 360. I was shooting a 330gr. arrow at 66#'s.
Aftermarket strings and tuning are the only way to get anymore speed out of it. The strings arent bad from the factory (America's Best). Tuning wise, the bow will be better if its timed where the top cam hits the drawstop first. You will probably pick up a bit of speed out of it right there... My bow was pretty well right outta the box tho. BH was right at 5.5" and ATA was less than 1/4" too long at apprx:33 5/8" rather than 33.5. The timing reference marks were pretty well in line with the cable, but that doesnt really mean too much...
Right now im shooting a 530gr. 2514 at 287fps at only 67#'s.
What DL are you?