Overheating wowes that make no sense - help!!!

33 degrees total is not enough advance for a healthy 440. I have been fighting the same problem and my machinist suggested more advance. I was running 220 and above with 36 degrees advance total and would shut it down at 230 cause I didnt want to hurt the motor before I figured it out. With 40 degrees total it runs at 200. This is a 500 with aluminum heads flagella and a stout solid roller cam at 10 to 1 that runs on 93 octane. Give it a shot. What ya got to loose?