Since my car have near 600 hP to the crank, i saw that when i floor it often the car burn some oil it is a good thing to put 20/50 oil in there 4.6 L, my car is vortech blowered
Nah.. english sounds ok, just sounds like a southern accent. (Bring on the hateful PM's.)
I wouldn't run 20w50 in a modular, unless your tolerances elsewhere in the motor are seriously more than they used to be. If you have that much wear, I'd go ahead and suggest a rebuild anyway. But I doubt that's the case here.
In any case, running thicker oil to prevent burning is merely a band-aid for a bigger problem. Depending on the general condition of the motor itself, I'd say you've got some wear, whether it be valve seals, or rings, etc.