Let me save you a headache and any future ones. One particular one i recently did i used torch, sledge, air hammer, pickle fork and didnt budge. This pulled it out immediantly.
Get this -
3/4" Forged Ball Joint Separator
You dont need anything else ever again for tierods/balljoints/ etc in suspension, remove the nut put this bad boy on, just grease the bolt threads and put an impact gun to it.
Comes off/out in 5 sec.