lt1383procharger471

94 ta lt1 procharger 383 bored 60 over trick flow heads msd opi. 2 mounths ago. dino 471 hp 471 ft torx don't no how i puled that off was running great wile driving it seamed to lose some power at lower rpm I heard the pre detonation and little back firing. Idling low I just put in 60 lb injectors thinking that I had a bad one after all my 42 lb ones were maxed out. I checked the plugs changed the wires. but still not wright. seems that #3 cylinder is getting way hotter then others header pipe is like 900 degrees ware others are 550 what should I do