Im looking for a viable ways to raise my top end. Im not totally sure where to start, but I was betting the trans is probly a good place to work. So any help would be appreciated. Ill list my set up below but im running a th 350 with a shift kit and hardened matalic gears. I dont know much about this topic which is why im coming to you guys for help, not sure if what I want can be done with my current trans or if a new trans is required and if so what type?

Im runnin a 350, bored .030 over, performer rpm intake, 2.02 heads, comp cam .490 lift, 286 int/236ex @ .050", 650 edelbrock thunderseries carb, msd 6al ignition with a 55k volt coil.