Hi not that I know alot, but what does a tc and valve body kit have to do with fast.
From what I know, a tc has to do with the amount of stall it will produce off the line the more stall the more it slips your converter has around 1600 stall the more stall the more it takes in terms of rpm to make it go from the line. race cars have about 3500 to 4800 stall, tach has to be at that number before it goes or it slips
As far as valve body that is the brain of the trans, a trans has no power just what the engine gives it. you can tighten up the shifts and make them firmer but as far as fast, work on your engine that is where your power is.