Torque converter

Loco, I was hoping you would chime in here as you are running a stocker too. This is not the truck it is my new ride. Tire hook is not an issue, car is very soft off the hit. Have played with the carb a bit. Put my bothers 750 HP on it with out much change in 60. I do have a new 750 holley for CM stock. Have heard that sometime a smaller carb will help. The verter is 4500 or so but more then likely that was behind a 800 + hp hemi, which would be much different behind a 400hp 5.9l. Right?