im cureently bulind my Sleved and stroked LS1 plan to put just about 500 to the wheels.....I already have a 4400 stal verter in my 4L60e now... the car is not a dailey driver i just use it on the weekends. i do some highway driveing about twice a month. what whoul dbe the beter way to go... car goes to the strip a few time a month

 

TH400 no doubt, especially if its not daily driven.

 

what do th-400 converters for a LS1 run