i agree with said gimp as well. j/k corey. dont listen to anyone other than ls1 owners with 4l60e trannys. it is a totally different world. the car moves just fine with a ss3600 convertor.

first not all convertors are built the same or perform the same.

second a 3600 convertor can and will have a totally different characteristic as a different brand.

then there is the confusion that some brands like vigelanti stall higher than rated (there 3200 stalls at a real life 3700 rpms in a stock ls1 car).

best and ONLY way to determine is get in and drive one. you will be amazed how streetable and after the first week, you wont even notice it at part throttle. coreys convertor is built to be night and tight and move with just a little throttle effort. my yank st4000 is more loose but a big harder hitting.

just have to compare apples to apples. now if you were to tell me this is a non-lockup th-350/400 with a 3500 stall, i would say screw that!