Who knows transmissions?

[68Stepbed]

Originally Posted by GMR-PERFORMANCE

If you don't mind why did you choose not to use a US shift module?? I run a 4l80E 4200 stall 245/265 ufo convertor with lock up and a D3 trans brake and run it at the track and on the street and have to say that it is amazing how well it works. The Newest US shift module will now learn ( to alter shift points based on driving and TPS) and offers data recording as well .

My trans is a non-electronic 4L60, basically a renamed 700R4.