If I drive it soft it will run threw gears fine but if I floor it and about 70 switching in to 3rd gear you will see a big cloud of smoke from the back and sometimes comes from under the car and in third it feels like its slipping loosing power I mean it is a huge white cloud of smoke my oil is clean radiator fluid is clean so Its not a head issue not overheatinf etc... I also do not think this car has a vacuum modulator that is what I thought it was which is an easy fix 1989 corvette 700r4 please help I dont want to have to buy a transmission
