Cruising with a high stall converter

Spoke to Ultimate about this, except I used an 800 hp efi Hemi in my example. Len told me that he is working with someone in Vegas that is attempting this. When he has the convertor tight enough so that the torque does not make the convertor slip at freeway speeds climbing hills that the car suffers at the strip, when he has the convertor loose enough so the launches well at the strip, it slips out on the road. Might want to contact Supershaft, he is a member here and sells the gv unit. I am sure he has an opinion on it....