H2SUTSC: This is THE H2 site.
Yes I had the trans done. It was really a no brainer. LPE highly recommended it due to the huge power increase and they warrant their work. With the SC alone a total HD rebuild is probably unnecessary.
Bill is right with his "simplified discription". Just imagine stepping on the gas and the truck not really moving until it gets to 2800rpm. The engine "flashes" to that rpm and away you go. Drop the clutch an a stick at 2800 and you will understand. Though it is not quite the same.
Around town the rig has very docile manners, except for the volumn and shift points
. You really would not notice a difference with the converter alone. I have had higher stall converters in other vehicles, but did not notice a harsher shift at first. However, usually when a converter is installed a shift kit or reprogramming is done to the trans so a different shift pattern will occur. You will then have a harsher shift.
With my truck the shifts occur at a much higher RPM than normal, then bang into the next gear. They do not "slide" gear to gear. But that is what I wanted. It can be programmed anyway you want it.
I am going out shortly. I will try to remember to jot down the shift points of normal around town driving for you and post later.