If you use this spring, you cannot use the stock clutches or converter as the lining will start to separate. The latest BW clutch material is not very good.
145 psi operating pressure is still way lower than the 230 psi in all previous Allisons so I don't see a problem. No I have not towed with it and be carefull which converter you choose as none out there work very well with this new truck.
So in order to run the spring we will have to also replace clutches and torque converter? Just wanna make sure I am gettin that right?
I am interested in doing it, running an HS tuner on tow or street and don't wanna do any damage to my tranny