2500 stall that stalls @ 1800 crappy

I just got a B&M 2400 hole shot stall. it stalls at 1600 to 1800. I called B&M and they said that it was because my cam. RIGHT. And they said that my car didnt have the torque. if a 150 shot of nitrous cant give me the torque than what will. if that is right please tell me If not they are getting another call But I will not be very nice to them this time. but no matter what that sucks *****

thanks
Brad