Fellas-
Torque doesn't kill trannys, heat does. Torque breaks parts and if you didn't hear a loud bang and things stopped moving then heat killed it. The number one thing you can do to increase the life on an auto trans is called "lubegard". Every trans shop I have ever known uses it and it works. I have run it in everything from honda cars to my cummins dodge. My race car went through 6 "so-called" race trannys before I put a stock 727 with lubegard in it. After that it went 25,000 miles, around 400 of those a 1/4 mile at a time and used over 300 bottles of nitrous oxide without a single problem. My dodge has 190k on it and lubegard since the day I bought it and not a single problem. It also cures the Ford power steering morning sickness that is so common. Run the largest trans cooler you can find and pour in lubegard and forget about your trans forever. Theres my three cents.
Lance