My NEW trans died today.

[my new 72]

Yep, that's right, my brand new trans with less than 1000 miles on it just quit today. I was driving on the freeway doing about seventy when I gave it a bit of gas to get up in front of someone and it just went dead. The engine would rev, but no o on the transmission. Just before it died I heard a ticking sound that got fairly loud and len went away. As soon as it went away, so did all the gears. Anyone know what may have caused this to happen? The trans shop that built it said that it would handle up to 450hp, and I'm just about there, but not more. I even run a B&M 2200GVW trans cooler, so I know heat didn't kill it. Any ideas would be good. I had it towed to the trans shop, so I'll know the exact cause then, but I really wanna know now.