Eagle crank claims another victim

Reminiscent of my cast eagle 408 crank. It was good for 500 horse they said. Worked great the first year in my Dart with the auto. Then I put the 4 speed in and the first time i powershiftef it hard into second somewhere north of 5 grand it started vibrating badly. It fractured the crank just ahead of the forward most counterweight, very similar to yours. Eagle creditted the cost of the cast crank toward tbeir forged one...... there wasn't too much other damage thankfully. The forged piece was much nicer.