Brand New 7290 U-Joint Failure

Yes but this is a street car and I set the pinion according to a tech at Mark Williams. Its rare that I do the 4K drops but which did not break it, it was the 1, 2 shift, no tires spinning.
I estimate the mtr is 425 to 450 on the power.
I have 255/60-15 drag radials running on 3:23 gears 489 case.
I want me some of those tires
cuz at 433hp, my engine smokes 325/50-15 BFG DRs to over 80 mph, with 3.55s; leaving with a 2.2 or slower in the 60ft.