Anyone drag race with higher gears in the rear end?

I have a 300o stall convertor in the Duster. I've had my 4.30's in and ran it on the street. Not out on the highway at 55-60.
But I didn't have any slippage with it.
I change the gears out for long hauls. Got a set of 3.23's for cruising.
I'm also running a set of 255/60-15's on the back most of the time. A set
of 275/50-15 drag radials that I run at the strip.
Never had problems with the convertor. Better get it checked.