Do you know this from experience?
With Mopars, you put the bumper UNDER the eye. I fail to see how that would have the potential to bend the spring.
I have no experience with slappers and SuperStock springs tho, just with street springs.
I agree with
@MOPAROFFICIAL and others, on everything. and once you get the pinion under control, things will get brighter.
But one thing I am confused about; those 17s are not designed for drag-strip starts in the first place; why are you trying to re-invent the wheel. Since they don't work at 3500, don't go there.
Another thing that confuses me is why you are trying to run a 3500 to 7000 cam with 3.23s.
So clue us in, what cam specs are you running?
I once ran the 292/292/108 Mopar cam with a 4-speed and 3.55s, on the street. It didn't care how low or how high I launched at; it never wheel-hopped, never bogged, never complained, just motored. But; to be fair, she was running 11.3Scr and 170psi cylinder pressure.
Are you running a vacuum-secondary carb perhaps? If yes; my guess is your tune is also causing problems.