I race a low 11 second Dodge Dakota on a [censored] track, traction has always been an issue. I have relocated DA viking shocks, Monoleafs, catracs, spring sliders...And instant spin.
A local 8.5 my got my truck from blowing the tires off to lifting the fronts an inch in four passes...I was bottom hole, no preload he moved me to upper hole with 1.5 TURNS preload with shock changes front and rear.
I'm still going to 14" tires and a 4 link...I'll be making more power next year with a looser converter and launching off a brake.
In summary...video tape your launch and play it back in slow motion, only way to see what is happening.