How much up shock travel do you have when the car is at rest on the suspension? I was told by Avco years ago to set the ride height up so it is resting at 1/3 from being bottomed out, 2/3 up travel scope
Can you post a video of the car leaving the starting line?
That will help us help you up

Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)