I'd lower the start line RPM. The chassis reaction is already used up when the car launches. Here is a vid of my buddy's 69 RoadRunner, this launch was at 2300ish. Notice how smooth and controlled the suspension works.
Agreed, thats how it should be. I take your words on board. Both front/rear are smooth, unfortunately it looks like our lakewood 90/10's on the car are staying:( so we will stiffen up the rears/up the psi, leave just off idle so still have travel left and see. I've just bought some rear shock extensions if really needed. Don't know if we can sort it without stopping the front being so violent, cutting bump stops down may give us a bit more separation which may help, we'll try with what we have, Calvert say if it hooks and spins to soften shocks up 1 click@a time but thats assuming the front is good. A go pro should be fitted inside (I don't know anything about launch/shift/trap rpm) and on the rear susp I'm told so perhaps we will see whats going on better, after spending all that money, to not spend just a little more (even my money) on something as important as front control is making things hard, but it is what it is.....Also I note you leave@2300 with no body movement you must have a good converter and running 10.9's@123?.(around 550fwhp?)..our issue is@720ftlbs we need better equipment I think than whats on the car currently but none of it is my choice.....maybe next year?.