Finally got a chance to run the car hard.........3000 lb. '65 Dart. AlterKtion front end with QA 1 single adjustables , Cal Tracs in back with their 9 way adjustables.
I got it into third and it was still pulling hard but the car started to porpoise and it was getting more pronounced as it continued to accelerate.
It was pulling pretty good.
I lifted at about 3/4 track and rolled through at a 12.24 @ 110 , with a very soft launch.
I have the rear shocks at 6 and the fronts are at 4.
I really should scale the car and figure out the bias / balance , but have not done this yet.
I suspect that the condition is originating in the rear of the car , but would appreciate any ideas as far as what to look for or where to begin making changes to try and correct this.
What are the common causes of this ?
Thanks in advance for any help.