Okay , now my Dart is a stick car with a 1 inch lower mono leaf Cal-Trac suspension and still running the 5 click Rancho shocks that came with the kit 18 or 19 years ago. I leave the line at 5000 off a 2 step and a micro switch mounted to the clutch pedal with Cal-trac's set in the top hole and 0 preload, front shocks are single adjustable QA1 set on 1 click, rear shocks I set at 2 or 3 clicks. The car usually will 60 in the low 1.50's, on well prepped track it will go high 1.40's. If I set the rear shocks on 4 or 5 and car hits hard it will porpoise like yours and I have to turn them down. I run a 3.04 first gear and a 4.10 rear gear for a 12.46 LSR( not optimum for a stick car). Now I can't tell you what my shock settings would equate to in a double adjustable shock( maybe some one else can). The first photo is the car sitting at static height and the other shows the amount of separation in the rear suspension, about 2 1/2 to 3 inches.
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