Anyone running the 3080 33x15x15 on a 2900ish lb door car? What pressure are you running?

Car is ladder bar, glide, 4.88 gears running 5.90's, 468 engine.
Just looking for a starting point. I was thinking 8lbs.

3000lbs 8.12 @ 168 mph ladder bar a-arm car ran 8-8.5 lbs in my car with the 3080s

Mine is 2600lbs.,582 conv. heads,run 'em @ 7lbs.Been 1.11 60ft.

Thanks Guys!