Best guess on 440 RB motor

Man your combo should put you deep into the 10's even high 9's.I would go to the victor intake with the dominator and you would probably run nines.Motor is capable of easily handling 7000 through traps. My 70 cuda weighed about 3200 with me in it with a 451 stroker running iron heads with a ss port job and a comp 625 roller and a 4500 continental converter.I had 4.56 gears and a 29.5 11.5 tire.Ran 10.50's leaving at 3000 on brake with 1.40's 60's.You have a lot more motor than i did.Motor would go through 1/4 at 6800.I shifted at 6300.