As suggested above the Wallace Calculators are very helpful.
Here is are your target numbers
60 Foot 1.65
330 Foot 4.77
660 Foot 7.50
660 MPH 90.63
1000 Foot 9.87
1/4 Mile ET 11.89
1/4 Mile MPH 111.48
If you put your current best 1.80/7.99/84 one piece at a time into the ideal calculator you can begin to see a little of the picture.
At a 7.99 you should 60 - 1.76 and mph 85.07
At a 1.80 you should et 8.17 and mph 83.19
At 84 mph you should 60 - 1.78 and et 8.09
So your ET and mph are good for your 60 ft
However, you have a low enough ET you should 60 ft and MPH better.
At 3,800lbs you need about 400HP at the wheels to go 7.50, so with an automatic probably right at 500 at the crank (again as mentioned above). Based on your 7.99 at 3800lbs you would need about 85 more crank HP as you are making a little over 400 at the crank now. I would do a quick leak-down and compression test to see what you are starting with, once I knew I had a solid bottom, I would give Dwayne a call and have him spec you a cam. You didn't mention compression or rpm so those are big factors. Once you get a better feel for your power curve, you can gear and converter it to make it work together (as it is likely you will need more of both).
That is good information. But I would suggest getting the 60' down to the 1.6 area first. That, by itself will help the ET significantly and probably reduce how much more power was needed to get on down to 7.5. And the improvements done for that would be necessary anyway after additional power was added because adding power first could possibly make the 60' worse rather than better.
