Following this thread, its good your having fun and thats much better, but if your really making 766hp with your weight/tyre/gearing and a good working converter your ticket would look like this>

Power to Weight Ratio: 4.11
60 Foot E.T. : 1.30
1/8 Mile E.T. : 5.89
1/8 Mile Trap Speed : 115.43
1/4 Mile E.T. : 9.33
1/4 Mile Trap Speed : 144
1/4 Mile Trap RPM : 6,697 +slip


As to your current new time slips, it seems that you could have around 16% verter slip and are only able to use 590fwhp from the motor>

60 Foot E.T. : 1.42
1/8 Mile E.T. : 6.42
1/8 Mile Trap Speed : 105.82
1/4 Mile E.T. : 10.18
1/4 Mile Trap Speed : 132
1/4 Mile Trap RPM : 6,139+16% slip=7121rpm.

Just a few calcs I did that may explain it some, I could be wrong?...I'm sure you'll get it sorted.