using wallace with your weight/tyre/gear and 540hp I get>
60 Foot E.T. : 1.61
1/8 Mile E.T. : 7.29
1/8 Mile Trap Speed : 93.20
1/4 Mile E.T. : 11.56
1/4 Mile Trap Speed : 116
1/4 Mile Trap RPM : 4,928 down
with 4.10's its 5700 trap, better...4.3's>6000, I reckon there's more in there hp wise, just got to unleash it at the right time.

As an example, I was running 13.31@101 in street/strip mode with 3.55's/26" slick and a 3500stall combo. I added, 4.30's/28" tyre, 4200stall+ better cam/carb/hdrs and went 12.39@108.6, mph shows +65hp in the motor which is not a second improvement in ET, its how/when its delivered.

1969 'Cuda 446ci, best 9.96@133.9 in 1990
1971 340 'Cuda, best 11.01@122.8 in 1987