What should I expect from 450hp?

Got a 408 a 3350# Duster, estimate 450-475hp. This is a street only car--4spd, 3:23 gears with 245/60-15 BF Goodrich's. I got a Holley sniper so can look at datalogs. If I am in first gear rolling along at about 2000rpm and mash it, it takes about 1.75 seconds to get to 6000rpm. Only traction addition is the pinion snubber, but seems like it hooks up, tires aren't squealing or leaving black marks . Just seems to me it should be quicker or am I expecting to much?

Sniper with WOT a/f at 12.8, Edelbrock rpm heads & intake. 235/239 @ .050, 535/550 lift. 9.5 compression