Nobody can tell you until we know the weight of a vehicle@the line, a previous time slip for mph, then we know your hp, then it can be worked out reasonably close.
examples>
A 3000lb car that has 650fwhp can run 9.70@138, the same car on the same day with 100lbs taken out needs only 628fwhp to run the same ET/mph...22hp less.
A 3500lb car with 650fwhp can run 10.21@131, @3400lbs its 631hp....19hp less
A 3500lb car with 300hp can run 13.21@101, @3400lbs = 292hp, 8hp less.
