I think other nerds on here could calculate it backwards from the formula
s=(1/2)(a*t*t)
assuming a quarter mile time of 10.0 seconds to fix an accelleration rate. Then use that accelleration rate to calculate for 1000 ft instead of 1320 ft. That will give you a rough percentage for the 1K time.
I know the eighth mile factor is about 64%.
Let us know your answer.