My N/A single dominator carb E85 motor in my 2750 Lb. S/P bracket car has ran 8.864 at 148 + MPH all out and then by upping the 1st to high gear shift RPM(powerglide tranny) from 7000 RPM to 7300 RPM ran 8.886 at 150.+ MPH
My message is once you get near 150+ MPH HP comes into play a lot the last 300 Ft. in the 1/4 mile
For him run that quick at 140 MPH tells me he was on the brakes hard before the finish line, not just off the throttle only