Just how quick were the 273 Commando's in the Quarter-Mile.

My Mother had a 68 gt Dart convertible with 273 4 bbl , it smoked the tires with ease . Was quicker than the 70 318 that replaced it for sure . Wish they would have developed the 273 further , but those days cubic inches was the way to go . My father always ordered the biggest engine available , it was the thing to do