440 or built 360 71 demon

I had a 73 Dodge Dart that was a factory 318/904 car. I built a 440 for it. The car would run 10.40 in the 1/4 on 93 pump gas also that was with the wrong converter. Also would like to add that a big block in a Abody is no harder to work on than a small block in the same car