Dyno a 7.5:1 400? Sure, why not?

Back in the late 70's we had a printout of Direct Connections "recipes" for a bracket car. It was based on an A body (duster I think) with a 400 in it. The "recipe" for each category was spelled out in detail with part numbers for 14 sec., 13 sec, etc. with suspension mods. needed to run in that bracket. Nobody really considered the 400 a performance motor at that time.