What was the fastest accelerating vehicle in 1978? Little Red Express pickup with essentially the same motor as the 74 hi-po 360.
The really dog 360s not only had the low compression ratio, but retarded timing, wimpy cam, lean carbs and then catalytic converters. They had way less than 200 horsepower even with a four barrel carb.
For what it's worth, the 74 Duster 360 motor in my 67 Barracuda just ran 13 flat at 106 with the same low compression stock replacement pistons that have been in the motor since 1991 (.100 below deck at TDC), a 450 lift cam that's one step above stock (also been in the motor since 1991) and 3.55 gears.