Tuning a DD 383 for optimum mileage / 1/4 mile performance

BigBlockMopar said
Those who bluntly say Performance and Mileage don't go together are fairly short sighted, as they are exactly the same thing!
The goal in both cases is to make the engine run more efficient in the rpm-range of choice.

First step I would make is to go digital with the timing advance curves.
You can only do so much with springs and weight in a mechanical distributor. With a digital ignition you can tailor every rpm-range and every vacuum-range (work-level) of the engine.

Focus on getting an engine to run more efficient in all rpm-ranges and you'll get rewarded by better mileage and performance.

Yes and No

Yes if you can increase the efficiency of your engine you can increase mileage and power.

But really that only can take you so far. Most things you do to gain performance especially on an already built engine is gonna be by adding more fuel and air (less mileage) or by increasing mileage at the expense of performance (less fuel and air).

But yes I agree you should dail in your combo to get the best of both best as you can.