MPG The Best Of Both Worlds

"What would be the best mods to up the MPG without sacrificing E/T to much.
Here is what I have.
Sell 360...400 big block that needs a rebuild in the garage ( more power at less rpm)

Edelbrock 750 vac sec carb. 3.23 gears (came stock with suregrip)

I have an appointment to get the Dart dyno tuned June 4. Want to get the best tune possible.

Swap carb and gears, buy a new cam?
Keep carb, cam, swap gears
Keep everything the same, tune "

Since you already have a 750 Vac Sec carb, try that, both milage and 1/4 mile time. Then the 3:23 gears, swap them in and see what milage and 1/4 mile time. Do things one at a time so you know what works and what does'nt. I also have to agree with the Thermoquad and vacuum gage. Also Wide Open Throttle never gives MPG, but I guess you know that.