What MPG are you guy's getting, What combo/

4 MPG criusing on the highway I did a retest and got 60 miles from 10 gallons at 70mph
Dodge 3000 lbs
496 CI\
850 vac Sec
906 heads ported polished
MP 590 Cam
3.23 gear

727 3000 stall(2600 actually)
3100 RPM at 70MPH

What combo and mileage are you guy/s getting?
I am not a drag racer presently hence the 3,23 rear gear