My challenger in my sig pic has a 440 with edelbrock rpm heads 9.8:1 compression edelbrock rpm cam,1.6 rockers,M1 intake 750 double pumper,headers,msd.Also has 3.55 gears with an 18 spline 4 speed.Just drove about 70 miles on wednesday and got 12 mpg.Never been able to get better than that,but I think I have way to much cam for highway cruising.But stand on it and its all smiles.
