Something different Building for MPG.

My second project (or co-project) will be to set up my '67 C-barge New Yorker for interstate highway travel. This will start after I begin work on the '68 'Cuda. I want the C-barge to cruise at 80 m.p.h. while still in high torque range, which I hope to be starting at about 2,000 r.p.m. I am not too concerned about horsepower.

It has the original 440, which I plan to freshen and increase power and combustion efficiency. I plan to use 323 gears and keep it automatic. Three speed auto kinda limits my gearing, but the torquey 440 should be adequate for accelerating the barge from a stop.

I will likely use a cam with the same or similar profile as a HP '68 440. I might use aluminum heads from 440 Source. I will definitely use headers.

If I can get that thing to suck 22-25 m.p.g. at 80 m.p.h., I will be happy. Of course, I would expect to get more m.p.g. at 70 m.p.h.

What do you guys think?