I could live with 29 mpg

Leon,
to me this and race engines are basically the same thing, getting more power from the same amount of fuel
I like your "diesel" theory
this has nothing to do with the subject but
I remember that saab experimented with variable cr, very high under light load and less with higher load, worked well but I guess it was to expensive to produce
just pretty hard to do on a v8


-65 Valiant,420", all motor,2700#, dot tires, 8,42 @ 160,2