That is correct, but my point is that tuning is required no matter which car brand or type used to get optimum performance. During the '76-'77 gas crisis, i changed the cam in my 340 to a 318 cam, tuned the AVS to perfection (leanest AFR for power) and used 2.94 gears and 28" tall tires. I got 24-25 MPG on drives from LA to SF or the like and actually went from South SF to Irvine, CA on one tank of gas. ~400 miles. The car still turned 14.50's at OCIR with this setup, so it was no slouch, but down from 13.50's stock.
