So after all the fun of a rebuild with 351 c studs, a 1.5 head I rebuilt, and pocket ported, and file fit oversizes rings I drove 1200 miles to nevada. Averaged 63mpg. cost me like 70 bucks to drive to my other future home. Went slower though, about 60 mph. Helps a lot with mpg. leaned out the ip to the point of near power loss and set pressure at about 40 psi at fast idle. These cars are a real joy to own. My insurance is only 90 bucks a year too. love it... Will never sell it unless fuel is .50 cents a gollon, or I invent anti gravity and build a hover car..