or make a better power to weight ratio, better aerodynamics. etc etc there isn't any way to get better gas millage.. Which beleive this or not i had a 89 Lincoln Mk 7 lsc with a HO 302 and a turbo 400 trans that would get 28 miles to the gallon... after i rebuilt it with trick flow heads and intake and some other goody's. Can any one explain that.. I 13 sec, 4200 pound car that got 28 miles to the gallon...