1962 Buick, 401 +.040, RV-3 Cam, T-400, 3:42's, non posi... with a 2 bbl= 16 mpg, 4bbl carter= 25mpg, 4bbl Quadrajunk=18 mpg, 2x4 manifold w/2 4bbls= 22 mpg, 2x4 manifold with 2 bbl adapters running w/out progressive linkage= 25 mpg
