Re: 1948 288 gas MPG

Posted by Ross On 2009/10/2 19:27:28

Most 288s seem to be able to turn in 16-18 mpg---but not in city driving. I suggest a careful timing check with the vac advance line disconnected and the engine idling slow. Set it to about 7 degrees. If the timing is a little retarded on these flatheads, they lose a lot of power and economy. Oh, and do make sure your vac advance works! Good luck.