I am looking for an answer to this question about MPG as Well, My 65 Chevelle has a bit of a run down 250 in it, and I seem to be getting about 16 mpg highway miles at 50 MPH. I have a stock internal 250 with offenhauser 4 intake,with a Holley economaster 2 barrel, I think they're 350 cfm. Hei,Powerglide car, with 3.08s weighs 2900. What am I doin wrong? 16 Mph I coulda kept the 8.
So 16 MPG is My number anybody else wanna put up theirs?
16? I wish I got 16. I am lucky to see 12 rolling downhill with that worn out integral 250. I shouldn't complain too much though. It does have 310,000 miles on it (rebuilt once about 180,000 ago).
