6.8 MPG ok?

[Ronw435]

Im driving a 65 C-10 which is basically stock. Has a 283 with a RV cam. It had the original 2jet Rochester which I believe was just wore out. The power valve piston was so bad that you could rock it back and forth in the bore. With that carb running around 60 I got 8.6 mpg. The exhaust was always black with carbon and would actually spit carbon out on the concrete just idling. I removed the 2 barrel carb and manifold and bought a Qjet manifold and carb off of a 67 327. Rebuilt the Carb and now I am getting 14 mpg on the highway running 65mph. It is a 3 on the tree with 3.07 gears and dual exhaust. I am running around 2400 at 65 which I believe is right in the power range. Now I am 63 and have all the hot rodding out of me .............well almost.....but for the test I drove it as reasonable as I could. That mileage was on a 300 mile trip so from what I have read is probably about the best I can expect. I hope to tow a 2800 lb travel trailer with it without the mileage tanking. If I can get 9-10 I will be happy. I have the total timing at about 34 degrees with the vacuum advance hooked up to ported vacuum.