Very impressed with gas mileage

RustyRatRod said
No, you cannot average ONE trip. It doesn't work that way. Go look at any window sticker. It states MPG as an average. That's always how it's been calculated. Go back and look at all the responses here. Mine was the one who called you a liar the LEAST and yet you go off on me? How bout screw you and the horse you rode in on? You just made the list.

Relax, bud. You’re too uptight. It’s not that big of a deal. We are simply having a conversation. I disagree with your point. It’s not a personal attack on you.

SIX225 said
Verify the odometer againast a GPS. Suprisingly my odoometer is quite accurate. The speedometer is all over the place. My stock '68 225 with 145K has been a consistant 18.5 MPG in mixed driving after a real good tune up (valve lash, float level set,weights in distributor not stuck, vac advance works, heat riser not stuck, etc.).

I did. Same results as you regarding the cluster. Speedometer is 4 mph faster than gps and odometer is dead on down to the tenth of a mile compared to gps. Make no mistake mine gets mileage I stated. I’ve run the car all over hell’s creation since then. It sips gas. It’s shocking to myself having owned several LA small blocks in stock form.