Thanks all. And I fixed the link Rev, Thanks.
The 20 mpg was on last year's tour. This year while up in the mountain, I recorded 22.5 mpg. The oxygen sensor is the key component. The engine only gets enough fuel to satisfy it's 14.7:1 air to fuel mixture, sea level or mile high, it's automatic.
There were some guys on the tour from Colorado, with a carb tune-up for CO. Their car ran crappy most of the tour till the 2 days up in Mt. Airy. The only way around that is to get some kind of "dial-a-jet" carb or fuel injection. My car ran great all week and I let Vic Edelbrock Jr. know how pleased I was when I met him and his daughter.
I'll have a 2nd car, a fuel injected 340 72 Cuda in 2007's Power Tour. I already have my rooms in all 7 cities. See you all there!
Rob