>... I experienced power loss and rich running going over the Sierra Nevadas
a couple summers >ago.  I think it was 12,000 ft or maybe a bit more.  - Ken
Wilford

Ken,

Were you backpacking your Vanagon? <G>  Mountain height yes, however I don't
think there are any Sierra Nevada highway passes in the 12,000 foot range.
Tioga Pass at 9,945 feet is about the highest I can think of. For a road a
tad over 12,000 feet try Trail Ridge Road in Colorado's Rocky Mountain
National Park.

Garrett Adams - Stockton, CA
83.5 Adventurewagen GL