Thanks for the input.
I think jhv48 nailed it.
Found this on a fellow Cobra owner in my area.
www.chuckbrandt.com
"At this point I think I have to assume I have a winter fuel or fuel system heat problem that is causing fuel to boil in the bowl. If you read this article
http://eps-hane.com/techtips5.html and follow this thread
winter fuel formulation it's almost exactly what I'm experiencing. These guys are at higher elevations but it sure sounds like the same issue.
So after work today I went and bought 5 gallons of 100 octane race fuel to mix with the half a talk of (winter) ultra in the car. At $4.70 a gallon I won't want to use this all the time but it seemed like it would be worth a try. I adjusted the float level on the 750 Holley slightly low and put it back on. We drove it around the neighborhood without problems and had a little more success with a hot start test, no geyser. "
So I am going to try some VP Fuel 110 race gas and see it if fixes it.
Best,
BC