[cobrashoch]

Gumball - Sounds like a classic vapor lock problem to me to. Some ideas. Most times this can be helped if not cured by running larger fuel lines. You also need to check for crimps and reductions in the line to. You may get away easy if you find something there. I assume that you checked the fuel filter but did you check the little filter that goes to/inside the carb? A return line on a electric pump may whip the stall but you need the pressure gauge set to the carb after the regulator. Make sure you are using a full flow high performance fuel filter, not the stock production type. Lots of luck. P.S. - We don't have mountains here in INDY.
cobrashock