My trip to the track...

318willrun said
It will be interesting to see! I love test and tuning! I dropped 4 tenths once on a high 13 second car by going from a 750 vacuum secondary (without the rear metering plate) to a 750 holley double pumper. If you are lean from the 60', your whole ET and mph suffer.... This time of year, heat and humidity in the St Louis area will rob E.T. and mph too.. Keep her cool... :)
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I may get lucky as the weathermen are predicting partly cloudy skies for tomorrow with a high of only 79 F and a low of 61 F with only a 20% chance of rain. The weather might be good for a couple hundredths. I plan to make a couple of baseline passes with the float change and then try upping the timing a few degrees.