why would my car start to fall over in the top of first gear only . but when i shift into second all power is back for the rest of the 1/4.
I'd be shifting at 6,800 my shift light comes on at 6,500Why do you want to shift at 6800??
From Summits site:
Basic Operating RPM Range3,200-6,200Intake Duration at 050 inch Lift252Exhaust Duration at 050 inch Lift258Duration at 050 inch Lift252 int./258 exh
If your shifting by a light at 6800 your going well into the 7000 range by the time you pull the shift in first gear.
You're running the stock tank ?
If so, did you install a "sump" kit or are you using the stock pick-up?
What size fuel line / hoses are you running from the tank all the way to the carb?
Running a vented cap ?