Went to start car last night and gas was shooting out of the vent stem. Good 5 to 6 inches. Thought is was a little weird. Had float stick before but not that much gas blow out. In any case thought it was float sticking and pulled of carb and bowls and clean as a whistle working fine. No debris - no gumming etc.
Put back together and same results. Could an overzealous fuel pump going bad cause this problem? Any other ideas.
70 351 Cleveland with I think a 600 Holley.n New model Holley w/o site glass.
What fuel pump are you running? Did you remove the needle/seat from the bowl and inspect it? If it was excess fuel pressure, it would sink both floats more'n likely.