If it is a vac secondary carb, how do you know the secondaries aren't opening? It is common for a racer to pull the air filter off and rev it in neutral while watching the secondaries and wonder why they don't open. well, they will never open when in neutral because they only open under high load when the engine needs the air. I think Holley sells more double pumpers this way . . .
Anyway, like travis said look for a vac leak and check the float levels. The float level should be set so that the fuel just barely drips out of the site plug. Make sure th car is parked on a level surface when you check the adjustment too
ps. The secondaries will open sooner WITH an air cleaner installed.
E85 racer and E85 carb builder
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68 Camaro, E85 powered 427" small block. 9.96 @ 133 MPH, 1.319 sixty foot on motor. 5.92 eighth @ 116 with a 1.42 sixty breaking beams with back tire on the bottle