Problem with Holley 4 bbl

Bewy said
Dart_68,
A lot of things are not adding up.....
Only 5" of idle vacuum, & you want it to idle at 700 rpm? I doubt that will happen.
If the low vacuum is from a long duration cam, hard to believe that both pri & sec t/blades are almost closed, because the engine should need a lot of bypass air for it to idle. The engine gets this air from opening the t/blades further, drilling t/blades, etc.
Do you know the cam specs & comp ratio?

Mine only idles at 6" with [email protected] on a 108. It WILL idle "around" 750, but it doesn't like it. It'll stall every once in a while coming to a stop. If I idle it right up around 1000, it likes that much better and never stalls. At that idle speed, my primary t slots are BARELY larger than square and I can close the secondaries all the way down until they stick shut. I have them adjusted now so they just barely will not stick.