Hey guys I am trying to set up a rebuilt holley 600 cfm with vac secondaries. Having some troubles. I havnt messed with holleys before but i want to get this one dials nicely. I have a 292 bored .060 with the isky e303 4444 cam. headers with glasspacks and 4 speed amnual trans. Vacuum is pretty low at idle with the cam. also have john mummert aluminum intake, My question is about car set up.
• what power valve?
• what jets and metering blocks?
• squirter size?

Anything else I need to know. I am trying to run manifold vacuum too.