383 rough idle very low vacuum

[josephqatarcarguy]

Hey , my superbee which should have a mostly stock 383 engine has a rough idle and dies in gear . The engine is stock except edelbrock aluminium heads , firecore distributor and ecu , edelbrock avs2 650cfm carb , it has really low vacuum 5 ..6 .. I can get it to idle but the engine js vibrates alot , the idle mixture screws do nothing if adjusted , can turn it all the way in and the engine still runs , vacuum leak ? Timing is at 14 initial

What should I check?

Thanks guys

 

[pnora]

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