Switched coil packs?Rough idle!
.Thanks, Dave
However, no matter what cam you have, it should smooth out at some rpm and not miss, jump, or stumble.
If it does, I would check that your ignition wires are fully seated on both the coil and plugs ends, any broken plugs, etc.
As far as vacuum leak, put a gauge on it and see. High and steady needle should be at idle. Not knowing your cam, it alone could cause a low vacuum at idle.
Its usually the simple things that cause the majority of problems.
Good luck.


