How much Vacuum?

[93TT]

Hey guys,

New member, first post. I have a brand new DSS 331 with GT40 irons, E303 cam, Cobra upper and lower and the Incon 800TTi kit. I just fired the motor for the first time this past weekend and I am having a really bad stumble / poor idle problem. I have been reading a bunch of posts about this but I figured I should start my own with my own questions!

So here goes:

1. My boost / vac meter is saying roughly 10 inches of vacuum at at idle and drops lower when I rev it? Is 10 correct?

2. I have played with the timing quite a bit but it seems to not improve anything. I have set it @ 6 degrees BTDC (recommeded by mfctr). Now my question is can the distributor be installed wrong? What I mean to say is that it is all releative position correct? As long as #1 cyl is @ TDC (compression stroke) and my pointer is pointing @ #1 in the distributor I should be good to go REGARDLESS of position of distributor? correct?

Thanks in advance!