Summit cam 6900 engine vacuum?

[rustytoolss]

Anyone using Summits 6900 cam kit ? if so, how much vacuum is your engine pulling ? my 273 is pulling like 14" at idle, and around 10-11 in gear.

 

[67Dart273]

No clue. What did you do about the advance curve and initial timing?

 

[rustytoolss]

I've got a mopar performance electronic distributor that has the adjustable vacuum advance. As for the timing , I'm at 12*

 

[RustyRatRod]

Not enough initial.

 

[rustytoolss]

Not enough initial.

So were should I be at , for a daily street driven engine ? With out having a hard start problems ?

 

[TrailBeast]

So were should I be at , for a daily street driven engine ? With out having a hard start problems ?

My understanding is that you want as much as you can get without starter kickback, so you pretty much have to get it good and warm and see where that is.
I left my distributor just a bit loose so I could move it by hand for testing.

 

[cdavis]

I would adjust the timing and idle speed until you get the highest vacuum reading. I wouldn't think you would need too much more than you have now.

 

[67Dart273]

Unhook vacuum advance, readjust idle speed to keep it "in reason" and adjust timing for max vaccum. Then check it does not "kick" the starter