ECMlink Low vacuum

[1twistdtalon]

Hey guys, I just got done with my rebuild and I'm getting very little vacuum like -2 to -4hg I know it should be lower. I have checked mechanical timing it's perfect, boost leak tested to 40psi no leaks. Idle is set at 950rpm. Base timing is *5 degrees, base idle and fuel pressure are all set. I can't get my profile to update so here is the quick recap of what I'm running.

BC 280 cams
Manley 10:5:1 Pistons
Fidenza timing gears
Autometer mechanical gauge off its own tap into the intake
Magnus race intake mani

The car runs great and builds boost fine but at idle the vacuum is very low. The car has 200 miles on the rebuild so far. The only things I can think of is

my exhaust cam needs adjusted and I'm getting to much overlap.

Or my gauge is malfunctioning..

Any help would be great.

 

[1twistdtalon]

I have a few videos of the car running if anyone's interested I can send the via email or text. The stock gauge (I know is inaccurate) also reads about -5hg @ 950 rpm.

 

[eclipsyco]

The higher the Cam profile the lower the HG will be at idle, and also you are idling pretty low for 280 cams.

 

[1twistdtalon]

Should I be up around 1100 for idle? I understand that the bigger the cam profile the less vacuum you will have but it just seemed really low.