Milzy Stage 1 Cam Owners

[moonwell]

What are you guys showing for vacuum at idle with a stage 1 cammed 3400?

I'm seeing 12hg, fluttering between 11-13hg. I'm trying to determine if this is normal for this cam (seems low given the cam specs), since I'm having some other drivability issues, even though it idles decent.

If you've got this cam & could check your idle vacuum for me, it would be much appreciated!

[geoffinbc]

Wow that is low. But for that cam it is what I thought it might be. Is has a narrow LSA (too narrow for my taste) so lots of overlap means low vacuum.

[SappySE107]

oh fun! Ive tuned 13 but it was pushing it for sure. That would go well with decel being screwed to hell.

[TurboZ24]

I was going to say, that's not that far off what I run for idle vacuum, but I do idle mine at 1000 rpm, which is 11 inches of vacuum and my LSA is 114.

[bszopi]

I think I was running around 12-13 in with my regrind.

[geoffinbc]

Oh yea dont forget altitude makes a big difference too. The higher you are the lower the vacuum.

My stock Camaro cam with 1.6 rockers idles at a healthy 18" of vacuum.

[moonwell]

I would always have about 20hg before the cam.

Also, I know the fluttering is normally bad, but figured this might be normal with a cam like this. Is that true?

[geoffinbc]

Yes it is normal. You may also be noticing a slight lope. The 2 symptoms go together.

[torq455]

i would figure that much of a vac drop with the stageII cam.

[AaronGTR]

Stock I got about 18-20hg. I get about 14hg at idle with my stage1 boost cam so thats normal. My LSA is a little bigger. I had to increase the idle a touch to get it to idle smoothly though.