Manafold vacuum range?

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01-25-2014, 07:19 PM

Spillage

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Manifold vacuum range?

For a healthy 5.2, what manifold vacuum readings should I be seeing?
Considering mods in signature.

Idle
Acceleration (mild)
Acceleration (hard)
Cruise (65mph)
Deceleration

Thanks!

Last edited by Spillage; 01-25-2014 at 07:27 PM.

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01-25-2014, 09:40 PM

HeyYou

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around 20" at idle, tapering off to nuthin' at WOT. Alot depends on what you happen to be doing at the time. Engine load plays a big factor in manifold vacuum.

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01-26-2014, 10:00 PM

P1NKST@FF

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Your elevation will affect vacuum as well

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01-26-2014, 10:09 PM

Spillage

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Not much over sea level here.

20" at idle is what I'm getting.
WOT is low, but not zero (2" or 3").
And foot off the peddle deceleration pulls 25".

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01-26-2014, 10:13 PM

P1NKST@FF

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How old is your filter, if your still seeing vacuum at WOT she isn't breathing as deep as she could. Come to think of it with a stock air of my truck never got to zero, but my mustang with a cold air did at the time

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