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Normal Idle Vacuum for Cammed 5.3L?

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Old Nov 1, 2012 | 09:07 PM
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Default Normal Idle Vacuum for Cammed 5.3L?

What is a normal idle vacuum for a cammed 5.3L? My cam is 212/212 .561/.561 114 LSA, that's an overlap of -16 deg. It idles warm at 15-16 inHg at ~630 rpm, three different gauges say the same thing. I thought it was supposed to be a little higher. It has not been tuned for this cam yet.

I'm trying to figure out if I have a vacuum leak. Thanks!
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Old Nov 1, 2012 | 10:03 PM
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not a 5.3 but my 370 idles at about 5" lol
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