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Old Nov 7, 2011 | 02:41 PM
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Default stock vacuum

What is the stock vacuum on a 6.0L?
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Old Nov 7, 2011 | 08:03 PM
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i believe 18-22 would be an acceptable range at idle....
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Old Nov 14, 2011 | 03:50 PM
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hmm, Looks like Im getting 10" at idle. Is that common with a cam?
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Old Nov 14, 2011 | 03:58 PM
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Yes you can expect less vacuum with an aftermarket cam.
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Old Nov 14, 2011 | 09:17 PM
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you will see less vac with the a/c on also
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Old Nov 14, 2011 | 09:25 PM
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Originally Posted by smokeshow
Yes you can expect less vacuum with an aftermarket cam.
yup! that's why some go to hydroboost..
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Old Nov 14, 2011 | 10:07 PM
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already did the hydroboost swap. I can only imagine how the vacuum brakes would be with half the stock vacuum lol
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Old Nov 16, 2011 | 12:59 AM
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our Tahoe with 5.3 idles around 35kPA, my cammed LQ4 is closer to 55kPA though.
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