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Engine vacuum question

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Old Jun 6, 2015 | 07:03 AM
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Default Engine vacuum question

Took a reading of my 6.0 vaccum at idle. Came back at -11 to -12 psi. Is this normal for a cammed engine? Cam isn't huge, 230-236 .581 .581 @ 114. Afr 225s. Rest of the mods in my sig
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Old Jun 6, 2015 | 07:20 AM
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I have a gauge for that
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You sure it wasnt measured in inches of mercury?
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Old Jun 6, 2015 | 07:37 AM
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I would say that's about right for that cam and a 6.0 assuming you meant " Mercury.
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Old Jun 6, 2015 | 08:59 AM
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Ha, yeah inches mercury. And thanks. Finishing up my parts pile to boost it. A hurt engine would be a setback I don't need.
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Old Jun 6, 2015 | 09:31 AM
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That's around where mine is at on a 228/236 .630/.635 114 LSA 110 ICL
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Old Jun 6, 2015 | 10:21 AM
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I have a 217/229 114lsa and I see around 15.5"
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Old Jun 6, 2015 | 02:22 PM
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Overlap:
230/236 114....+5*
228/236 114....+4*
217/229 114....-5*
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Old Jun 6, 2015 | 02:23 PM
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Originally Posted by DrX
Overlap:
230/236 114....+5*
228/236 114....+4*
217/229 114....-5*
Yep...
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Old Jun 7, 2015 | 01:20 AM
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with my GT2-3 I see about 17 in vacuum at idle...thats on a 118.5 LSA
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Old Jun 7, 2015 | 09:46 AM
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all depends on how the truck is tuned for idle

small adjustments can make ya idle at -8" or -14" all depends on setup and how much you make the cam chop
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