LT1-LT4 Modifications 1993-97 Gen II Small Block V8

What vacuum line can I tap into?

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Old 03-07-2010, 11:56 PM
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Default What vacuum line can I tap into?

I want to add a device that runs off of vacuum so I need to tap into a vacuum line but I want to know what line I can tap into without messing up the engine or any values. Thanks
Old 03-08-2010, 12:04 AM
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tap into the vacuum line for the EGR. The very last port on the drivers side. This is the one stated in my instructions for when I did my vented opti conversion.
Old 03-08-2010, 12:10 AM
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Originally Posted by litch2004
tap into the vacuum line for the EGR. The very last port on the drivers side. This is the one stated in my instructions for when I did my vented opti conversion.
Thanks! So as the RPMs change so should the vacuum right?
Old 03-08-2010, 12:15 AM
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i would assume so. I do not no know to much on this part. But it would make sense. I know when my intake manifold rear seal busted i lost vacuum when I applied the brakes at low rpms. I had no issue at higher rpms. So yes i would say the vacuum increases with rpm range. Sorry for the long justification to my opinion.
Old 03-08-2010, 12:17 AM
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Originally Posted by litch2004
i would assume so. I do not no know to much on this part. But it would make sense. I know when my intake manifold rear seal busted i lost vacuum when I applied the brakes at low rpms. I had no issue at higher rpms. So yes i would say the vacuum increases with rpm range. Sorry for the long justification to my opinion.
Thank you once again! You answered my questions.
Old 03-08-2010, 12:19 AM
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No problem
Old 03-08-2010, 06:56 AM
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Originally Posted by 22lambo
Thanks! So as the RPMs change so should the vacuum right?
Since it is the RPM/load of the engine that creates the vacuum, then yes, it would change.



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