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02-15-2021, 03:54 PM | #1 |
Registered User
Join Date: May 2017
Location: Gilbert, AZ
Posts: 33
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250 Inline 6 - Offenhouser Intake Questions
Hoping someone can help me out with my new setup on my Inline 6 250 engine. Im adding the Offenhouser Intake and I cannot figure out what do with the two holes on the back of the intake?
I know it is not for Water as the Heat Plate is on the bottom which I have that covered. Just not sure what to do with these two holes pictured. |
02-15-2021, 04:05 PM | #2 |
Registered User
Join Date: Aug 2006
Location: LaSalle Mi
Posts: 525
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Re: 250 Inline 6 - Offenhouser Intake Questions
Vacuum ports?
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02-15-2021, 04:57 PM | #3 |
Carpe manana
Join Date: Dec 2010
Location: Eau Claire, WI
Posts: 12,451
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Re: 250 Inline 6 - Offenhouser Intake Questions
Bump to engine and drivetrain
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02-15-2021, 05:40 PM | #4 |
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Join Date: Aug 2012
Location: Oklahoma City, OK
Posts: 2,629
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Re: 250 Inline 6 - Offenhouser Intake Questions
2nd the vacuum port thought. If you don't need them, plug them.
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02-17-2021, 03:45 AM | #5 |
Registered User
Join Date: Jan 2013
Location: Calgary Alberta
Posts: 1,170
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Re: 250 Inline 6 - Offenhouser Intake Questions
Brake booster, PCV?
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02-17-2021, 08:07 PM | #6 |
Senior Member
Join Date: Dec 2011
Location: Moraga, CA
Posts: 812
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Re: 250 Inline 6 - Offenhouser Intake Questions
Or they may me to make it compatible with a later model that needed a temperature sensor or temperature activated vacuum switch for emissions.
And like the other guys have said... If you don't need them, plug. BTW, it's really good looking manifold.
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