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.

Re: 250 Inline 6 - Offenhouser Intake Questions
 

Vacuum ports?

Re: 250 Inline 6 - Offenhouser Intake Questions
 

Bump to engine and drivetrain

Re: 250 Inline 6 - Offenhouser Intake Questions
 

2nd the vacuum port thought. If you don't need them, plug them.

Re: 250 Inline 6 - Offenhouser Intake Questions
 

Brake booster, PCV?

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.