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**Wrenchbender Ret** · 02-03-2018, 11:03 PM

I'm thinking it is a vacuum outlet. With the intake built into the head it must have a passage to the intake. Pull the hose off & start the engine. You will find out what is beyond it.

02-03-2018, 11:03 PM	#3
Wrenchbender Ret Registered User Join Date: Oct 2005 Location: Overland Park, Ks. Posts: 5,190	Re: 79 250, what is this fitting? I'm thinking it is a vacuum outlet. With the intake built into the head it must have a passage to the intake. Pull the hose off & start the engine. You will find out what is beyond it.