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

hose question...

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Old Mar 21, 2009 | 11:08 PM
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Default hose question...

what is the hose that connects from the passenger side valve cover to the throttle body? mines is hard and cracked so i think its time to replace it. i think its some kind of vaccum hose maybe? also need to know the name of the small hose thats directly under that one on the throttle body.. this is on a 93 z also...
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Old Mar 21, 2009 | 11:16 PM
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id say that hose is for your pcv valve while ur at it buy a new pcv valve and replace the hose any hose will do....and the one under it...i have to look at mine i let you know unless someone else posts up
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Old Mar 22, 2009 | 01:01 AM
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The hose from the valve cover to TB is for crankcase ventilation. Technically it is a vacuum hose, but I wouldn't call it one. It's one part of the PCV system.

The hose under it goes to the EVAP solenoid.
I have both those hoses which I'm not using anymore. I could check if they are in good condition if your interested.
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Old Mar 22, 2009 | 08:50 AM
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It's called a PCV hose, but it does not go to the PCV valve.

GM PART # 10128365

The other hose is the Evaporative Emissions canister purge solenoid valve pipe.

GM PART # 10105324

http://shbox.com/1/1995_evap.jpg
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