WHERE DOES THIS HOOK UP TO??
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Posting Guru
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From: Georgia
WHERE DOES THIS HOOK UP TO??
This is my 460 big block. I think this is the crank case ventilation its on the left side valve cover, it was like that when i purchaced the motor. Is it supposed to be like that?
This is the thermostat housing. I took the old one off and replaced it with this one. The old one had something that looked like a vacuum switch or something. There wasnt anything hooked up to it so i plugged it off. Is that good or do i need to get what was on the old one. If so where do the lines go?
Thanks for any advice!
This is the thermostat housing. I took the old one off and replaced it with this one. The old one had something that looked like a vacuum switch or something. There wasnt anything hooked up to it so i plugged it off. Is that good or do i need to get what was on the old one. If so where do the lines go?
Thanks for any advice!
Post Fiend
Joined: Nov 2008
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From: McKenzie River
The PCV valve needs a hose to go to a large vacuum port underneath the carb, the fitting on the thermostat housing was from emissions controls that were probably long ago thrown away, no need to do anything.
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From: Georgia
Is it on the front left side of the carb.? I was told i have a 650 dominator, I know its a holley 4 barrel.
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From: Cave Spring Georgia
Post Fiend
Joined: Nov 2008
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From: McKenzie River
I would slap a breather on then: JEGS Chrome Valve Cover Breathers - JEGS
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MSEE
Joined: Apr 2004
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From: Austin, TX
The item in the old thermostat housing was a ported vacuum switch (PVS) which would have controlled the EGR system which you DO need unless you do heavy re-turning to compensate for its absence.
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Uhh, no.
PCV valve attaches to the carb base or manifold via a tube. The valve controls the flow, sucking fumes out of the motor.
The little filter in the aircleaner housing is for the air supply to go into the motor, usually at the oil fill cap. You can eliminate that with a filtered breather cap. Several options exist for that.
Positive Crankcase Ventilation (PCV)
oil breather filter | eBay
Moroso Breathers/Oil Filler Caps - JEGS
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Posting Guru
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From: Georgia
Ok, if I need the PVS where do the lines run to?
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Posting Guru
Joined: Jul 2012
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From: Georgia
I would slap a breather on then: JEGS Chrome Valve Cover Breathers - JEGS
Do they make them to fit with this opening? This is where the oil cap goes.
Lead Driver
Joined: Mar 2010
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From: West Virginia
its not a stock carb so its not gonna have all the same vaccuum locations in the same places as your stock carb.
I didn't know what a PVS was so I looked it up: What Is a Ported Vacuum Switch? | eHow.com
Sounds like it relates to the EGR system.
fmc400, why do you say he needs "heavy returning" to get rid of it??
I didn't know what a PVS was so I looked it up: What Is a Ported Vacuum Switch? | eHow.com
Sounds like it relates to the EGR system.
fmc400, why do you say he needs "heavy returning" to get rid of it??