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10-18-2011, 01:39 PM
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#1 |
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Registered User
Join Date: Oct 2011
Location: Houston
Posts: 3
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Exhaust Question
I have a 350 in my 69 GMC (after market motor 74') On my exhaust manifold (driver side) there is a lever. Does anyone know what the lever is called and what it is for? It appears to adjust the exhaust flow..
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10-18-2011, 01:46 PM
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#2 |
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-Chris
 
Join Date: Sep 2002
Location: Moyock, NC
Posts: 622
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Re: Exhaust Question
A lever? Im not familiar with exhaust manifolds too much as I've always had full length headers. Do you have a photo by chance? Im curious to see if this "lever" is at the front of the manifold by the #1 cylinder. I've seen some guys use newer model manifolds and cut and smash the end of the O2 sensor instead of removing it and plugging the hole. Its alwasy looked like a lever to me when I've seen them do that.
Im sure someone on here will be able to help you out. |
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10-18-2011, 01:50 PM
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#3 |
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Senior Member
Join Date: Mar 2003
Location: Colfax-California
Posts: 8,630
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Re: Exhaust Question
The "lever" manifold should be on the right hand side of the engine. It is a 'thermostat' so to speak, it closes when cold allowing exhaust to back flow a little up through the intake manifold to help with heating up the carb to help reduce emissions. More often called a heat riser valve
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10-18-2011, 02:07 PM
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#4 |
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~Rest In Peace~
Join Date: May 2005
Location: CALIFORNIA NOR CAL
Posts: 9,707
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Re: Exhaust Question
heat riser ==ex wife both have been removed
__________________
is it fast ? it has a lighting bolt donut? B___H please, I can remove 90% of your so called "beauty" with a kleenex |
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10-19-2011, 10:44 AM
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#5 |
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Registered User
Join Date: Oct 2011
Location: Houston
Posts: 3
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Re: Exhaust Question
Thanks ya'll.
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