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11-02-2012, 09:02 AM
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#1 |
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Registered User
Join Date: Jul 2012
Location: OMAHA, NE
Posts: 47
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Emissions Delete, What is this ???
I am removing my emissions stuff on my 84 K10 with a 78 5.7L 350 motor in it. Can anybody tell me what this part is and do I need it? If not should I just cap off the vacuum ports? It sits back on the manifold in front of the dist.
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11-02-2012, 09:10 AM
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#2 |
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Account Suspended
Join Date: Oct 2012
Location: phx, az
Posts: 868
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Re: Emissions Delete, What is this ???
its just a dual port fitting nothign else
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11-02-2012, 09:17 AM
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#3 |
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Registered User
Join Date: May 2012
Location: Colo Springs, CO
Posts: 870
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Re: Emissions Delete, What is this ???
Isn't that a coolant temp sensor too?
__________________
- Jeff 89' K5 Blazer, 2.5" lift, 35" tires  04' GMC Yukon XL, 3/4 ton, 8.1L |
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11-02-2012, 10:09 AM
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#4 |
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Slots go on anything!
Join Date: May 2003
Location: Richardson, TX
Posts: 5,957
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Re: Emissions Delete, What is this ???
There is a thermal vacuum switch on some trucks, but it usually is in the thermostat housing. If that is behind the carb, it is just a vacuum fitting. One port should have gone to the vacuum modulator on the transmision. If you don't need it, either replace it with a plug or cap them off.
__________________
1974 Jimmy- 5.3/4L80e/NP241 |
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11-02-2012, 10:09 AM
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#5 |
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Registered User
Join Date: Mar 2012
Location: edgartown mass
Posts: 852
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Re: Emissions Delete, What is this ???
i think some where but i dont think that one is. see no place for pig tails. think chevy did a duel perpose but not sure
__________________
1986 c20 "the hillbilly" 350 sm465 3.42gears 21mpg at 70mph 1985 k30 "the ice cream truck from hell" no rust az truck 197-8??? c30 "ramp truck" 454 1978 monte carlo 350 350th with 2.73 gears. no rust. sc car |
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11-02-2012, 11:40 AM
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#6 |
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Registered User
Join Date: Jul 2012
Location: OMAHA, NE
Posts: 47
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Re: Emissions Delete, What is this ???
I have the 700R4 tranny so it doesn't have a modulator. So I should just be able to cap it off. Thanks guys!!!
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11-02-2012, 03:21 PM
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#7 |
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Watch out for your cornhole !
 
Join Date: Jun 2003
Location: Azle, Texas
Posts: 14,162
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Re: Emissions Delete, What is this ???
Don't just cap it off. Get a 1/4 NPT plug and do it right by removing the whole thing. No sense adding any place where future vacuum leaks could occur if the cap falls off.
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11-03-2012, 12:31 AM
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#8 |
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Gettin It One Pice At A Time
Join Date: Oct 2004
Location: everett, washington
Posts: 2,688
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Re: Emissions Delete, What is this ???
The top goes to the trans, the other either goes to the vacuum ball for your heating system, or to the cruise control. On mine I have a cross fitting, one for all three.
__________________
RIP ELJAY   Work In Progress 1979 GMC C1500 Trailering Special. Getting the truck done, one piece at a time. “You can tell a lot about a fellow’s character by his way of eating jellybeans.”Ronald Reagan “I don’t know the key to success but I know the key to failure is trying to please everybody.” Bill Cosby |
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