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11-27-2017, 01:05 PM
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#1 |
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Registered User
Join Date: Nov 2017
Location: H, Q
Posts: 180
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87 gmc truck, plugged
Hi, just got my truck back from restoration. I found the (emission) system plugged at both side of the engine with hoses and spark plugs. How can I rectify it.
Thanks Picture attached
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1972 GMC Sierra C2500, V8-350 1986 GMC Sierra C2500, V8-454 1986 GMC Sierra C2500, V8-LS1 1986 GMC Sierra K2500, V8-350 1987 GMC Sierra R3500, V8-454 1997 GMC Sierra K2500, V8-454 |
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11-28-2017, 05:02 PM
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#2 |
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Registered User
 Join Date: Jun 2016
Location: Phoenix, AZ
Posts: 574
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Re: 87 gmc truck, plugged
Are you asking how to fix that?
A) If emissions are not a concern, remove and plug holes in manifold. B) If emissions are a concern, source stock replacement parts of smog pump, diverter valve and all related plumbing and hook it all up.
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87 R30 CC Dually, TBI 454, NV4500, zero rust barn find 87 Jeep Grand Wagoneer, 6.5 turbodiesel, 700R4 |
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11-28-2017, 05:53 PM
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#3 | |
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Registered User
Join Date: Nov 2017
Location: H, Q
Posts: 180
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Re: 87 gmc truck, plugged
Quote:
Emissions are not a concern, I will do that, Do you know the bolt size to fit the holes in the manifold?
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1972 GMC Sierra C2500, V8-350 1986 GMC Sierra C2500, V8-454 1986 GMC Sierra C2500, V8-LS1 1986 GMC Sierra K2500, V8-350 1987 GMC Sierra R3500, V8-454 1997 GMC Sierra K2500, V8-454 |
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11-28-2017, 07:26 PM
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#4 |
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Robert Olson Transport
 
Join Date: Oct 2002
Location: recent transplant to NC USA
Posts: 20,310
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Re: 87 gmc truck, plugged
take out the tubes and bring it to home depot or lowes they can set you up with plugs that will fit in there im not sure of the exact size
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Bob 1951 International running on a squarebody chassis "If a man's worth is judged by the people he associates himself with, then i am the richest man in the world knowing some of the fine people of this board" http://67-72chevytrucks.com/vboard/a...t.php?f=25&a=9 (you can review the site rules here!) PM Me for your vehicle/parts hauling needs in the North East US or see my Facebook page Robert Olson Transport Live each day to the fullest.. you never know when fate is going to pull the rug out from under you... I hate cancer!! |
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11-29-2017, 11:49 AM
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#5 |
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Registered User
Join Date: Jul 2017
Location: OKC, OK
Posts: 247
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Re: 87 gmc truck, plugged
I'm thinking Home Depot or Lowe's isn't an option for OP...
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11-29-2017, 12:31 PM
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#6 | |
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Registered User
Join Date: Nov 2017
Location: H, Q
Posts: 180
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Re: 87 gmc truck, plugged
Quote:
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1972 GMC Sierra C2500, V8-350 1986 GMC Sierra C2500, V8-454 1986 GMC Sierra C2500, V8-LS1 1986 GMC Sierra K2500, V8-350 1987 GMC Sierra R3500, V8-454 1997 GMC Sierra K2500, V8-454 |
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11-29-2017, 10:04 PM
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#7 |
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Registered User
Join Date: Dec 2008
Location: Clover, SC
Posts: 55
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Re: 87 gmc truck, plugged
I think you will need a "pipe thread" plug for that. Maybe 1/4 NPT. At one time, most parts stores kept the various size brass plugs in stock just for that purpose. Since now it is considered emissions tampering, they have gone the way of "test pipes" for catalytic converters. Should be able to source them from a plumbing supply store. Try to find brass as it is preferred over steel. If you have to use steel, use plenty of anti seize on the threads.
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