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04-28-2010, 07:51 PM
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Registered User
 
Join Date: Feb 2009
Location: Scottsdale, AZ
Posts: 390
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1980 K20, Smog pump?
Does anyone know for sure, or have a shop manual handy for lookup, that can tell me if a non CA K20 came with a smog pump and charcoal canister? I know they were excluded from having cats.
Just trying to prep myself before the dreaded trip to ADEQ. Thanks.
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-Don- '66  C10 w/factory A/C'77 Cheyenne K5 350/465/205 '80 Custom Deluxe K20 350/465/205'04 Denali XL '05 DMax CCLB 4x Have a Hickey Sidewinder Winch and need the owners/install manual? Send me a PM with your email address and I'll forward you a .pdf 
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04-28-2010, 10:48 PM
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#2 |
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Robert Olson Transport
 
Join Date: Oct 2002
Location: recent transplant to NC USA
Posts: 20,316
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Re: 1980 K20, Smog pump?
not100% sure but im reasonably sure that they did by then. Look t see if the manifolds have the plugs in em for the air tubes also alot of people just left the mount there for the air pump or at the very least the pulley on the waterpump for it
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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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04-28-2010, 11:07 PM
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#3 |
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Registered User
Join Date: Dec 2006
Location: SLC, UT
Posts: 706
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Re: 1980 K20, Smog pump?
Definitely had the canister, and most likely on the pump
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04-29-2010, 12:50 AM
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#4 |
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Registered User
Join Date: May 2007
Location: CO
Posts: 475
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Re: 1980 K20, Smog pump?
Does the emission sticker on the core support say high altitude emissions? I know those for sure had smog pumps.
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04-29-2010, 12:52 PM
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#5 |
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Registered User
Join Date: Feb 2009
Location: Scottsdale, AZ
Posts: 390
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Re: 1980 K20, Smog pump?
No sticker on the core support. Original engine was the I6, and now has a later 5.7. From the looks of the valve covers, I'd say it was early '90's.
__________________
-Don- '66 C10 w/factory A/C'77 Cheyenne K5 350/465/205 '80 Custom Deluxe K20 350/465/205'04 Denali XL '05 DMax CCLB 4x Have a Hickey Sidewinder Winch and need the owners/install manual? Send me a PM with your email address and I'll forward you a .pdf
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05-03-2010, 05:13 PM
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#6 |
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Registered User
Join Date: Feb 2009
Location: Scottsdale, AZ
Posts: 390
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Re: 1980 K20, Smog pump? (updated)
So, the Federal version 1980 K20/30 (non-California) does NOT have anything other than the standard PCV for those wondering. GM skirted the requirements one more year by upping the GCVW by 100 pounds to push them into a different requirement category. Not sure how many more years, if any, this continued.
77 was the last year for the half tons. None the less, the K20 failed. PO put a new Edlebrock on it, and it needs some tuning TLC.
__________________
-Don- '66 C10 w/factory A/C'77 Cheyenne K5 350/465/205 '80 Custom Deluxe K20 350/465/205'04 Denali XL '05 DMax CCLB 4x Have a Hickey Sidewinder Winch and need the owners/install manual? Send me a PM with your email address and I'll forward you a .pdf
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