CA smog legal headers - The 1947 - Present Chevrolet & GMC Truck Message Board Network

gramps77 · 02-13-2012, 11:47 PM

Are there any headers available that dont need the tube welded in for the smog pump and maybe already come with it? My 77 Heavy Half ton doesnt require ALL the smog stuff (IE catalytic convertor) but must retain the smog pump. Any ideas?

Mccoleman830 · 02-14-2012, 12:17 AM

Quote:

Originally Posted by gramps77

Are there any headers available that dont need the tube welded in for the smog pump and maybe already come with it? My 77 Heavy Half ton doesnt require ALL the smog stuff (IE catalytic convertor) but must retain the smog pump. Any ideas?

Try Hedman headers PN# 69231 or 69831. Both of these headers come smog legal for the c.a.r.b. These seem to be the only ones that I've found that are still available to be made, and are a decent price. Both will be a long tube design and not a shortie header like Edelbrocks discontinued header series. I've phoned Hedman headers a few days ago and it will take about 3 weeks to build these headers and ship to your door.

rfmaster · 02-14-2012, 12:36 PM

Funny you should mention Hedman. They offer several different version of CARB compliant headers, but expect long lead times as they tend to build to order! I ordered HED-69891 (CA) HEADERS from Summit at the beginning of January and still waiting for Headman to finish them.
//RF

gramps77 · 02-14-2012, 05:51 PM

no way around that ball and socket I guess. I never have had good luck with those.

INSIDIOUS '86 · 02-14-2012, 06:44 PM

Sawzall fixes the ball socket issue
Posted via Mobile Device

kevinr1970 · 02-14-2012, 09:09 PM

I bought some reasonably cheap ones off Summit (or was it Jegs???) for my '87 crew no more than a year or so ago.
They have pretty thin flanges, and the place for the smog tubes to attach is in a different location than what is stock, but they worked.

I ordered the Edelbrock headers, but had to return them as they flat would not work for me, although I don't remember specificaly why?
I have a case of "sometimers"...

djunkie · 02-18-2012, 05:27 PM

I've got the Hedman shorties and y-pipe setup on mine that have the smog injection tubes welded in. Having a hell of a time getting them to seal up. I think the flanges are tweaked or something. Gonna double up the header gaskets and use some high temp rtv to see if it'll work.
Posted via Mobile Device

02-13-2012, 11:47 PM	#1
gramps77 Registered User Join Date: Oct 2011 Location: Plumas Lake, CA Posts: 386	CA smog legal headers Are there any headers available that dont need the tube welded in for the smog pump and maybe already come with it? My 77 Heavy Half ton doesnt require ALL the smog stuff (IE catalytic convertor) but must retain the smog pump. Any ideas?

02-14-2012, 12:36 PM	#3
rfmaster Registered User Join Date: Oct 2003 Location: OC CA Posts: 1,374	Re: CA smog legal headers Funny you should mention Hedman. They offer several different version of CARB compliant headers, but expect long lead times as they tend to build to order! I ordered HED-69891 (CA) HEADERS from Summit at the beginning of January and still waiting for Headman to finish them. //RF __________________ "The Beast" 1975 Chevrolet C20 longbed 350/700R4! with 3inch body lift Dual Flowmasters Super 40's! TBI retrofit completed (2007-07-29) New 383CID (+030) 08-304-8 9.5:1CR x36,005 (2012-12-17)

02-14-2012, 05:51 PM	#4
gramps77 Registered User Join Date: Oct 2011 Location: Plumas Lake, CA Posts: 386	Re: CA smog legal headers no way around that ball and socket I guess. I never have had good luck with those.

02-14-2012, 06:44 PM	#5
INSIDIOUS '86 Registered User Join Date: Jul 2009 Location: washington Posts: 4,178	Re: CA smog legal headers Sawzall fixes the ball socket issue Posted via Mobile Device __________________ 377 sbc thumpr cam autogear m23 muncie 3:73 Detroit trutrac 3''spintech prostreet mufflers xpipe 1 3/4 headers build thread !http://67-72chevytrucks.com/vboard/s...d.php?t=577217 Iroc gauge threadhttp://67-72chevytrucks.com/vboard/s...d.php?t=554511

02-14-2012, 09:09 PM	#6
kevinr1970 Senior Member Join Date: Aug 2004 Location: Everett, WA Posts: 2,316	Re: CA smog legal headers I bought some reasonably cheap ones off Summit (or was it Jegs???) for my '87 crew no more than a year or so ago. They have pretty thin flanges, and the place for the smog tubes to attach is in a different location than what is stock, but they worked. I ordered the Edelbrock headers, but had to return them as they flat would not work for me, although I don't remember specificaly why? I have a case of "sometimers"... __________________ 2009 Honda Fit CfC (bsf 44.9 mpg) 2000 Tahoe Limited 1991 GMC CrewCab Dually 2wd, will end up swb, not dually and replace CCswb below 1991 GMC CrewCab Dually 4x4, just going to fix things up for now 1982/1989 K5/GMC Jimmy 2wd 1987 GMC 1/2 ton swb 2wd Crew (sold)

02-18-2012, 05:27 PM	#7
djunkie Registered User Join Date: May 2011 Location: Lomita. Ca. Posts: 127	Re: CA smog legal headers I've got the Hedman shorties and y-pipe setup on mine that have the smog injection tubes welded in. Having a hell of a time getting them to seal up. I think the flanges are tweaked or something. Gonna double up the header gaskets and use some high temp rtv to see if it'll work. Posted via Mobile Device

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