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#1 |
Registered User
Join Date: Oct 2009
Location: Downey, CA
Posts: 110
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Ok guys I`m new on this forum and by far the best source for C10 owners. Big thumbs up for everybody on here for their input. Enough of the sweet talk hehehe...
Just recently purchased a 1977 C10 LWB. Had numerous short beds before but just wanted to do something different with the LWB. Anyway, built numerous cars before, "Ricerockets", but never dealt with smog crap before. The whole truck is bone stock with original 96K miles on her. All the smog crap (smog pump, vacuum lines, smog lines that go to the headers) are still on the truck. I purchased some hooker headers which I`d like to install and get rid of the smog stuff mentioned above. Once I disconnect all of it, install the headers how bad is my timing going to be and how bad is the carb gonna need to be adjusted? I know I need to get a shorter belt which brings me to another question, what size belt? Any info will be greatly appreciated. Thx guys. |
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#2 |
Registered User
Join Date: Aug 2009
Location: Oregon
Posts: 611
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Re: Smog Question
Honestly I haven't had time to check the timing or tune of my '79, but from what I can see, somebody just pulled off all the smog crap and crimped the lines into the exhaust manifold. Looks like crap but seems to work ok.
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#3 |
Registered User
Join Date: Oct 2009
Location: Downey, CA
Posts: 110
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Re: Smog Question
So in other words the timing wont be off as bad as other people have been telling me and the carb wont need that big of an adjustment. Thank you sir.
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#4 |
Registered User
Join Date: May 2009
Location: Sparks, NV
Posts: 913
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Re: Smog Question
i just yesterday removed all my smog stuff and rebuilt my carb, i haven't adjusted my timing yet, but it doesn't seem to be very far off. just make sure you plug everything not being used, and it should be ok.
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Greg 1974 GMC 1/2 Ton SWB Fleetside L33 5.3/4l65e .................__
............._____l __\__ ..............l_(O)_ l___(O)] |
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#5 | |
Registered User
Join Date: May 2009
Location: Sparks, NV
Posts: 913
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Re: Smog Question
Quote:
__________________
Greg 1974 GMC 1/2 Ton SWB Fleetside L33 5.3/4l65e .................__
............._____l __\__ ..............l_(O)_ l___(O)] |
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#6 |
Registered User
Join Date: Oct 2009
Location: Downey, CA
Posts: 110
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Re: Smog Question
Thx for the info. I`m gonna throw those headers on this saturday and see what happens. Thx again.
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#7 |
Registered User
Join Date: May 2009
Location: Sparks, NV
Posts: 913
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Re: Smog Question
take a piece or string and wrap it around the crank, water pump, and alternator just like a belt. then make sure it's tight, and tape the ends together. then when you go down to the auto parts store you can say i need a belt this size
![]() that's what i did anyway.
__________________
Greg 1974 GMC 1/2 Ton SWB Fleetside L33 5.3/4l65e .................__
............._____l __\__ ..............l_(O)_ l___(O)] |
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#8 | |
Registered User
Join Date: Aug 2009
Location: Oregon
Posts: 611
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Re: Smog Question
Quote:
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#9 | |
Registered User
Join Date: Oct 2009
Location: Downey, CA
Posts: 110
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Re: Smog Question
Quote:
Thx again. |
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#10 | |
Registered User
Join Date: May 2009
Location: Sparks, NV
Posts: 913
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Re: Smog Question
Quote:
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__________________
Greg 1974 GMC 1/2 Ton SWB Fleetside L33 5.3/4l65e .................__
............._____l __\__ ..............l_(O)_ l___(O)] |
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#11 |
Registered User
Join Date: Oct 2003
Location: OC CA
Posts: 1,374
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Re: Smog Question
Your 77, depending on the county (Livermore is in Alameda) is still subject to bi-annual smog checks. Before removing your smog equipment and installing non CARB certified headers I would seriously look into the headaches involving bi-annual smog checks.
//RF
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"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) |
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#12 | |
Registered User
Join Date: May 2009
Location: Sparks, NV
Posts: 913
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Re: Smog Question
Quote:
![]() i'm swapping a registered 74 cab into my 79. *poof* no more smog ![]()
__________________
Greg 1974 GMC 1/2 Ton SWB Fleetside L33 5.3/4l65e .................__
............._____l __\__ ..............l_(O)_ l___(O)] |
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#13 |
Registered User
Join Date: Aug 2009
Location: Oregon
Posts: 611
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Re: Smog Question
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#14 |
Registered User
Join Date: May 2009
Location: Sparks, NV
Posts: 913
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Re: Smog Question
i guess great minds think alike
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__________________
Greg 1974 GMC 1/2 Ton SWB Fleetside L33 5.3/4l65e .................__
............._____l __\__ ..............l_(O)_ l___(O)] |
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#15 |
Registered User
Join Date: Oct 2009
Location: Downey, CA
Posts: 110
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Re: Smog Question
Yeah I gotta wait 2 more years before my truck becomes smog exempt. Until then we make it unsmogable, if thats even a word hehehehe and take it to a "friend" every year to get it smogged hehehe.
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#16 |
Registered User
Join Date: May 2009
Location: Sparks, NV
Posts: 913
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Re: Smog Question
the law in california is that vehicles made in 1975 or older are smog exempt, anything 76 and newer needs smog. when i bought my truck, i was under the impression that in 2009 it would hit the 30 year mark and taken off the smog list...found that not to be the case though....
__________________
Greg 1974 GMC 1/2 Ton SWB Fleetside L33 5.3/4l65e .................__
............._____l __\__ ..............l_(O)_ l___(O)] |
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#17 |
Cruzzzn' Vet
Join Date: Jan 2005
Location: Porterville,Ca.
Posts: 1,918
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Re: Smog Question
Before making any mods save yourself some headaches and double check the smog laws, heard that 30 yr rule is out the window
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#18 |
Registered User
Join Date: Jan 2009
Location: South Bay, Ca
Posts: 36
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Re: Smog Question
Smog exemption stopped at 1975. I've got a 1977 c20 and was forced to find a set CARB headers because of biannual inspection
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