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EGR Valve

Discussion in 'The Garage' started by Corey 78K5, Jun 27, 2004.

  1. Corey 78K5

    Corey 78K5 1 ton status

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    Would a 76 C-20 with a 350 have one???????
    /forums/images/graemlins/dunno.gif /forums/images/graemlins/dunno.gif /forums/images/graemlins/dunno.gif /forums/images/graemlins/dunno.gif
     
  2. pauly383

    pauly383 Daddy383 Staff Member Moderator

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    Does the sticker with hose routing on your truck under the hood on the radiator cover thingy show one ? I thought it depended on GVWR of truck whether it had cats or not, but they still had egr , especially for Cali . I am gonna search myself , I am curious now /forums/images/graemlins/k5.gif
     
  3. Frogg89

    Frogg89 Registered Member

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    Just look on your intake manifold, I wouldnt think it has one, my 75 didnt!!

    Ken /forums/images/graemlins/k5.gif
     
  4. Corey 78K5

    Corey 78K5 1 ton status

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    There is no sticker on the radiator support or under the hood any where for that matter. The GVWR is listed at 7,500. From what I'm hearing the 1/2 tons had EGRS but not the 3/4 tons. I still want to know for sure.
     
  5. pauly383

    pauly383 Daddy383 Staff Member Moderator

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    Perhaps since you are in Cali, you could ask the "referee station" . I always heard that term when Hot Rod or some other mag was smogging a car . Doesn't California have those places to tell you what you need to pass ? /forums/images/graemlins/k5.gif
     
  6. Corey 78K5

    Corey 78K5 1 ton status

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    [ QUOTE ]
    Just look on your intake manifold,

    [/ QUOTE ]
    Well thats the problem. I'm not %100 sure that it is the right intake. Some one just threw in a junkyard motor to sell it so I'm not sure it has the correct intake. I have a fresh 350 to put in it I just need to make sure the intake is correct or not. BTW the intake thats on it now is a NON EGR intake.
     
  7. Corey 78K5

    Corey 78K5 1 ton status

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    Hell I have no ideal /forums/images/graemlins/dunno.gif I haven't had to get a smog test done in like 12 years. I live where You only need to smog a vehicle when You first put license on a vehicle. The only vehicles I have bought in the last 12 years were from dealers and the always took care of it for Me.
     
  8. pauly383

    pauly383 Daddy383 Staff Member Moderator

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    So do you need to know just to know, or are you trying to license said truck ?

    I am still gonna find out somehow as I like to know as much as I can find out /forums/images/graemlins/k5.gif
     
  9. Corey 78K5

    Corey 78K5 1 ton status

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    I still need to know so that I can get it licensed. I bought the truck about 6 months ago and have a new 350 to put in it.
     
  10. pauly383

    pauly383 Daddy383 Staff Member Moderator

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    So far I found a PDF file with factory numbers listed for EGR valves. I see 305's in those years would have one , actually listed a C20 with a 305. I did not see a C20 listed as a 350 with EGR. I will look some more, I love searching for this stuff /forums/images/graemlins/k5.gif
     
  11. Corey 78K5

    Corey 78K5 1 ton status

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    Where do You find this stuff? I sure would like to be able to get a compleat schematic for the smog/vacuume diagram.
     
  12. pauly383

    pauly383 Daddy383 Staff Member Moderator

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    [ QUOTE ]
    Where do You find this stuff?

    [/ QUOTE ]

    Just do searches on various internet search sites . Google is most popular , but there are alternatives out there , like www.metacrawler.com, which has way less ads on it and after typing in what you want has a side bar to refine your searches based on what you typed, like if you search for chevy truck, it knows to show parts and forums etc as refined search options /forums/images/graemlins/k5.gif
     
  13. diesel4me

    diesel4me 1 ton status Premium Member

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    The 1978 400 small block in my plow truck was from a 1978 suburban K10--it has no egr factory,the suburban was listed on the sticker at the radiator support as"non-catalyst",GVW was 6000 lbs.First one I'd seen that late in the 70's,especially in a half ton truck,that had no egr valve.The suburban was all original,the manifold is a quadrajet spread bore cast iron one,looks same as the pre 1972 ones W/O egr. You may be able to look up the intake manifold number online. /forums/images/graemlins/crazy.gif
     
  14. pauly383

    pauly383 Daddy383 Staff Member Moderator

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    Did that manifold had hot air choke though ? The early 70's ones had divorced choke if I remember right /forums/images/graemlins/k5.gif
     
  15. diesel4me

    diesel4me 1 ton status Premium Member

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    I ditched the quadrajet in favor of a carter AFB I got at a swap meet for 15 bucks,and I used the required adaptor to fit the stock manifold--I gave the carb to a friend last year,I dont recall for sure but I think it had electric choke--I dont recall the manifold having the hot air tube setup-I'll have to look at it tomorrow!. /forums/images/graemlins/doah.gif
     

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