Can a ZZ4 pass the CA smog test?

Discussion in 'California 2nd Genners' started by BayAreaCamaro, Mar 2, 2010.

  1. Is it possible for a ZZ4 to pass the dreadful CA smog test, considering all emission equipment is hooked up? I'm considering getting a ZZ4 for my Camaro to add some power but I'm worried about the smog test when the time comes. Technically it's not legal but I don't think the inspector will know any better if all smog equipment is hooked up to pass the visual test (unless they're smart enough to notice the center-bolt valve covers and aluminum heads).
     
  2. RaycerX81

    RaycerX81 Veteran Member

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    Dec 11, 2004
    Hayward, Ca.
    If all the stuff is put on I dont see why it wouldnt pass, but the sniffer might say something else. I have a 350 in my Z( the 305 blew up) my vavle cover say Goodwrench 350 on them, and the smog guys have never said anything.
     
  3. noobwrench

    noobwrench Veteran Member

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    Mar 11, 2009
    Lodi/Burson California
    My smog license expired a few years ago, but at that point in time, a ZZ4 was considered a gen 1 small block still, and was treated as a 1967 model year. You would still need a carb, and intake with a EO number and the stock air cleaner, as well as manifolds, air injection(if equipped), egr, and evap canister.

    I would say that 75% of smog techs are mildly retarded, and wouldn't catch it, and if they did, because of their ineptness and inability to determine legality, would likely referee it. Thats not saying all smog techs are bad though.

    At one point in time I smogged a ZZ4 in my 74, im not sure if it was actually legal or not though.
     
  4. ULTM8Z

    ULTM8Z Veteran Member

    8,070
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    May 19, 2000
    Los Angeles
    From a tailpipe emissions standpoint, a properly tuned ZZ4 would be much cleaner than a factory 2nd gen Camaro. I'm running EFI on my ZZ4 and have run it on my own gas analyzer and it was very clean (even before I put cats on it) though it's also EFI so it's not quite a fair comparison. But even before the EFI and ZZ4, when I was running my old small block with the 214°/224° cam, the smog legal AFR heads, and the RPM intake, I was producing literally only 1/3 the emissions I was allowed for the 1971 2bbl sport coupe Camaro.

    It's the visual you may have a hard time with if the inspector notices the center bolt rocker covers, the composite timing chain cover, and the aluminum heads. If your Camaro is earlier than '75, the HEI distributor would be a problem as well.

    Also, when he goes to check your ignition timing, he'll be staring right at that composite timing cover, which may prompt further investigation.
     
  5. Knuckle Dragger

    Knuckle Dragger Moderator Staff Member Lifetime Gold Member

    12,327
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    Nov 2, 2002
    Waddell AZ
    I call BS on that dude. You're back again under a new user name and the BS starts again. You're parts store manager, a mechanic, just waiting for your letter from the highway patrol, and God only knows what else you claimed under THIS user name. It changes every post depending on what you think will be cool I guess. Man, quit playing the board for fools please.

    To the OP, As far as the California smog program is concerned a small block is a small block. They go by engine family. A smog guy is not going to ship you off to the referee because you put a different small block in. He's not even going to care because it's a non issue. You be fine if you equip the car as it was equipped from the factory. PM me if I can be of any help. I worked as a California smog technician, and a very short stint with the dreaded Bureau of Automotive Repair. Don't let someone's fairy tails scare you out of building the car the right way.
     
  6. Kamikaze

    Kamikaze Veteran Member Lifetime Gold Member

    Here is what I can tell you from an install of a ZZ4 into a 75-75 car. It would not pass due to one simple mechanical problem.

    Even though the ZZ4 intake has an EGR valve mounting the cylinder heads do not have the central heat crossover port to allow the EGR system to work properly. In order to make the EGR system functional, you would have to create a modification such as the later model Vortec truck engines did with a exhaust gas port tapped into the passenger side manifold then to the intake. Really not worth the efforts since it would fail the visual.

    All the other mechanical aspects can be met but now the new Catalytic convertor headaches are creating more mis-informed techs and they are wrongly failing pre-OBDII cars for improper replacement catalytics...
     
  7. Knuckle Dragger

    Knuckle Dragger Moderator Staff Member Lifetime Gold Member

    12,327
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    Nov 2, 2002
    Waddell AZ
    I was unaware the z24 lacked the heat cross over in the heads. You are 100% correct it will fail for that. It fails for EGR and EFE. As far as I know the referee will not/can not pass it either. :(

    What's the deal with the cats?
     
  8. ULTM8Z

    ULTM8Z Veteran Member

    8,070
    3
    May 19, 2000
    Los Angeles
    Crap... I forgot about that.
     
  9. noobwrench

    noobwrench Veteran Member

    465
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    Mar 11, 2009
    Lodi/Burson California
    [​IMG]
    Is one of about 18 or so letters I have, I tested for CVIS commercial vehicle inspection specialist, which also covers Auto tech 1 and 2, Ive interviewed in person at 6 locations and I have 2 more that I will probably interview for. I tested rank 3 number 1 as you can see on the paper, not bad for not having any experience in trucks at all in a class of about 500 people.
    [​IMG]

    Is my 609, the only cert I have on me(was buying r12 for my 3rd "job" of side jobing AC), I have all 8 ASE's, but anyone that has them knows that they certify MINIMUM competency. I got my first one in 1998 when I was going to Los Medanos College, all have since expired. I originally wanted to go for computers and engineering, then leaned toward automotive. I have my AS and am a dropout. I am a graduate of the GM Automotive Service Education Program. I have my smog cert, took the clean air car course, never really paid attention as I knew I would never do a smog ever.

    I currently work at pep boys, i was hired as a replacement for the manager that was on long term disability, shes now back. So my job is all over the place, but I mostly help the shop with parts sourcing, help the commercial sales manager with outside purchasing, assemble and sell motorcycles, sometimes I install tires, sometimes I sell tires and repair work, sometimes I spend all day helping other people. The only thing I consistently do is put all 70-160 tires up every week.

    anyways im putting this on:
    [​IMG]
    so Its time for me to split. Aparently someone broke the new snap on scanner so I get to learn all about that boy now. Then its off the Oscars' to R+R some leaf springs on a 1988 c1500. Ill be back on about midnight I suppose if you want to continue this.

    Also why so abrasive? Come down and have a beer or something, im pretty easy to get along with...unless im driving lol.
     
  10. Knuckle Dragger

    Knuckle Dragger Moderator Staff Member Lifetime Gold Member

    12,327
    49
    Nov 2, 2002
    Waddell AZ

    Well you're busy guy, got your degree in engineering, manager as Pep Boys and a master technician. Posted all kinds of information except your smog license, your ASE certs. I still call BS

    You're a fill in Manager with hiring powers to hire your friend, right. BS I worked for Pep Boys back in 87-88. The hiring isn't quite that simple.

    So which is it, you have your degree or your going for your degree (and work two jobs)?

    And just exactly where did you get secret clearance. Do they require that at Pep Boys? You pulled the same crap when you posted that picture of your girl friend Jordi or what ever her name was. You got called and put up the huge front until the evidence was over whelming. I ain't buying it.

    Since you posted your name I decided to look it up on the smog technician license confirmation page, you don't show up...imagine that. BTW I know your next excuse , they show even if expired. ;)

    http://www.autorepair.ca.gov/70_SiteWideInfo/02_Tools/03_VerifyLicense.html

    I'd love to go through all your old posts and pull up the inconsistencies but it just not really worth my time. I'll guess the mods have better things to do than baby sit this post. I know who you are, others do too. Change your name again, what ever your fictitious boastful style will reveal who you are each time.

    I'm abrasive because I find it insulting when people are less than truthful.

    To the OP, I'm sorry I derailed your thread.
     

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