Results 1 to 8 of 8

California smog with long-tube headers?

This is a discussion on California smog with long-tube headers? within the External Engine forums, part of the LSx Technical Help Section category; I'm trying to get some more details on long-tube headers (for LS1 motors) and CA smog tests. It sounds like ...

  1. #1
    Torque Junky
    Join Date
    Mar 2006
    Location
    California
    Age
    35
    Posts
    63

    Blue on White & Dark Blue
    70 TA RA III & 02 TA WS6

    California smog with long-tube headers?

    I'm trying to get some more details on long-tube headers (for LS1 motors) and CA smog tests. It sounds like if you extend the wiring for the rear O2 sensors, the only issue would be visual inspection?

    Anyone have experience with this?

  2. #2
    Moderator Firebirdjones's Avatar
    Join Date
    May 2006
    Location
    Arizona
    Posts
    12,552
    California is one of the goofy states that don't allow you to move the cats from their original location, which puts long tubes out of the picture (cats are further down stream). Even though the car is still very capable of passing a sniffer test, it would fail the visual.

    That doesn't mean that someone knows someone that will let it slip by.

  3. #3
    She Moderator KahanaReef's Avatar
    Join Date
    Jul 2008
    Location
    So Cal
    Age
    54
    Posts
    15,591

    Arctic White
    2000 Camaro Z28

    Shorty headers are the only thing you can get by with legally.

  4. #4
    Torque Junky
    Join Date
    Mar 2006
    Location
    California
    Age
    35
    Posts
    63

    Blue on White & Dark Blue
    70 TA RA III & 02 TA WS6

    Finally got in touch with someone at a Bay Area shop that broke it down for me - you USED to be able to pass the sniff test and maybe get lucky on the visual, but no longer. Apparently 1-2 years ago, CA cut the amount of allowed emissions in half, making long tube headers fail the sniff test as well. The guy said the test is strict enough now that even unmodified cars are borderline.

    Oh well, I guess this is what the '70 is for...

  5. #5
    Moderator Firebirdjones's Avatar
    Join Date
    May 2006
    Location
    Arizona
    Posts
    12,552
    Quote Originally Posted by TransAMrit View Post
    Finally got in touch with someone at a Bay Area shop that broke it down for me - you USED to be able to pass the sniff test and maybe get lucky on the visual, but no longer. Apparently 1-2 years ago, CA cut the amount of allowed emissions in half, making long tube headers fail the sniff test as well. The guy said the test is strict enough now that even unmodified cars are borderline.

    Oh well, I guess this is what the '70 is for...
    Funny, I have a 70 ram air III formy that I bought in Cali years ago. I had to put that through smog there, passed fine but thought it was ignorant considering I was taking it out of state anyway.

    I'm guessing they aren't going back that far on testing now? Didn't they bump that up to 75 or there abouts?

  6. #6
    She Moderator KahanaReef's Avatar
    Join Date
    Jul 2008
    Location
    So Cal
    Age
    54
    Posts
    15,591

    Arctic White
    2000 Camaro Z28

    Quote Originally Posted by Firebirdjones View Post
    Funny, I have a 70 ram air III formy that I bought in Cali years ago. I had to put that through smog there, passed fine but thought it was ignorant considering I was taking it out of state anyway.

    I'm guessing they aren't going back that far on testing now? Didn't they bump that up to 75 or there abouts?
    Less than a year after I let my 69 Chevelle go I drove that car for almost 15 years. Actually, at one point, I had two of them (one stock). It had gotten impossible to smog it, not to mention, quite costly.

  7. #7
    Moderator Firebirdjones's Avatar
    Join Date
    May 2006
    Location
    Arizona
    Posts
    12,552
    Quote Originally Posted by KahanaReef View Post
    Less than a year after I let my 69 Chevelle go I drove that car for almost 15 years. Actually, at one point, I had two of them (one stock). It had gotten impossible to smog it, not to mention, quite costly.
    Ugh!! That stinks. Just think, now you could be driving it without smog testing. It's too bad California didn't realize sooner that the older cars aren't really an impact on smog, just not enough of them on the road to matter. I think it's a money thing.

  8. #8
    Torque Junky
    Join Date
    Mar 2006
    Location
    California
    Age
    35
    Posts
    63

    Blue on White & Dark Blue
    70 TA RA III & 02 TA WS6

    Quote Originally Posted by Firebirdjones View Post
    Funny, I have a 70 ram air III formy that I bought in Cali years ago. I had to put that through smog there, passed fine but thought it was ignorant considering I was taking it out of state anyway.

    I'm guessing they aren't going back that far on testing now? Didn't they bump that up to 75 or there abouts?
    Yeah, when I got the '70 back in 2000, pre-1973 was smog exempt in CA. It was supposed to up every X number of years, but they seem to have stopped it after it hit 1975. Met someone that bought a '76 Monte Carlo that wasn't passing smog, and was hoping to just not bother once the window was bumped up again - except it never happened, whoops!

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. BBK Long-Tube Headers Install - Going Long
    By Ed Blown Vert in forum Firebird / WS6
    Replies: 0
    Last Post: 09-09-2011, 07:30 PM
  2. FS: Dynatech Long Tube Headers, Smog Legal!!!
    By haighter in forum Western Members
    Replies: 12
    Last Post: 11-09-2007, 12:19 AM
  3. Replies: 2
    Last Post: 11-01-2006, 05:46 PM
  4. Long tube headers W/smog ports
    By JD_Z28 in forum Parts Wanted / Trade
    Replies: 0
    Last Post: 11-23-2005, 03:50 PM

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •