Smog legal headers?

Discussion in 'General Chevy & GM Tech Questions' started by route66paul, Feb 14, 2009.

  1. route66paul

    route66paul Member

    Are there ANY smog legal headers for use in Calif? I have a 91 Suburban(the last year of that body style - suburbans changed in 92) with a 454. I had smog work done and it came back puffing of the left side. I am afraid that the manifold is cracked. If it is, I would be interested in calif legal headers. The can be a pia, and you need to have header bolt head clips(they keep them from turning) When i had my 69, I was forever changing out gaskets.
  2. silveradotrailblazer

    silveradotrailblazer Epic Member 5+ Years ROTM Winner 5000 Posts

    smog legal headers

    I believe JBA headers has headers for your Surburban. I used Stage 8 header bolts with my headers and with over 68,000miles on them no trouble.
  3. Pete95Sierra

    Pete95Sierra Epic Member 5+ Years ROTM Winner 1000 Posts

    I had flowtech on my GMC and I believe they were 50 state legal
  4. thatjerk01

    thatjerk01 Rockstar

    it has to be short tube headers and 50 state legal. short tubes dont usually relocate the o2 sensors.

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