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  1. #1

    Default Smog legal headers?

    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. #2

    Smile 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. #3


    I had flowtech on my GMC and I believe they were 50 state legal
    95 GMC Sierra 2500
    3" Body Lift, 33" Goodyear MTR's
    5.7L 350 TBI Edelbrock SDT Exhaust, Flowtech Headers, K&N Intake
    Sold :(
    1999 Jeep Cherokee, 3" Rustys lift, 33" BFG MT's, locked, armored: Rolled :(
    2000 Jeep Grand Cherokee Limited. K&N Intake, Custom Kolak Exhaust

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  4. #4
    Jr. Mechanic thatjerk01's Avatar
    Join Date
    Feb 2009
    currently arizona soon to be idaho


    it has to be short tube headers and 50 state legal. short tubes dont usually relocate the o2 sensors.
    Casey Clark
    Currently Arizona
    Soon Idaho
    1996 CHEVY K1500 Z71
    Front end collision
    145000 miles about

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